英语必修二第一单元作文范文(33篇)
admin英语必修二第一单元作文范文 第1篇
Water is very important to us. If you don’t have water for three days, you will die. We can use water for flowers, swimming, washing and many different things. We use it to cook, make electricity, and put out fires and so on. We use millions of liters of water every day.
Do you know how does the water come to your home? It travels through water pipes. Some are long and wide but some are short and narrow. Then the water travels through the water pipes to the reservoirs. Then it travels through the water pipes to the river and to the special factories that purify the water. When the water is purified, we can drink it. Please don’t leave garbage in the water on which we line, and keep the water clean.
水对大家非常重要。假如没有水，不出三天，你就会死的。大家可以用水游泳，洗涤和做许多不一样的事情。大家用它做饭，发电，和扑灭火灾等。大家每天采用数百万公升的水。
你知道水是怎么样来到您的家吗?它穿越水管。有些是长而宽的，但有些是短而细的。然后通过水管到达水库。然后通过河流和专门用来净化水的工厂。当水净化后，大家可以喝它了。请不要丢垃圾到水中，由于水是自己的生命线，大家要维持水的干净。
英语必修二第一单元作文范文 第2篇
High school is a very important stage for every Chinese student, because they will study and fight for their future together. When the college entrance exam is over, it means the end of this stage. Some may go to college and some may choose to work. No matter what the choice they make, they need to be separated and begin the different chapter of life. My classmates decided to make a great appointment. We would meet in the school in twenty years. At that time, we could see the change of the school and talk about our school time. Though we would soon to be apart, we looked forward to the future meeting and wouldn’t feel sad. Thinking about the unknown future, we were excited and scared, but we believed that we could get over and became the better ones.
英语高一必修二第一单元作文
英语必修二第一单元作文范文 第3篇
Sustainable Development
The idea of sustainable development has been accepted by the world. How to keep sustainable development is a big problem facing our planet.
The present situation is worrying. First，natural resources are becoming less than before. Second，as some people are not aware of the importance of the environmental protection，the problems with it remain extremely serious to some degree. The gap between the rich and the poor has the tendency to become wider and wider.
To our great joy，many countries have taken action. On one hand，they have made relevant laws and regulations and put large amounts of money to the environmental protection. One the other hand，popularized education as well as international cooperation is being carried out.
As for myself，I should take the responsibility to devote myself to sustainable development，our future and the lives of our children and our grandchildren will be in danger.
英语必修二第一单元作文范文 第4篇
一、基础测试(每小题1分，满分20分)
A. 单词拼写
1. Something is wrong with the e__________ of the car. It can’t start.
2. Marie Curie was the discoverer of r_________.
3. According to the t________ of relativity (相对论), nothing can travel faster than light.
4. After all his mathematical calculations, Copernicus drew a c__________ that the earth was not the center of the solar system.
5. I__________ she’d gone, I remembered her name.
6. In the Anti-Japanese War, the Chinese ___________ (打败) the Japanese invaders.
7. Shall he ________ (参加) the meeting to be held tomorrow?
8. Work on the new railway will be ___________ (完成) at the end of next year.
9. Our new offices are still under ____________ (建设).
10. They have found some evidences that are __________ (联系) to this murder.
B. 句型转换
11. A: From the facts John Snow concluded that polluted water carried the disease.
B: From the facts John Snow ________ _______ _______ that polluted water carried the disease.
12. A: He determined to find out why.
B: He __________ his __________ to find out why.
13. A: We will begin the work immediately.
B: We will begin the work ______ _______.
14. A: How will you deal with these letters?
B: What will you _____ _______these letters?
15. A: The movements of the other planets in the sky made sense only if you put the sun there.
B: Only if you put the sun there _______the movements of the other planets in the sky _______ sense.
C. 完成句子
16. He suggested that the machine ________ ________ (检查) carefully before we used it.
17. She ______ _______ _______ (全神贯注于) reading, so she didn’t notice what was happening.
18. We ______ _______ (下决心) that this should never be allowed to happen again.
19. ______ _______ ________ (除…之外) Wang Hai, who will go there?
20. The teacher is popular with the students because he _______ ______ ______ ______ (对他们要求严格).
二、单项填空 (每小题1分，满分15分)
team was ahead during the first half, but we _____ in the last ten minutes.
A. were won B. were lost
C. were beaten D. won
22. Usually children are allowed to ___________ when they are six years old.
A. attend school
B. attend the school
C. join school
D. join the school
23. Professor Hawking stepped into the office I knew that there was no hope.
A. Unless B. Now that
C. Although D. The moment
24. His failure in the experiment suggested that he ________ his teacher’s proper instructions.
A. should not have followed
B. should not follow
C. mustn’t have followed
D. hadn’t followed
25. I suggested that he _____ telephone the manager before he decided.
A. telephoned B. would telephone
C. telephone D. had to telephone
26. —I'm terribly sorry that I failed to win the game.
—You are not ________ for all you could do.
A. to blame B. pleased
C. right D. satisfied
27. Yang Liwei was surrounded by the audience ________ he stepped off the stage.
A. until B. through
C. now that D. immediately
28. Gathering clouds the coming storm.
A. declared B. turned out
C. connected D. announced
29. Seeing their son playing computer games all day, the parents don’t know ______ it.
A. how to do
B. what to do
C. how to deal with
D. how to do with
30. — So hard ______ in the past few months that he has made great progress in English.
— I can see that; only a few mistakes ______ in the exam.
A. has he worked; did he make
B. he has worked; did he made
C. he has worked; he made
D. has he worked; he made
31. Enough of it! Nobody here thinks what you are saying should make any ________.
A. value B. sense
C. fun D. use
32. Only by shouting at the top of his voice .
A. he was able to make himself hear
B. he was able to make himself heard
C. was he able to make himself hear
D. was he able to make himself heard
33. Only after the second tower of the World Trade Centre did people know it was not an accident, but an attack of some kind.
A. had hit B. did fall
C. was hit D. was fallen
34. Last summer holiday, I went back to my hometown, ________ the neighbors and the house ________ I used to be familiar with were gone.
A. only finding; which
B. only to find; that
C. only to find; whom
D. found; that
35. It’s quite strange that the man sleeps with his mouth ____ and his eyes _____.
A. closing; open B. closed; opened
C. closing; opening D. closed; open
三、完形填空 (每小题1分，满分20分)
阅读下面短文，掌握大意，然后从36-55各题所给的四个选项(A、B、C和D)中，选出最佳答案。
A person may have an idea about himself that will prevent him from doing good work.
He may have the 36 that he is not capable (有能力的) of it. A child may think he is stupid because he does not understand how to make the 37 of his mental faculties(官能). Older people may be mistaken that they are incapable of 38 anything new because of their age.
A person who believes that he is incapable will not make a real 39 , because he feels that it 40 be useless. He won’t go at a job with the confidence(信心) necessary for success, and he won’t work his hardest, even though he may 41 he is doing so. He is 42 likely to fail, and the failure will 43 his belief in his incompetence(无能).
Alfred Adler, a famous doctor, had 44 like this. When he was a small boy, he had a poor 45 in maths. His teacher told his 46 he had no ability in maths in order that they would not 47 too much of him. In this way, they too 48 the idea. He accepted 49 mistaken thinking of his ability, felt that it was useless to 50 , and was very poor at maths, 51 as they expected.
One day he worked out a problem which 52 of the other students had been able to solve.
Adler succeeded in solving the problem. This gave him confidence. He now 53 with interest, determination and purpose, and he soon became especially good at 54 . He not only proved that he could learn maths well, but luckily he learned early in his life from his own experience that if a person goes at a job with determination and purpose, he may 55 himself as well as others by his ability.
36. A. belief B. way
C. fact D. condition
37. A. biggest B. most
C. higher D. deepest
38. A. teaching B. learning
C. accepting D. using
39. A. decision B. success
C. effort D. trouble
40. A. would B. should
C. must D. could
41. A. forget B. think
C. guess D. understand
42. A. truly B. really
C. however D. therefore
43. A. lead to B. strengthen
C. increase D. add to
44. A. an experience B. an expert
C. a thought D. a story
45. A. state B. mind
C. start D. ending
46. A. classmates B. friends
C. neighbours D. parents
47. A. blame B. expect
C. get D. win
48. A. developed B. organized
C. discovered D. found
49. A. a B. one
C. its D. the
50. A. manage B. succeed
C. try D. act
51. A. only B. almost
C. just D. then
52. A. none B. all
C. many D. most
53. A. lived B. worked
C. played D. graduated
54. A. lesson B. medicine
C. subjects D. maths
55. A. encourage B. love
C. astonish D. disappoint
四、阅读理解 (每小题分，满分30分)
阅读下列短文，从每题所给的四个选项(A、B、C或D)中，选出最佳选项
Albert Einstein was probably the most famous scientist of the twentieth century. He changed scientific thinking in the modern world. He is generally considered as the greatest physicist who ever lived. What’s more, he devoted a lot of his time and energy to working for human rights and progress.
In 1933, while Einstein was visiting England and the United States, the Nazi government of Germany took all his things away, including his position and his citizenship. Einstein then settled down in the United States. In 1939, Einstein, who loved peace—afraid of a world in which only Hitler would had an atomic bomb(_)—tried hard to persuade President Franklin D. Roosevelt in a famous letter to have the United States start uranium research. That Germany, after all, had no bomb, and that the first bomb would fall on Japan, could not have been expected. After the war, Einstein never stopped working for peace and reducing the number of soldiers in the world.
Although he wasn’t connected with any accepted religion(宗教), Einstein felt that trust in a personal God was too special an idea to be suitable to the God at work in this universe, but he never believed that the universe was one of chance or disorder. The universe to him was one of pure law and order. He once said, “God may know everything, but he is not hateful.”
56. From the passage we know that .
A. no scientist is as great as Albert Einstein during this century
B. Albert Einstein was likely to be the greatest scientist of his time
C. Albert Einstein made the first atomic bomb for the United States of America
D. Albert Einstein gave up his German citizenship for political reasons
57. If Einstein had known that Hitler had no atomic bomb and that the first atomic bomb would fall on Japan, he would .
A. have continued his scientific research
B. have won another Nobel Prize for physics
C. not have advised starting uranium research in the U. S. A.
D. not have moved to the U. S. A.
58. Einstein in 1933.
A. visited England and the U. S. A.
B. lost everything
C. became a man without a country
D. both A and C
59. Einstein believed that everything in the universe .
A. was kept in order by its own law
B. had nothing to do with each other
C. happened in an irregular way
D. was made by the personal God
“That’s funny! These fellows in the middle of the plate have died.” Dr Alexander Fleming was talking to another doctor in a laboratory in London. He had been studying some germs(细菌)that he was growing on a plate. They were very dangerous germs because they caused different kinds of illnesses that could kill people. Dr Fleming found that a mould(霉菌)had floated in through the window landing on the plate. It had killed some of the germs it had touched.
“This certainly looks promising.” Fleming said. “We must grow some of this mould to see if it will kill other germs.”
He named the strange mould “penicillin”. It proved to be a killer of many germs. Fifty mice were given deadly germs and then half of them were injected(注射)with penicillin. The twenty-five untreated mice died, but twenty-four of those lived that had been treated with penicillin. Dr Fleming wrote a report about what he had found out. Hardly anybody took any notice of it.
In 1938 Dr Howard Florey, an Australian working in London, read Dr Fleming’s report and was very interested. He found that penicillin was effective in treating blood poisoning in human beings.
When World War II broke out, it was not possible to make enough penicillin in England. Dr Florey went to America where he helped to have enormous amounts of this wonderful drug made. It saved the lives of thousands of soldiers, sailors and airmen who would have died from their wounds if the hospitals had not had penicillin.
60. Dr Alexander Fleming .
A. had been studying a mould which was very dangerous and could kill people
B. had been studying some of the germs on a plate which could cure illnesses
C. had been making experiments on some germs that he was growing on a plate
D. had been making experiments on different germs that could help sick people to get better
61. Some of the germs on the plate .
A. had been killed by a mould floating in through the window
B. had been killing one another, which was a surprise to Fleming
C. had been killed by a mould that had been grown by Dr Alexander Fleming
D. had been killed by a mould found by another doctor
62. The reason why the twenty-five mice died was that .
A. they had been given deadly germs and had been injected with penicillin
B. they were almost dead ahead of the experiment
C. they were easy to die in the experiment
D. they had been given deadly germs and had not been injected with penicillin
63. In 1938, an Australian working in London named Howard Florey read Dr Fleming’s report and .
A. left England for America, making the drug
B. went to America to save the lives of thousands of soldiers, sailors and airmen
C. found penicillin effective in treating blood poisoning in human beings
D. went to America to make this drug for mice
64. The word “enormous” means .
A. 剩余的 B. 恰当的
C. 少许的 D. 巨大的
Einstein, a great scientist of the age, was almost as strange as his Theory of Relativity.
Once, while riding a street car in Berlin, he told the conductor that he had not given him the right change. The conductor counted the change again and found it to be correct, so he handed it to Einstein, saying, “The trouble with you is that you don’t know your figures.”
Einstein said that there were only twelve people living who understood his Theory of Relativity although a good many books had been written to explain it.
He had nothing but contempt(藐视)for the things most people set their hearts on—for fame and riches(财富)and luxury(奢华).
He didn’t want money or praise. He made his own happiness out of such simple things as his work and playing the violin and sailing his boat. Einstein’s violin brought him more joy than anything else in life. He said that he often thought in music.
65. The conductor thought Einstein .
A. wasn’t good at maths
B. had good memory
C. was either mad or strange
D. liked to make trouble
66. Einstein meant that many people .
A. knew his Theory of Relativity well because they could explain it
B. had written to have grasped his theory correctly
C. pretended to have grasped his abstract theory
D. admired him very much
67. The underlined part “set…hearts on” means .
A. believe B. have
C. love D. hate
Louis Pasteur, the famous French chemist and bacteriologist, invented “pasteurization”. In 1854 Pasteur was made head of the department of science at the University of Lille, and it was there that he made one of his most famous discoveries. Lille was a major center for wine and beer-making, and some of the local wine-makers asked Pasteur if he could help solve the problem of keeping wine fresh. At that time, it was believed that food and drinks go “bad” due to a purely chemical process (变化过程). But during a series of experiments Pasteur proved that tiny living organisms (微生物) caused food and drinks to go bad. In the case of wine and beer the organisms are already present in the form of the various yeasts (酵母) that caused the fermentation (发酵) process. Pasteur discovered that heating the wine gently for a few minutes after it had fermented would kill off the yeast that was left in the wine, with the result that the wine would remain fresh for much longer. He also proved that food and drinks could be turned bad by other organisms that were present in the air, and that they too would keep fresh much longer if they were kept in airtight containers.
The heating process was so successful that it made Pasteur famous. It was named “pasteurization” in his honour, and by about 1900 it had been widely used for processing and bottling cows’ milk. The result was a huge drop in the number of bottle-fed babies dying from infant diarrhea (婴儿腹泻) and from that time on it has been a standard treatment for milk and many other food products. This simple process has saved thousands, possibly millions, of lives worldwide.
68. Pasteur became in 1854.
A. the chairperson of the science department at the University of Lille
B. the director of a chemical laboratory at the University of Lille
C. the general manager of a large beer-making company
D. the president of the University of Lille
69. According to the passage, Lille was a major center for in the mid-19th century.
A. growing grain crops
B. making beer and wine
C. doing chemical research
D. producing various kinds of yeasts
70. In the last sentence of paragraph 1, the underlined word “they” refers to .
A. wine and beer
B. food and drinks
C. the various yeasts
D. other organisms
71. We can infer from the passage that Pasteur’s discovery .
A. is no longer widely used for treating milk and other food produts
B. did not bring much profit to the wine makers in Lille
C. has done a lot of good to children in the world
D. has greatly reduced the number of wars in the world
On the first day of class, Mr Whiteson gave us a lecture about a creature(生物) called cattytiger, a kind of cat-like animal that completely disappeared during the Ice Age. He passed round a skull (头骨) as he talked, and we all felt interested and took notes while listening. Later, we had a test about that.
When he returned my paper, I was very, very surprised. There was a very large cross through each of my answers. And so it was with everyone else’s in our class. What had happened? Everyone was wondering and couldn’t wait to get the answer.
Very simple, Mr Whiteson explained. He had made up all that story about the cattytiger. There had never been such an animal. So why none of us noticed that and how could we expect good marks for the incorrect answers?
Needless to say, we got very angry. What kind of teacher was this?
We should have guessed it out, Mr Whiteson said. After all, at the very moment he was passing around the cattytiger skull (in fact, a cat’s), hadn’t he been telling us that it completely disappeared during the Ice Age? Clearly he was telling a lie. But we just kept busy making notes and none used his head. We should learn something from this. Teachers and textbooks are not always correct.
72. We failed in the test because we didn’t .
A. take notes while listening
B. show interest in what Mr Whiteson said
C. listen to the teacher carefully
D. think carefully
73. We got angry because .
A. Mr Whiteson didn’t tell us the truth about cattytiger
B. we failed in the test
C. we didn’t know why he played the joke on us
D. there was no cattytiger
74. Mr Whiteson gave us a special lesson .
A. to show his special way of teaching
B. to play a joke on us
C. to help us learn our lessons better
D. so that we would no longer believe him
75. Mr Whiteson meant that .
A. teachers couldn’t make any mistakes
B. textbooks might be wrong sometimes
C. we should speak up if we thought our teacher or the textbook was wrong
D. we shouldn’t believe our teachers because sometimes they might tell lies
五、书面表达 (满分15分)
随着人们生活水平的提高，越来越多的人拥有了自己的汽车，你班同学就此展开了一次讨论，提出两种不同的观点和看法。请你根据所提供的信息给报社写一封信，客观介绍这两种看法。
赞同者认为：
1.方便、快捷、舒适的交通工具;
2.反映出国民生活条件提高，国家富强;
3.带动其他行业发展。
反对者认为：
1.废气污染严重;
2.过多则影响交通，导致更多事故;
3.停车问题日益突出。
注意：1.信的开头已给出;
2.词数：100左右;
3.参考词汇：方便的 convenient;交通 transportation
Dear editor，
I'm writing to tell you about the discussion we recently had about whether it is good or not for families to own cars.
____________________________________
____________________________________
____________________________________
Yours truly,
Li Hua
英语必修二第一单元作文范文 第5篇
ur home,we are all live and study here. in order to make ourselves safe,as a student,we should obey the school rules,we should go to school on time and be never late . we must obey the traffic rulers, mustn’t go swimming shouldn’ t chase(追) each other in the hallway and in the school yard;we should get on well with others and should not fight with others;we should not eat the food that goes bad and some junk food;we do not drink;we mustn’t be allowed to smoke, must keep away from cigarettes/smoking/drugs ;when you have questions to ask .
you may ask the teachers for help.
especially,when you meet someone asks for money,you needn‘t be afraid .you report to the teacher or call 110/120 . we are required that students break away from these bad habits and be polite to others. we must obey the traffic rulers, mustn’t go swimming hope we have a good time everyday!
英语必修二第一单元作文范文 第6篇
hundreds of 数以百计，许多
hunger for 渴望
hunger up 赶快，迅速完成
in a hurry 急忙的，急于
if only 要是……多好
improve on 改进
for instance 例如
instead of 代替，而不是
at intervals 不时，时时
by oneself 独自，单身
in itself 本身
keep back 阻止，阻挡，隐瞒
keep down 控制，压制，镇压，压低
keep from 使……不做
keep off 不接近，避开
keep on 继续，保持
keep out of 躲开，置身之外
keep to 坚持，保持
keep up 保持，维持，坚持
keep up with 跟上
knock down 撞倒，击倒
knock out 击倒，击昏
known as 被认为是，被称为
at large 一般，大体上
at last 最终，终于
lay aside 把……搁置一边
lay down 放下，制定
lay off 解雇
lay out 安排，布置，陈列，展示
at least 至于，最低限度
in the least 一点，丝毫
leave behind 留下，忘了带
leave out 遗漏，略去
at leisure 从容的，有空
at length 最后;详细地
no less than 不少于，不亚于，和……一样
let down 放下，降低;使失望
let go 放开，松手
let in 让……进去，放……近来
let off 放(炮，烟火);开枪;免除
let out 放掉，发出
lie in 在于
英语必修二第一单元作文范文 第7篇
Ladies and gentlemen，
It's my honor to stand here and say something about friendship.
First, I think everyone needs friends and is eager to get you are happy, you can share your happiness with your friends and when you are sad, you can complain to your you are arrogant, your friends can persuade you and they can make you confident and brave when you are discouraged.
Second, as we all know, friendship is can touch your heart and give you people are proud of having a good must cherish our friends when we are happy with our should try our best to protect the friendship from being hurt.
We will meet a lot of friends in our should find the people who can understand us and share not only happiness but also you lose it, both you and your friend will feel very you can't give up those friends, please don't forget to keep in touch with your old friends, because staying with old friends is cherishable.
Finally, just as an old saying goes, love comes and goes but friendship 's sweet and poetic, full of tears, hopes and let's cherish friendship!
That's you for listening.
英语必修二第一单元作文范文 第8篇
高一必修二英语第一单元作文
There is something in the world. It has no shape, no color and no weight. It can’t be seen or touched. But everyone wants it very much. People try to get it in many ways. Some people think money means it, so they try to make more money; some people believe that knowledge can bring it to them, so they study very hard; some other people find only good health can make themselves get it, so they take part in all kinds of sports and games. Now, you may ask what on earth the mysterious thing is. That’s happiness.
From my point of view, being in a good mood anytime and anywhere is the first thing for those who want to be happy. There is an old saying going like this, “happy is he who is content.” I cant agree with it any more. I still remember a story my mother told me when I was a child. A millionaire tried every means to seek after pleasure but to feel unhappy, but its counterpart that poor men who dose not have a thing always feel happy. Why are they so different? The answer is that the rich is being thinking how he can gain more while the poor is satisfied with what he owns at hand-health, freedom, love and so on.
Furthermore, love makes great difference to happiness. If you have love in your heart, you will have happiness in your life. Love consists of two parts, one is to love others, and the other is to be loved by others. Lei Feng set a good example for all of us. He served the people wholeheartedly until the last minute of his life. He regarded serving the people as the happiest thing. There are numbers of similar inspirational stories to be found. In addition, being loved by others can also lead you to happiness. Courage from your parents when frustrated, care from your lover when ill, help from your friends when in trouble… all of these will make you the happiest person in the world.
The last but not least is to act happily. Putting on a happy face and thinking interesting things are helpful to trigger happy feelings.
But I’m sad to see some people getting their happiness in bad ways. They speak loudly in cinemas and meeting rooms; they destroy trees to enjoy themselves and they laugh at others’ shortcomings. Perhaps they feel happy at that time, but they will never get true happiness because they have destroyed others’ happiness.
From I have discussed above ,we may safely draw the conclusion that happiness means kindness, love and unselfishness. Above all, only bringing happiness to otherms can make yourself happy.
英语必修二第一单元作文范文 第9篇
3.语法
直接引语变为间接引语(注意：变化时句子一定为陈述句语序。)
人称的变化
①直接引语中主语第一人称或者被第一人称所修饰，人称要与“讲话人”的人称一致。
②直接引语的第二人称，或者被第二人称所修饰，人称要与“听话人”的人称一致。
③直接引语中的第三人称不变化。
“一随主，二随宾，第三人称不更改”。
二、时态的变化
直接引语——间接引语
一般现在时——一般过去时
一般过去时——过去完成时
现在进行时——过去进行时
现在完成时——过去完成时
过去完成时——过去完成时
一般将来时——过去将来时
时态不变化的情况：
①直接引语是客观真理。
②直接引语是过去进行时，时态不变。
③直接引语中有具体的过去某年、某月、某日作状语，变为间接引语时，时态不变。
④直接引语如果是一般现在时。表示一种反复出现或习惯性的动作，变间接引语，时态不变。⑤如果直接引语中的情态动词没有过去时的形式(例：ought to， had better, used to)和已经是过去时的形式时，(例：could, should, would, might)不再变。
英语必修二第一单元作文范文 第10篇
How is everything going! Last time you said you are anxious now because you find it hard to learn English well. Don’t worry. I think you have to improve your English step by step. And I will right behind you. In my view, you should develop you interest on English first. According to my experience, I think watching English movie, listen to some wonderful English songs and talk in English on the Internet would be helpful. Secondly, you have to prepare lessons before class that will help you understand what the teacher says in the class.
I know you feel bored in the class, but you have force yourself to be concentrated. A few days later you will feel it a little easy to learn English. The left steps I will tell next time. By the way, we have not seen each other since your family move to Hunan a year ago. Have you ever thought about going back to visit me and learn English together in the coming Summer vacation. Looking forward to your reply.
英语必修二第一单元作文范文 第11篇
高一必修二第一单元英语作文
Most people haven’t formed the habit of and mitted themselves to waste sorting now in China. They would throw their domestic garbage - kitchen refuse, abandoned plastics and papers,broken china and glass, etc. - all into the same public containers, without thinking whether they are recyclable or not.
This, obviously, will reduce the value of stuff that can be recycled or reused, such as plastics and papers. Besides,the growing amount of garbage makes the building of more landfills necessary, which will worsen the shortage of land. Worse still,disposing of the recyclable waste like plastics by burning will give off toxic smoke which seriously pollutes the air. ID this sense, throwing the trash unsorted should not be advocated, no matter from the perspective of economy or protecting the environment.
On the contrary, if we sort out recyclable waste before throwing them away, the amount of trash will be reduced sharply. Accordingly, the cost of running landfills and treating waste will be brought down greatly. Whafs more important, less waste will have to be burned or buried, meaning resources waste and pollution will be reduced. Therefore, economically and environmentally, it is of great significance to call for waste sorting.
英语必修二第一单元作文范文 第12篇
Dear Mr. Cousins,
Since you are a well-known musician, I’m writing this e-mail to ask you for some advice on how to form a band.
I, together with two boys and two girls in different classes in our school, want to form a band. We are all fond of pop music and modern dance. I’d like to know whether we should play one kind of music or different styles to start with. And is it enough to practise only at weekends? How can we get more chances to perform?
We’d appreciate it if you would come up with a name for our band. Looking forward to your reply. Best wishes!
Yours sincerely,
Li Hua
英语必修二第一单元作文范文 第13篇
In recent years, the forests have been getting smaller and smaller for more and more people cut down trees for money. As trees grow naturally, people dont need to invest anything on them. But cutting down trees has destroyed our nature. We have already seen the bad consequence. For example, we always suffer from the flood and drought disaster; many animals are facing the danger of dying out, because their habitats have been destroyed; deserts are expanding, and sandstorms are emerging.
Our environment has been changed from bad to worse due to the reduction of forests. Thus, the government should appeal people that cutting down trees breaks the balance of our nature. Those who continue to cut down trees should be punished severely.
英语必修二第一单元作文范文 第14篇
Every student is excited about the freshmen year, they are looking forward to seeing their classmates and will open the new chapter of their lives. While when the senior year comes, it means saying goodbye to their classmates and is it time to leave school. Freshmen year brings happiness and senior year brings sorrow, students don’t want to say goodbye to their classmates, after the long time’s acquaintance, classmates have built strong friendship, it is hard to say goodbye. In China, there is an old saying that all good things must come to an end, for every student, they will leave school and fight for each other’s future.
Though senior year is a little sad, it is another turning point for the students, they some will find a job, some will study abroad, all of them are fighting for their future. Senior year in not the end, it is the beginning.
英语必修二第一单元作文范文 第15篇
Every year the Spring Festival I want to go home and family reunions. My parents and I live together, at ordinary times home from far away, can only back to a few times a year. I really miss my grandma, grandpa, grandma, aunt and so on a lot of relatives. I want to talk with them, and often, they report their learning situation.
I want to have witnessed great changes of home. A few days ago to listen to my grandfather called and said, the village on the tarmac, families float on the water, a lot of farm built buildings, liking the closed-circuit television (CCTV), install the telephone, use of mobile phones, washing machines, motorcycles and other modern products, a lot of the past can't buy vegetables, now can be purchased at any time. I think a walk on the asphalt road in the village, to the families to have a look, a glass of tap water taste, feel the new rural construction brings to the farmers' benefits and convenience.
I also feel the hometown the lively atmosphere of the Spring Festival. Spring Festival can be noisy in the countryside. Families at the gate will be labeled as festival couplet, set off firecrackers everywhere, the wonderful sound jan made people stop to watch the show. I want to appreciate the desire for happiness from door to door couplet, set off firecrackers with my father and mother, take a look at jan.
While every year the Spring Festival is roughly same, but as the are of the age, I also can feel more and more, from the children are eager to go home! I believe that the 20__ Spring Festival will bring me much happiness.
英语必修二第一单元作文范文 第16篇
坚持不懈使乌龟在赛跑中胜过了兔子;坚韧不屈使荷花在淤泥中绽放出笑脸;持之以恒使铁杵在磨砺中变成了细针。坚持创造了一个又一个生命中的奇迹。坚持铺成了成功之路，这样的坚持怎能不可贵呢?
初中生涯的最后一次运动会即将来临，为了给它添上一个完美的句号。我在心中暗暗下定了要去努力练习八百的的决心。
第一天晚上我兴致勃勃地来到院子里，在月光的指引下我奔跑在黑夜中。那凉飕飕的风扫过我的脸颊，那冰冷的空气被吸入我的鼻腔和喉咙。它就像一把刀刺得我的喉咙生疼生疼的。可又不得不大口大口地吸入空气来平缓那缺氧的感觉。随着圈数的增加我开始觉得我摆动的的双臂和奔跑的双腿已经几乎要麻木了,犹如踩在云端上用不上一点力。终于跨过了终点线，在那一刻我的最后一丝力气好像也被抽空，我呆呆地站在原地大口大口地呼吸着空气。
第二天的夜晚来临了，我站在窗边可我脑海里挥之不去的是昨天那吸入冷风时喉咙的刺痛感以及跑完时那几近窒息的感觉，心中不禁打起了退堂鼓。母亲不知何时站在我身后，紧紧地盯着我，洞察了我的全部心思。母亲示意我抬头看那夜空中的明月。月亮被乌云给遮盖住了，只透出几丝淡淡的光。我不解地望向母亲，母亲让我继续耐心地观察。只见那月亮的光辉变得越来越亮，就在月亮快要从乌云中露出来时，又有一朵乌云飘了过来将月亮的光辉完全挡住了。并且还挡得严严实实，夜空变得黯淡无光。我惋惜地叹了口气。
就在这时，黑暗开始渐渐变淡，黑暗终被光明代替。母亲终于开口了：“月亮坚持穿过那黑暗的云层为的是将那光亮洒向每一个黑暗的角落。所以只有坚持才能迎来象征着希望的光明。这样的坚持是最难能可贵的。”
再次看向天空中那散发着光芒的明月，我毅然地迈出了家门去院子中跑步。月亮的光洒满了整个院子，踏着坚定的步子在风中奔跑着。那无力感又随着我的奔跑而袭来，腿也开始麻木，但是有一个信念告诉我要坚持。我攥紧了手，要紧了牙根，继续向前，不畏寒冷的风，不畏漆黑的夜。周而复始，日复一日。
英语必修二第一单元作文范文 第17篇
高一必修二英语关于第一单元作文
Fun is what we experience during an act, happiness is what we experience after an act. The latter is a deeper, more abiding emotion. Watching a movie or television is fun activities that help us relax, temporarily forget our problems and even laugh. But they do not bring happiness, because their positive effects end when the fun ends.
The way people cling to the belief that a fun-filled, painfree life equals happiness actually diminishes their chances of ever attaining real happiness. If fun and pleasure are equated with happiness, then pain must be equated with unhappiness, but in fact, the opposite is tree. More often than not, things that lead to happiness involves some pain. It seems no fun undertaking some hard work, but when you finish it successfully, you will feel happy.
The moment we understand that fun does not necessarily bring happiness, we began to lead our lives differently. We should not merely seek fun in life, but try to pursue happiness even if we may undergo pains and difficulties.
英语必修二第一单元作文范文 第18篇
My Little Cousin
My little cousin is only ten, but he knows more than any students in his grade.
He likes computer games and he is crazy about music. When he is free, he always listens to music. He likes many kinds of music, like country music, pop music, jazz and classical music.
He hates noise, when it is very noisy, he will be very angry and shout until people become quiet. So of course, he doesn’t like public places.
One day, I went shopping with him. On our way we saw a beggar. He thought the beggar was a drunk, and he wanted to tell him not to drink too much wine. But I told him that he was a beggar, he is very poor. To my surprise, he came in front of the beggar and gave him $5. Isn’t he kind?
He is like his father. They are both very kind and friendly, and a little funny. They both have big eyes and little mouth.
Although he is ten, his room is full of toy planes and toy buses.
This is my little cousin. Is he lovely?
英语必修二第一单元作文范文 第19篇
Military Training
When September comes, it is the time for students to go to school, for the freshmen, they need to join the military training at the beginning of the semester. It will be a hard time for them, because they are princes and princess at home, now they need to be burned in the hot sun, how terrible it is. But the military training is good for the new students, they will learn to be a strong person, they have to bear the hot sun, listen to the order. Comparing at home, most students will give orders to their parents, they are spoiled by their parents. But when they come to the school, they need to live alone, so they must learn to get along with others.
When they meet troubles, sometimes they need to get over them, military training teaches students to be a strong person, no matter what difficulty they have met.
英语必修二第一单元作文范文 第20篇
Enough sleep is very important. It affects we are happy or not. We can easily find if we sleep enough in the night, we usually have a good mood next day. But, if we do not have enough sleep, sometimes we will feel depressed without a reason. What’s more, sleep also affects our study or work.
Try to imagine that a sleepy person how can he listen to the teacher in class or work in their position. It must be a hard job or in low efficiency. Thus, if a person sleep enough, he can do better in their life. In addition, do you find that a person with good sleep usual do not have acne, because enough sleep balance their internal secretion and detox. Knowing the importance of enough sleep, do you
英语必修二第一单元作文范文 第21篇
The movie Harry Portter is favored by the people all around the world and the novels are read by fans. Though the movie has ended, the three main protagonists are remembered all the time. Emma Watson is one of the main protagonists. She plays the role very well and she never gives up her study, which sets the great example to the young people. After the end of the movie, Emma goes to the top university, though she continues her acting career, she still focuses on her study.
When she graduates, she works on promoting the equality between men and women. She becomes the spokesman of feminism and she gives the inspiring speech He For Her. Everybody gives high praise to this girl. She’s grown up and becomes a strong woman. Her speech is supported by the public.
英语必修二第一单元作文范文 第22篇
高一英语必修一第一单元说课稿
大家好！今天我说课的内容是高一英语新课程实验教科书必修1 Unit One， The first perid。下面我就从教材分析、教法分析、学法分析、教学过程、教学评价五个方面进行说明。
一、教材分析
（一）教材的地位和作用
本节课是本单元以及本教材的第一节课，本课谈论的是：朋友是不是仅限于人类、朋友的真正含义、如何与人相处的问题等关于朋友的话题。本课涉及的有陈述句和疑问句的直接引语和间接引语的掌握和运用等语法要点。学生从初中到高中，来到一个新的学校，同学彼此陌生，不免想起老同学，老朋友。这样的话题正好能引起学生的兴趣。而且本课的内容和语法的启发性和实用性都很强，能使学生在学中用，在用中学，对综合提高学生的听说读写能力有较好的促进作用。
（二）教学目标
英语教学大纲规定，通过听说读写的训练，使学生获得英语基础知识和运用英语的能力，激发学生的学习兴趣，为进一步学习打下良好的基础。因此，我制定以下教学目标：
知识目标：1、掌握和使用陈述句和疑问句的直接引语和间接引语。
2、讨论朋友和友谊。
3、学习掌握本课的重点词汇。
技能目标：1、学会阅读的技能——scanningand siing 。
2、通过谈论朋友和友谊，既锻炼学生的语言运用能力，又培养了学生发现问题、思考问题、解决问题的能力。
3、理解阅读文段，复述故事。
情感态度：1、患难之交才是真朋友。
2、知音难得。
3、海内存知己，天涯若比邻。
文化意识：认识德国_党。让学生了解那段德国_残害犹太人的历史，使学生在感受外国历史文化的同时自然而然的习得语言。
（三）重点与难点
重点：1、训练scanningand siing等阅读技能。
2、认识朋友的真正含义以及与人相处的问题。
难点：1、阅读技能的训练。
2、陈述句和疑问句的直接引语和间接引语的互相转换(人称的变化、时态的变化、指示代词、时间状语、地点状语和动词的变化)。
（四）教具
本课利用录音机、投影仪等辅助设备，激发学生的学习兴趣，调动他们的积极性，为展开话题提供丰富的材料，使教学收到事半功倍的效果。
二、教法分析
英语必修二第一单元作文范文 第23篇
At present, the National development and Reform mission conducted a massive online poll. The May Day Golden Week will be cut from three days to one day.
I think it is a wise decision. I’m for it because it will have a good influence on the the May Day Golden Week has been cut, three traditional festivals have bee national holiday, which will promote the understanding of the traditional culture. As is known to all, nowadays teeagers are crazy about other countries’ festivals rather than ours. So it is necessary to change their ideas and develop our rich traditional ’s more, the new regulation also help reduce heavy pressure of the places of , it will produce more chances for people to get together, sharing their happiness.
Altogether,it will help us achieve the goal of harmony society. We are looking forward to it.
英语必修二第一单元作文范文 第24篇
“Do you feel disadvantaged?” is a question of a survey recently conductedon the Internet by a website.
About the officials in governments consider themselves as thedisadvantaged group, so do of the intellectuals, and 57% of thewhite-collars . In total, of the netizens have a “yes” response.
How can we remove the feeling of the disadvantaged? Views vary from personto person. 49% of the netizens questioned think we should make all peoplerich20% suggest that we should let everyone have a stronger sense of 10% advise making everyone have the right to choose the jobs which theylike, and the obstacles in society must be removed. The rest propose thateveryone should enjoy equal rights. And all people should be equal.
I think we should try our best to remove the negative factors in the dailylife and keep an optimistic psychology to face everything. In my opinion, themost important is the social harmony.
英语必修二第一单元作文范文 第25篇
教学准备
教学目标
■To help students learn to express attitudes, agreement & disagreement and certainty
■To help students learn to read the text and learn to write diaries in English
■To help students better understand “friendship”
■To help students learn to understand and use some important words and expressions
■To help students identify examples of Direct Speech & Indirect Speech (I): statements and questions in the text
教学重难点
Words
upset, ignore, calm, concern, settle, suffer, recover, pack
Expressions
add up, calm down, have got to, be concerned about, go through, set down, a series of, on purpose, in order to, at dusk, face to facer, no longer/ not …any longer, suffer from, get/ be tired of, pack (sth.) up, get along with, fall in love, join in
Patterns
“I don’t want to set down a series of facts in a diary as most people do,” said Anne. →Anne said that she didn’t want to set down a series of facts in a diary as most people do.
I stayed awake on purpose until half past eleven…
…it was the first time in a year and a half that I’d seen the night face to face…
教学工具
ppt
教学过程
Hello, everyone. I’m so glad to be your teacher of English. I’d like to make friends with you, to build up a close friendship with you. Today we shall take Unit 1. The topic of this unit is Friendship. What do you think friendship is?
1. Warming up
⑴ Warming up by defining friendship
Hello, everyone. I’m so glad to be your teacher of English. I’d like to make friends with you, to build up a close friendship with you. Today we shall take Unit 1. The topic of this unit is Friendship. What do you think friendship is?
Yeah, there are many explanations about friendship. However, friendship is a relationship that can’t be restricted(限制)by definition(定义). It can only be experienced. True friendship can exist between any two souls, be it between people or animals. It can happen at any moment, to anyone. Even to lifeless things, like a diary, a ball, a friendship can happen.
Then what is your opinion about friendship?
Do you think that friendship is important to our life? Why?
⑵Warming up by learning to solve problems
Nice to meet you, class. We shall be friends from now on. For everybody needs friends. But being a good friend can sometimes be hard work. Learning how to solve problems in a friendship can make you a better friend and a happier person. Discuss the situation below and try to solve the problems wisely.
Common problems among teenagers
Solution
Some of the common problems include forgetting friends’ birthday, not keeping promises, letting out friends’ secrets and so on.
Maybe we can have a heart-to-heart talk with our friends to ask for forgiveness.
Situation 1: Friends get angry with each other when they try to talk about something difficult.
Try to understand your friend/ Try to talk about the problem in a different way.
Situation 2: Friends don’t know how to apologize
Start by telling each other that you are sorry. A simple apology is often enough and is a good starting point.
Situation 3: Some friends don’t know how to keep secrets.
Keep your secrets to yourself
Tips on being a good friend
Treat your friends the way you want to be treated. Keep secrets that are told to you.
Pay attention when your friend is talking. Keep your promises. Share things with your friend. Tell your friend the truth. Stick up for your friend.
⑶Warming up by doing a survey
Good morning, class. I am your teacher of English. Glad to be here with you. Today we shall take Unit 1 Friendship.
To be frankly, I’d like very much to keep a close friendship with you, my dear students, in the following years. How about you then? Ok, thanks. I do hope to be your good teacher as well as your helpful friend (良师益友).
Now please do the survey on page one.
Add up your score according to the scoring sheet on page 8. You don’t have to tell your results. You can just keep it a secret.
高一英语必修一第五单元教案
英语必修二第一单元作文范文 第26篇
一、教学目标
知识目标
1. Get students to learn some useful new words and expressions in this part.
2. Get students to read the play.
3. Let students learn the expressions of ordering food.
能力目标
1. Develop students’ reading skills and enable them to learn how to use different reading strategies to read different reading materials.
2. Enable students to understand and act out the play.
3. Have students learn how to use the expressions to order food.
情感目标
1. Stimulate students’ interests of learning English by reading and acting this play.
2. Develop students’ sense of group cooperation and teamwork.
二、教学重点
1. Develop students’ reading and speaking skills.
2. Let students read and act the play.
3. Have students learn to use the expressions to order food.
三、教学难点
1. Enable students to learn to use reading strategies such as skimming, scanning, and so on.
2. Get students to act the play.
3. Have students make a dialogue at the restaurant.
教学过程
→Step 1 Revision
1. Check the homework exercises.
2. Ask two students to retell the content of Act I, Scene their own words.
→Step 2 Warming up
We have learned that Henry got a letter from the two old brothers ,so please predict what will happen next.
→Step 3 Reading
1. Read the play fast to understand the gist and decide whether the following statements are true or false.
1)The owner looked down upon Henry when he noticed Henry’s appearance.
2)Henry asked for more of the same food because he is an American who like to eat a lot.
3)When Henry saw the million pound bank note, he was happy and proud of it.
4)The owner didn’t believe that the bank note was real and he asked Henry to get out of the restaurant.
2. Read the play carefully and do the following:
1)Answer these questions in small groups.
(1)Whose behavior changes the most during this scene? Give examples.
(2)What kind of person is the owner of the restaurant?
(3)Why do you think the owner of the restaurant gave Henry a free meal?
2)Pay much attention to the different attitudes towards Henry.
Before Henry shows his million pound bank note:
Owner Hostess Waiter
That one’s reserved.
Well, we will have to take a chance.
. . . if you pay the bill. . . My goodness! He eats like a wolf.
It’ll cost a tiny bit.
Again, everything?
What’s there to wait for?
After Henry shows his million pound bank note:
Owner Hostess Waiter
I’m so sorry, sir, so sorry.
Oh, please, don’t worry, sir. Doesn’t matter at all.
Just having you sit here is a great honor! . . . bow. . . Screams
And you put him in the back of the restaurant!
bow
. . . bow. . .
3. Retell the story:
With the envelope in hand, Henry decided to enter a restaurant for a meal. He ordered some ham and eggs and a nice big steak together with a tall glass of beer. The waiter told him the meal would cost him a tiny bit. After eating his first order, Henry asked for more of the same.
When Henry opened the letter, he found it was a million pound bank note. He was surprised but the owner and the waiter were shocked. The owner was not sure if it was genuine or fake. They couldn’t believe Henry who was in rags could be so rich. At last, the note was proved to be real.
After knowing that the bill is genuine, the owner thanked Henry again and again for his coming to his little eating place and even asked Henry to forget the bill . The owner, hostess and waiter all bowed together as Henry left.
→Step 4 Language points
n.要(叫)的菜eg. May I take your order?
n.顺序，次序eg. The books are arranged in order of size.
n.命令eg. Soldiers must obey orders
v.命令eg. The officer ordered his soldiers to march
v.预定，预购eg. I have ordered a steak.
a chance碰运气
Eg. As for whether he will win the game or not ,we must take a chance .
Maybe true love is a decision, a decision to take a chance with somebody.
也许真爱只是一个决定，一个与某个人一起冒险的决定。
3. genuine adj 1)真正的，真实的，名副其实的;非人造的，非伪造的
Eg. Her wedding ring is made of genuine diamond.
她的结婚戒指是真正的钻石做得。
2)真诚的，真心的，诚实的
My genuine friend is not such right?
我真正的朋友不是这样的对吗?
3. Well, I did hear that the Bank of England had issued two notes in this amount. . . Anyway, I don’t think it can be a fake.
我确实听说英格兰银行发行了两张这样面值的钞票……不管怎样,我觉得这不可能是_。
助动词do或其他形式does, did在肯定句中用于谓语动词前,表示强调。例如:
I did tell him what I thought of.
我的确告诉过他我的想法。
can表示推测,与主句中的not结合在一起,表示“不可能”。例如:
It can’t be Jim. I know him too well.
不可能是吉姆,我太了解他了。
5. But he’s in rags!但是他穿得破破烂烂的。
介词in后面接表示颜色或衣物等的名词时,意思是“穿着;戴着”。例如:
The girl in green is a good friend of mine.
穿绿衣服的女孩是我的一个好朋友。
in rags衣衫褴褛
The old man in rags used to be very rich.
衣着褴褛的那位老人过去很富有。
6. As for the bill, sir, please forget it.
至于账单嘛,先生,请把他忘了吧。
as for: with regard to至于;关于
As for you, you ought to be ashamed of yourself.
至于你,你应该感到惭愧。
As for the hotel, it was very uncomfortable and miles from the sea.
至于旅馆呢,非常不舒服,而且离海边有好几里地
→Step 5 Acting
1. Ask students to listen to the tape and role play the text. Remind them to remember that Henry has an American accent while the owner, the hostess and the waiters all have British accents. Let them pay more attention to correct pronunciation and intonation.
2. Have as many groups as possible to act out the play in front of the class.
→Step 6 Speaking
1. Ask students to read Act Ⅰ, Scene 4 again and underline all the expressions used to order food. Read them aloud.
2. Show the following form on the screen. Let students read the expressions aloud, and make sure they understand their Chinese meanings.
WAITER/WAITRESS
Can I help you?
I’ll take your order in a minute.
Are you ready to order, sir/madam?
What would you like. . . ?
Enjoy your meal!
Here’s your bill.
Here you are. CUSTOMER
I’d like. . .
I’ll have. . .
Do you have. . . ?
What do you suggest?
I’ll have that.
The bill, please.
Can I have the check, please?
2. Suppose the situation: Now imagine you are having a good meal in a restaurant. Make a dialogue with your partner, who acts as a waiter/waitress.
3. Give several minutes for the students to prepare their dialogues in pairs.
4. Ask as many pairs as possible to present their dialogues to the class.
→Step 7 Extension
Many people are crazy about buying lottery tickets (彩票). What do you think of it?
● What kind of role do you think money plays in our daily life?
● Is money everything?
Suggested Answers:
Money is not everything.
Money can buy a house, but not a home.
Money can buy a bed, but not sleep.
Money can buy a clock, but not time.
Money can buy a book, but not knowledge.
Money can buy you a position, but not respect.
Money can buy you medicine, but not health.
Money can buy a friend, but not love.
Money can buy you blood, but not life.
→Step 8 Homework
1. Learn the useful new words and expressions in this part by heart.
2. Act out the play.
英语必修二第一单元作文范文 第27篇
Recently, it has been reported that a girl got her feet stuck in the sewer, because she kept her attention on the smart phone. When she realized her feet were stuck, she tried hard to get rid of it, but she failed. With the help of policeman, she was set free. It sounds a little ridiculous, but when we look at the people around, we can find that the new technology distracts their attention from face to face communication.
People like to talk on the Internet, then they ignore the things in reality life. No matter what they are doing, waiting for the bus or sitting at the table with their friends, smart phones are always at their hands. It seems that smart phone has controlled their lives. Life is beautiful if we can see it, or we will miss the amazing moment. Don’t let the technology controls your life.
英语必修二第一单元作文范文 第28篇
高一数学必修一第一单元提纲
一.知识归纳：
1.集合的有关概念。
1)集合(集)：某些指定的对象集在一起就成为一个集合(集).其中每一个对象叫元素
注意：①集合与集合的元素是两个不同的概念，教科书中是通过描述给出的，这与平面几何中的点与直线的概念类似。
②集合中的元素具有确定性(a?A和a?A，二者必居其一)、互异性(若a?A，b?A，则a≠b)和无序性({a,b}与{b,a}表示同一个集合)。
③集合具有两方面的意义，即：凡是符合条件的对象都是它的元素;只要是它的元素就必须符号条件
2)集合的表示方法：常用的有列举法、描述法和图文法
3)集合的分类：有限集，无限集，空集。
4)常用数集：N，Z，Q，R，N
.子集、交集、并集、补集、空集、全集等概念。
1)子集：若对x∈A都有x∈B，则AB(或AB);
2)真子集：AB且存在x0∈B但x0A;记为AB(或，且)
3)交集：A∩B={x|x∈A且x∈B}
4)并集：A∪B={x|x∈A或x∈B}
5)补集：CUA={x|xA但x∈U}
注意：①?A，若A≠?，则?A;
②若，，则;
③若且，则A=B(等集)
3.弄清集合与元素、集合与集合的关系，掌握有关的术语和符号，特别要注意以下的符号：(1)与、?的区别;(2)与的区别;(3)与的区别。
4.有关子集的几个等价关系
①A∩B=AAB;②A∪B=BAB;③ABCuACuB;
④A∩CuB=空集CuAB;⑤CuA∪B=IAB。
5.交、并集运算的性质
①A∩A=A，A∩?=?，A∩B=B∩A;②A∪A=A，A∪?=A，A∪B=B∪A;
③Cu(A∪B)=CuA∩CuB，Cu(A∩B)=CuA∪CuB;
6.有限子集的个数：设集合A的元素个数是n，则A有2n个子集，2n-1个非空子集，2n-2个非空真子集。
二.例题讲解：
【例1】已知集合M={x|x=m+,m∈Z},N={x|x=,n∈Z},P={x|x=,p∈Z}，则M,N,P满足关系
A)M=NPB)MN=PC)MNPD)NPM
分析一：从判断元素的共性与区别入手。
解答一：对于集合M：{x|x=,m∈Z};对于集合N：{x|x=,n∈Z}
对于集合P：{x|x=,p∈Z}，由于3(n-1)+1和3p+1都表示被3除余1的数，而6m+1表示被6除余1的数，所以MN=P，故选B。
分析二：简单列举集合中的元素。
解答二：M={…，，…}，N={…，,,，…}，P={…，,，…}，这时不要急于判断三个集合间的关系，应分析各集合中不同的元素。
=∈N，∈N，∴MN，又=M，∴MN，
=P，∴NP又∈N，∴PN，故P=N，所以选B。
点评：由于思路二只是停留在最初的归纳假设，没有从理论上解决问题，因此提倡思路一，但思路二易人手。
变式：设集合，，则(B)
当时，2k+1是奇数，k+2是整数，选B
【例2】定义集合Ax={x|x∈A且xB}，若A={1,3,5,7},B={2,3,5}，则Ax的子集个数为
A)1B)2C)3D)4
分析：确定集合Ax子集的个数，首先要确定元素的个数，然后再利用公式：集合A={a1，a2，…，an}有子集2n个来求解。
解答：∵Ax={x|x∈A且xB}，∴Ax={1,7}，有两个元素，故Ax的子集共有22个。选D。
变式1：已知非空集合M{1,2,3,4,5}，且若a∈M，则6?a∈M，那么集合M的个数为
A)5个B)6个C)7个D)8个
变式2：已知{a,b}A{a,b,c,d,e},求集合A.
解：由已知，集合中必须含有元素a,b.
集合A可能是{a,b},{a,b,c},{a,b,d},{a,b,e},{a,b,c,d},{a,b,c,e},{a,b,d,e}.
评析本题集合A的个数实为集合{c,d,e}的真子集的个数，所以共有个.
【例3】已知集合A={x|x2+px+q=0},B={x|x2?4x+r=0},且A∩B={1},A∪B={?2,1,3},求实数p,q,r的值。
解答：∵A∩B={1}∴1∈B∴12?4×1+r=0,r=3.
∴B={x|x2?4x+r=0}={1,3},∵A∪B={?2,1,3},?2B,∴?2∈A
∵A∩B={1}∴1∈A∴方程x2+px+q=0的两根为-2和1，
变式：已知集合A={x|x2+bx+c=0},B={x|x2+mx+6=0},且A∩B={2},A∪B=B，求实数b,c,m的值.
解：∵A∩B={2}∴1∈B∴22+m?2+6=0,m=-5
∴B={x|x2-5x+6=0}={2,3}∵A∪B=B∴
又∵A∩B={2}∴A={2}∴b=-(2+2)=4,c=2×2=4
∴b=-4,c=4,m=-5
【例4】已知集合A={x|(x-1)(x+1)(x+2)>0},集合B满足：A∪B={x|x>-2}，且A∩B={x|1
分析：先化简集合A，然后由A∪B和A∩B分别确定数轴上哪些元素属于B，哪些元素不属于B。
解答：A={x|-21}。由A∩B={x|1-2}可知[-1,1]B，而(-∞,-2)∩B=ф。
综合以上各式有B={x|-1≤x≤5}
变式1：若A={x|x3+2x2-8x>0}，B={x|x2+ax+b≤0},已知A∪B={x|x>-4}，A∩B=Φ,求a,b。(答案：a=-2，b=0)
点评：在解有关不等式解集一类集合问题，应注意用数形结合的方法，作出数轴来解之。
变式2：设M={x|x2-2x-3=0},N={x|ax-1=0}，若M∩N=N，求所有满足条件的a的集合。
解答：M={-1,3},∵M∩N=N,∴NM
①当时，ax-1=0无解，∴a=0②
综①②得：所求集合为{-1，0，}
【例5】已知集合，函数y=log2(ax2-2x+2)的定义域为Q，若P∩Q≠Φ，求实数a的取值范围。
分析：先将原问题转化为不等式ax2-2x+2>0在有解，再利用参数分离求解。
解答：(1)若，在内有有解
令当时，
所以a>-4,所以a的取值范围是
变式：若关于x的方程有实根,求实数a的取值范围。
解答：
点评：解决含参数问题的题目，一般要进行分类讨论，但并不是所有的问题都要讨论，怎样可以避免讨论是我们思考此类问题的关键。
提高数学成绩诀窍有哪些
1、态度
在这个科目的学习当中态度是起到非常大的作用的,如果有态度首先就会成功一半,所以有一个认真学习的态度是非常重要的,面对任何的难点.难题,都会尽力去思考,在学习当中有这种态度,就完全可以将这们科目学好.
2、难题
在学习的当中需要养成一些好习惯,比如制定计划、练习、预习等等,这些内容都是在学习当中有非常重要的效果,预习可以让自己更加专注的听课,不会出现走神的情况,练习可以将当天所学的知识运用出来,不会有忘记的问题.
3、错题库
在学习这个科目的时候可能会有一些错题,出现错题之后可以使用小本将其记下来,可以隔几天以后做一遍,并且在复习的时候可以参照一下容易出现错误的题目,这是初中数学怎么学的重点之一.
4、笔记
对于任何的学科来说,记笔记都是非常重要的,它可以将上课所学到的重点记录下来以便于以后复习的时候方便,并且可以随时的拿出来复习一下之前的内容.
5、作业
作业对于很多的学生来说都是不陌生的,一般老师在上完课之后都会布置一些作业,这样使上课所学的内容充分的运用出来,仅仅依靠上课听是不够的,还需要在下课之后进行练习来讲上课所学的知识巩固.
在升到高中的时候,这个阶段马上面临高考,这个阶段一般的科目都讲完了,在这个阶段就开始了复习,这时候之前的笔记以及错题库都会派上用场,可以增加自己的复习效率,可以节省出时间来练习一些其他的科目.
数学学习方法
1、解题训练应立足于中、低档综合题。
⑴中、低档综合题训练价值高，因为它占中考数学试题的70%～80%。
⑵中、低档综合题要讲的深、学的透，教师讲的清楚，学生听得明白。
2、一定要规范解题步骤。
3、习题的来源。来自课本题和历年中考题的改编。
英语必修二第一单元作文范文 第29篇
高一必修1英语作文
Stepping into the new century, environment pollution has become more serious than ever since. There are different kinds of pollution. Such as, water pollution, air pollution and noise pollution and so on. It seems that we live on a planet which is full of pollution. Where all these pollution comes from? To a large extend, the environmental destruction is the heavy price that we pay for the rapid development of economy and the growing population. In order to have more fuel, people cut down trees and dig more corals. But the growing needs for energy are hardly to meet. Countless private cars on the street, the gas stations are short of gasoline, even the government has raise the price so many times in order to control the needs of gasoline, but it’s still not working. Overusing the natural resources has already affected the ecological balance. However, the factories still release the toxic air into the sky and the polluted water into the rivers. People still lack of the conscious of protecting the environment. I think it’s time for all of us to do something.
The government should put forward some more strict laws to prevent the environment from being further polluted. And they should let people know more about the importance of environment protection. And we should find the balance between the economic growth and environmental protection. Plant more trees in the deserts and stop cutting down the forest. Forbid the factories to pour the waste water into the rivers directly. Encourage people to use public transportations to work. Both government and ordinary people should join hands together to make our home clean and fresh again. Only in this way, our earth could be a better place to live in.
英语必修二第一单元作文范文 第30篇
The Person I Admire the Most
Mrs. Fulmer is my English instructor. She comes from the . Like most of my classmates, I think of her as a repeatable person. She is also very popular among us.
Mrs. Fulmer has many of the qualities that students appreciate in an instructor. First, she is cordial and patient. Whenever dealing with new teaching material, she tried hard to get every detail to all students. In addition, she understands our difficulties and does her best to help us get over them. Second, she has an expressive look and an impressive tone. So she always manages to make her lectures interesting and exciting. Finally, Mrs. Fulmer is a very capable organizer. All of us appreciate the schedules of assignments she gives us at the beginning of a term. They allow us to plan our time reasonably and efficiently.
Personally, I trust that as a dedicated woman. Mrs. Fulmer is believed to be a successful English instructor. (156 words)
英语必修二第一单元作文范文 第31篇
When it comes to the environment, it is believed that most people today are shaking their heads and sighing: water pollution, sandstorm raids, white trash everywhere... But more people are just sighing, but there is no action. Is it only when the sky above us is no longer clear that we should be protecting our environment? When the land under our feet becomes a desert, we regret that we have not cherished nature? I say, no, each of us can start by protecting our school environment from little things.
I went to school that day, and a few of my classmates said and laughed and sat down in the building, and saw a friendly and familiar figure in the distance -- our teacher zhao. Suddenly, she stopped, her head low as if she had found something. Suddenly, she crouched down... Strange, what does she do? Tie your shoes? A sprained ankle? We haven't stepped forward, but she from his pocket a piece of facial tissue, hand a pinch, picked a piece of chewing gum on the ground up, wrapped up, and then threw it into the dustbin. She turned around and saw us strange eyes, smiled and said: “not surprisingly, don't say the whole school, even if let's class, if a person a piece of gum, we will be glued here. If everyone take good care of our environment, we can live in comfort.”
Miss zhao said well and did better. I think I did a good job. For example, our classroom environment is beautiful, there are flowers and grass, my contribution is very important! Since being the head of health, I have worked hard and hard. If I'm just a little bit of a “hoof” in this regard, I've made a huge contribution to the “plant horn” of my class...
But I often see other scenes too: the white walls of the buildings are often marked with blackish handprints and watercolor marks... The classmate's thing falls into the green space at the school door, she is not to think about to go to the flowers and flowers to pick...
Think about it. If your face is blackened, you will be angry! If you are stepped on, you will feel pain! For the environment of the school, please be merciful! At the foot of wait! Let's work together to create a beautiful campus together!
英语必修二第一单元作文范文 第32篇
As soon as I was enrolled in college I reit a big burden off my mind. So did my classmates. We just wanted to relax. But at our first English Lesson onhow to improve our study the teacher told us,_ There is no end to learning. Youcan only become a top student with additional work._ And she says hard work isrewarding.
The teacher's words awakened me. In fact everyone in the world is alwayslearning. Man's talents are like wild plants. They need cutting and pruning withthe tool of learning, We lears not only inside the classroom but also outsidethe classroom. Learning is a process in which man adapts to his surroundings. Itis driven by man's desire to win respect and to contribute to society. It is thecuriosity for knowledge stimulated by knowledge itself._ To learn is to beyoung. Not to learn is to die._ This saying applies to every society and to allages.
英语必修二第一单元作文范文 第33篇
1.基础梳理
point upset ignore calm down cheat list share a series of crazy purpose dare thunder entire(~ly)trust according to power suffer recover suitcase situation disagree be concerned about walk the dog set down face to face be/get tired of get along with fall in love make a list communicate with
2.词语归纳
1)add vt/vi加;添加;增添
add up合计 加起来，但在口语中有时用于否定句，表示“莫名其妙，不说明问题”。
add up to 总计共达，所有一切都说明，总而言之。
add sth(to sth)把……加到……里去。
add to 增加，扩建。
add 表示“继续说，补充说”。
区别add和increase
add意思是“加，增加”，强调添加。或者表示将数字加起来求和。
increase“增加”，表示在数量，产量，尺寸，程度等方面的增加。
2)cheat v 欺骗;作弊 n 骗子;作弊者;骗人的事
cheat sb of sth cheat sth out of sb 从某人处欺诈某物
cheat on/at/in 作弊，欺诈
3)list v 将事物列于表上;编事物的目录 n 名单;目录;一览表
make a list of 造表，列……表
take…off the list 从表上去掉……
stand first on the list 居首位，列前茅
as listed above 如上所列
3)share
share in 分享，分担，共用
share sth with sb 和某人共用/共享某事物
share out 分配，分发;得到股息，升股息
share(n.)in/of 一分，部分
4)trust vi/vt 信任，信赖;依赖
trust in 相信，信任，信仰
trust to 依靠(运气等)，依赖
trust that… 希望，想
5)suffer vt/vi 遭受，受到，蒙受;受痛苦，受折磨，受惩罚，受损伤
suffer from 受……伤害;患……病痛
注意：suffer 和 suffer from 都不能用于被动语态
6)calm vt/vi/adj. 使平静;使镇定。平静的，镇静的，沉着的。
calm down平静下来，镇定下来
quite指人对外界事物感触的安静。对人时，侧重不激动，平静温和，不发表意见。
still指完全没有声音或者没有动静，突然静止不动。
silent主要指人不爱说话，沉默不语。
7)concern
be concerned about 担心，关心
as/so far as…be concerned 关于，至于，就某人而言
have no concern for 毫不关心
concern oneself in/with/about sth 忙于，从事;关心，关切
have a concern in 和……有厉害关系
be concerned in/with 参与，与……有关
8)separate v/adj 分开，和……分手;单独的，分开的，不同的
separate…from 使……和……分离
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