可学会情态动词

1、1. look forward to 生于忧患，死于安乐生于忧患，死于安乐 。 2. starving 树死先从叶子黄。树死先从叶子黄。3. custom 宁愿创新，不愿陈腐。宁愿创新，不愿陈腐。 4. Gather 花开堪折直须折，莫待无花空折枝花开堪折直须折，莫待无花空折枝 。5. admire 没有最傻，只有更傻。没有最傻，只有更傻。 6. Belief 信仰是人生的向导。信仰是人生的向导。7. harvests, harvests 老婆总是别人的好，孩子总是自己的乖。老婆总是别人的好，孩子总是自己的乖。8. feast 天下没有不散的筵席。天下没有不散的筵席。9. tricks 八仙过

2、海，各显神通。八仙过海，各显神通。 10. gain, gain 有心栽花花不开，有心栽花花不开， 无心插柳柳成荫。无心插柳柳成荫。Ex.3 GrammarModal Modal VerbVerb 情态动词有一定的意义，但没有人称和情态动词有一定的意义，但没有人称和数的变化，不能独立使用，它和后面的动词数的变化，不能独立使用，它和后面的动词构成谓语构成谓语除除ought 和和have 外，后面只能接外，后面只能接不带不带to 的不定式。的不定式。 只作情态动词的只作情态动词的 can / could, may / might, ought to, must 可情态可实义的可情态可实义的need

3、, dare 可情态可助动词的可情态可助动词的 shall / should, will / would相当于情态动词的相当于情态动词的 have to, used toDiscovering useful structures Ex. 1: 1. Most ancient festivals would celebrate the end of cold weather 2. Sometimes celebrations would be held after hunters had caught animals. 3. At that time people would starve if

4、 food was difficult to find 4. or to satisfy the ancestors, who might return either to help or to do harm. 5. For the Japanese festival Obon, people should go to clean graves 6. It is now a childrens festival, when they can dress up and go 7. the children might play a trick on them. 8. Festivals can

5、 also be held to honour famous people. 9. Harvest and Thanksgiving festivals can be very happy events.10. In European countries, people will usually decorate churches and town halls 11. Some people might win awards for their farm produce 12. At the Spring Festival in China, peoplemay give children l

6、ucky money in red paper.13. These carnivals might include parades, dancing in the streets 14. The country looks as though it might be covered with pink snow. 1. ability, ability, permission, possibility, request 2. permission or request, possibility 3. promise or prediction, past habit, request 4. p

7、romise, advice, prediction 5. advice or necessity, guessing, guessingEx.2 情态动词情态动词 含义含义否定式否定式 注意点注意点can / could表能力表能力“能，会能，会”cant“不会，不能不会，不能”区别区别 be able to表许可表许可“可以可以”cant “不可以，不许不可以，不许”代替代替may表推测表推测“可能可能”cant “不可能不可能”主要用于主要用于否定、否定、疑问句疑问句中中1表示某人表示某人通过努力克服困难做成某事通过努力克服困难做成某事,要用要用was / were able to.2

8、could, might, would 表表委婉语气委婉语气用于用于疑问句疑问句, 答语答语仍须用仍须用 can, may, will.3 can 用于肯定句中用于肯定句中, 可表示可表示”有时可能有时可能”1. Everyone here can speak English.2. -Could I have a look at your notebook?3. -Yes, you can. / No, you cant. 4. It cant be Mary. She has fallen ill.5. Can this news be true?6. Where can they be?7

9、. She cant have left school, for her bike is still here.8.The monkeys look sweet, but they can be very naughty.9. She can / is able to sing the song in English.10. I could read when I was four. 11.The fire spread through the hotel quickly but everyone was able to get out.情态动词情态动词 含义含义否定式否定式 注注 意意 点点

10、may /might表许可表许可“可以可以”mustnt “不许，严禁不许，严禁”口语中也可用口语中也可用cant表推测表推测“可能可能”cant “不可能不可能”主要主要用于用于肯定肯定句，句，不不能用在能用在疑问疑问句句 （may not 可能不）可能不）1.-May I use your pencil? -Yes, you may. / No, you mustnt.2. She may not be working now. 3. John might be at home now.4. Helen may go on the trip with us, but she isnt ve

11、ry sure yet.5. She may / might have read it in the paper.6. He may not have finished reading the book.情态动词情态动词 用用 法法will表请求表请求(第二人称第二人称)表意志表意志,意愿意愿表某种倾向表某种倾向或习惯或习惯would更客气的更客气的请求请求过去的过去的意志意志,意意愿愿过去的倾向过去的倾向或习惯或习惯3. If you will help me with my English, I will be very happy. 4. I promised that I would

12、do my best.1. Will you tell me something about your hometown? 2. Would you please speak again more slowly？5. He will always take a walk after supper. 6. During the vacation he would often visit me. 情态动词情态动词 用用 法法shall征求对方意见征求对方意见(第一第一, 三人称三人称)表示命令表示命令,警告警告, 威胁或威胁或允诺允诺 (第二第二, 三人称三人称) should / ought t

13、o表示劝告表示劝告,建议建议,命令或责任命令或责任“应该应该, 必须必须”表示推测表示推测, “理应理应, 估估计计, 大概大概, 可望可望”should 还可还可表示表示“竟然竟然”1. Shall we start off now? 2.You shall do as I say.3.Tell him that he shall have the book tomorrow. 4.You shall be punished if you do that again.5.You shouldnt /oughtnt to smoke so much.6.She shouldnt have le

14、ft without saying a word.7.Its five oclock. John should be at home now. 8.We have prepared a fridge of good and drinks. 9.That ought to be enough for the party.10.Its a pity that he should be so rude to a lady.情态动词情态动词 含义含义否定式否定式注意点注意点must表必要表必要“必须必须”neednt“不必不必”( 区别区别 have to)有时表有时表“偏要偏要”表推测表推测“一定一

15、定” cant“不可能不可能”只能只能用于用于肯定肯定句，句，不能不能用于用于否定、疑问句否定、疑问句1.- Must I finish all assignments at a time? -Yes, you must. / No, you neednt. 2. I dont like this TV set. We must buy a new one. 3. There was no more bus. They had to walk home.4.You must be the new teacher. 5.There is nobody here. They must have a

16、ll gone home.6.My MP4 isnt in my bag. Where can I have put it?7.John, look at the time. Must you play the piano at such a late hour?1. A computer _ think for itself; it must be told what to do. A. cant B. couldnt C. may not D. might not2. The fire spread through the hotel very quickly but everyone _

17、 get out. A. had to B. would C. could D. was able toA D 4. That big cinema _ seat 2,000 people.A. can B. should C. ought to D. is able toA 5. Could I borrow your dictionary? Yes, of course you _. A. might B. will C. can D. should6. Might I watch TV after supper? Yes, you _. A. may B. must C. might D

18、. canC A 7. You _ return the book now. You can keep it till next week if you like. A. cant B. mustnt C. neednt D. may not8. Johnny, you _ play with the knife, you _ hurt yourself. A. wont ; cant B. mustnt ; may C. shouldnt ; must D. cant ; shouldntC B 9. -Will you stay for lunch? -Sorry, _. My broth

19、er is coming to see me. A. I mustnt B. I cant C. I neednt D. I wont10. -May I pick a flower in the garden? - _. A. No, you neednt B. Not, please. C. No, you mustnt D. No, you wontB C 11. Put on more clothes. You be feeling cold with only a shirt on. A. can B. could C. must D. would12. Must I drive to his house and pick up the children? No, . A. you shouldntB. you might not C. you neednt D. you mustntC C 13. We didnt see Tom at the meeting yesterday. He it. A. mustnt have attended B. cannot have attended C. neednt have attended D. would have not attended14. We play chess