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1、1情态动词总结 I 情态动词的特征：1. 本身有词义。2. 不能独立作谓语。2. 后接动词原形一起构成谓语。3. 不随人称和数的变化。II 情态动词各自的基本意义及用法：1. can 与 could 用法对比点can could1、表 “能力 ”Can you lift this heavy box?I couldn t understand what he said at all.2、表 “许可 ”You can use a different material instead.He said I could borrow his bike.3、 “怀疑 ”No, no, it can t
2、be true.What on earth can this mean?We thought the story could not be true. How could you be so careless?4、can与 be able to 区别1.could 代替can，表示语气更为婉转。Eg. Could I use your bike? Yes, I can2.can (能够 )=be able to(仅表能力时 )，但 be able to 表示一番努力后，才能做得到，且有更多的时态。2.may 与 might 用法对比点maymight1表 “询问 ”May I ?(=Can I
3、 ?)Might I ?(=Could I ?)(但比用 may 更客气 )2.表“允许 ”You may take the boy there.He told me he might come. (might 与 told 相呼应 )3表 “可能 ”“或许 ”She may nor like this place.I m afraid he might not like this play.注：1. May I?的答语。2. may 可表示期望或祝愿May you succeed !3. may (might) 用于目的状语从句。肯定： Yes, you may.否定： No, you mu
4、stn t 不行（语气强硬）No, you may not 或 No, you d better not.The emperor gave them some gold in order that they might begin their work at once.3. must 与 have to 用法对比点musthave to1. 表“必须 ”（主观看法）必须；没有过去式，可用于间接引语中。He told me I must do according to what he said.（客观需要）不得不，有多种时态。It s raining heavily, we can t go n
5、ow.2. 疑问句Must I ? Yes, you must.（一定）Do you have to go today?精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 12 页2No, you needn t./ you don t have to.(不必 )Yes, we do.You don t have to worry about that.4. need 与 dare 用法对比点needdare1.情态 v.+动词原形1）否定式2）疑问式He need not (needn t)go.-Need we do it again?
6、-No, you needn t do it again.He dare not say so.Dare she go out alone at night?How dare you say I m unfair?If he dare do that, he ll be punished.I dare say. (固定用法 )2.实义 v. +to do 1）肯定式2）否定式3）疑问式He needs to go.He doesn t (does not) need to go.Does he need to do it again?No, he doesn t need ot do it a
7、gain.He dares to say.He does not(doesn t)dare to say.If you dare to jump into the water from here, so dare I .3. did not need to do 表示过去没必要做She didn t need to attend the meeting yesterday, and she stayed with her children.( 她没有参加 )5. should 与 ought to 用法对比点shouldought to1、表 “应该 ”表劝告、建议You should lis
8、ten to the doctor s advice.We should learn from Zhang Hua.“ 有责任有必要”做某事You ought to finish your work before you go home.We ought to help each other.2、表 “估计 ”They should get home by now.“ 非常可能 ”的事，可译为 “总应该 ”If we start to work right now, we ought to finish it before lunch.注：1）should 还可在虚拟语气中的使用2) 注意：
9、ought to 的疑问式及否定式-Ought he to go? -Yes, I think he ought to. -No, he oughtn t to. 否定式： oughtnt to do ( 不说 ought to not do) 反疑问句： oughtnt _?6. shall 与 will 用法shallwill1. 征询对方意见或请求指示，用于第一、三人称： Shall I (we)? Shall he (she)?Where shall I (we)wait for you?1. 询问对方的意思或向对方提出要求：Will you (please) ? Won t you?
10、Would you like to.? (would替代 will 更客气 )Won t you go and see the film?你不去看电影吗-Yes, I think I will. 不，我想去。2. 表示说话人的 “意愿 ”有 “命令 ” “警告 ” “强制 ” “允诺 ” “决心 ”等，用于第二、三人称。You shall do what I tell you ( to do).我叫你干什么你就干什么。2. 表示 “意志 ” “意愿 ” ，用于各种人称：I won t do anything you don t like.我不会做任何你不喜欢的事。Would 表示过去时间的“
11、意志 ” “ 意愿 ”Shylock would not take the money earlier.精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 12 页3Everything shall be done to save the ship.一定要竭尽全力来拯救这艘船。夏洛克先前是不肯要钱的。7. used to 与 would 用法used towould1.表示过去的动作、状态，重在与现在情况的对比，不一定要有时间状语。I used to play cards a lot, but now I seldom play.My ho
12、metown is not what it used to be.1.只表示过去动作的重复，有明确的时间状语。I would go to see my grandfather on Sunday when he was in the middle school.2.would 后只接表动作的动词，不接表认识或状态动词He used to be nervous in the exam.2. 表示过去的习惯有时可互换：When we were very young, we used to / would go skating every winter.3. 表示过去的次数时，不能使用：( ）We
13、went to the Great Wall five times when we were young.( X ) We used to go / would go to the Great Wall five times when we were young.注： used to do的否定式： usednt to do 或 didn t use to do (usednt也可写作 usent)疑问式：Did you use to do ? Didnt you use to do?Used you to do? Usedn t you to do?II 情态动词表推测：1. 大多数情态动词
14、（除表能力、许可、意志外） ，都可以表示推测，其程度有差异。按可能性程度的高低排列为：must will would ought to should 完全肯定完全可能很可能 can couldmay might 可能有可能2. 区分情态动词的否定含义：may not 或许不、可能不might not 可能不can t 不可能mustn t不许、禁止shouldn t不应该needn t 不必3. 情态动词表推测具体运用：情态动词可以对现在、进行、过去推测。S主+情态动词+ be + adj对“性质 ” “特征 ” 的推测S主+情态动词+ be + n对“职业 ” “事物 ” 的推测S主+情态动
15、词+ 动词原形对经常性行为的推测S主+情态动词+ be + V-ing对进行着的行为的推测S主+情态动词+ have + PP对过去的行为的推测情态动词表推测时：1、can 只能用于否定句和疑问句2、must 只能用于肯定句（它的否定句和疑问句其实就用can 来代替了）3、如句中有情态动词+ 完成时，定是对过去的推测。4、句中如有表示不肯定的话语E.g I am not sure; I don t know 之类，常选may /might 的各种形式。4. 表示反劝的特殊的表推测形式1). could + have + P.P.表示本来能做到，但事实上没有做到。He could have fi
16、nished the task on time, but the heavy snow came.2). couldn t +have + P.P.She could not have covered the whole distance, but 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 12 页4表示本来不能做到，但已经做到了。in fact she arrived ahead of time.3) needn t + have + P.P.表示本不必做的，但已经做到了。She needn t have attended th
17、e meeting yesterday, but she did.4.) should/ought to +have + P.P.表示该做而没有做The plant is dead. I should/ought to have given ot more water.5) shouldn t/ oughtn t to +have + P.P.表示不该做而做了。You oughtn t to / shouldn t have taken her bike without permission.5. 注意：must 只能用于肯定句（它的否定句和疑问句其实就用can 来代替了）1.must + h
18、ave + P.P. 表示对过去肯定的推测，“ 一定是，准是 ”The road is wet. It must have rained yesterday.2.can + have + P.P. 表示对过去的推测（限于问句中）Can she have said so? 他可能这样说吗？3.can t + have + P.P. 表示对过去的否定推测He cannot have said such a foolish thing.III 情态动词表推测的反意疑问句1. 情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。2. 以 must 为
19、例：E.g. 1. You must be hungry now, aren t you?2. He must be watching TV , isnt he ?3 Tom must have lived her for a long time, hasn t he ?4. She must have arrived yesterday , didn t she?注：如选择题中（以She must have arrived yesterday , didn t she？为例）既有didn t she 又有 hasnt she 则以 didn t she？为最佳答案。IV 情态动词专项练习与解
20、析一( ) 1. You _ return the book now. You can keep it till next week if you like.A. can t B. mustn t C. needn t D. may not( ) 2. Where is my pen? I _ it.A. might lose B. would have lost C. should have lost D. must have lost( ) 3. I wish I _ you yesterday.A. seen B. did see C. had seen D. were to see(
21、) 4. I didn t hear the phone. I _ asleep.A. must be B. must have been C. should be D. should have been( ) 5. If my lawyer _ here last Saturday, he _ me from going.A. had been; would have prevented B. had been; would preventC. were; would prevent D. were; would have prevented( ) 6. He _ you more help
22、, even though he was very busy.A. might have given B. might have C. may have given D. may give( ) 7. If it _ for the snow, we _ the mountain yesterday.A. were not; could have climbed B. were not; could climb精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 12 页5C. had not been; could have climbed
23、 D. had not been; could climb( ) 8. Without electricity human life _ quite difficult today.A. is B. will be C. would have been D. would be( ) 9. A computer _ think for itself, it must be told what to do.A. can t B. couldn t C. may not D. might not( ) 10. Jenny _ have kept her word. I wonder why she
24、changed her mind.A. must B. should C. need D. would( )11. We _ last night, but we went to the concert instead.A. must have studied B. might study C. should have studied D. would study( ) 12. Could I borrow your dictionary? Yes, of course you _.A. might B. will C. can D. should( ) 13. Tom ought not t
25、o _ me your secret, but he meant no harm.A. have told B. tell C. be telling D. having told( ) 14. If he _, he _ that food. Luckily he was sent to the hospital immediately.A. was warned; would not take B. had been warned; would not have takenC. would be warned; had not taken D. would have been warned
26、; had not taken( ) 15. Peter _ come with us tonight, but he isn t very sure yet.A. must B. may C. can D. will( ) 16. I told Sally how to get here, but perhaps I _ for her.A. had to write it out B. must have written it outC. should have written it out D. ought to write it out( ) 17. I didn t see your
27、 sister at the meeting. If she _, she would have met my brother.A. has come B. did come C. came D. had come( ) 18. Shall I tell John about it? No, you _. I ve told him already.A. needn t B. wouldn t C. mustn t D. shouldnt( ) 19. When a pencil is partly in a glass of water, it looks as if it _.A. bre
28、aks B. has broken C. were broken D. had been broken( ) 20. It s nearly seven o clock. Jack _ be here at any moment.A. must B. need C. should D. can( ) 21. There were already five people in the car but they managed to take me as well. It _ a comfortable journey.A. can t be B. shouldn t be C. mustn t
29、have been D. couldn t have been( ) 22. Johnny, you _ play with the knife, you _ hurt yourself.A. won t; can t B. mustn t; may C. shouldn t; must D. can t; shouldnt( ) 23. The fire spread through the hotel very quickly but everyone _ get out.A. had to B. would C. could D. was able to( ) 24. When can
30、I come for the photos? I need them tomorrow afternoon. They _ be ready by 12:00.A. can B. should C. might D. need( ) 25. I stayed at a hotel while in New York.精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 12 页6 Oh, did you? You _ with Barbara.A. could have stayed B. could stay C. would stay D
31、. must have stayed( ) 26. Will you stay for lunch? Sorry, _. My brother is coming to see me.A. I mustn t B. I can t C. I needn t D. I wont( ) 27. Are you coming to Jeff s party? I m not sure. I _ go to the concert instead.A. must B. would C. should D. might( ) 28. Write to me when you get home. _.A.
32、 I must B. I should C. I will D. I can( ) 29. I was really anxious about you, you _ home without a word.A. mustn t leave B. shouldn t have left C. couldn t have left D. needn t leave( ) 30. Is John coming by train? He should, but he _ not. He likes driving his car.A. must B. can C. need D. may专项练习（二
33、）1. I didn t see her in the meeting room this morning. She _ at the meeting.A. mustnt have spoken B. shouldnt have spokenC. neednt have spoken D. couldnt have spoken2. One ought _ for what one hasnt done.A. not to be punished B. to not be punishedC. to not punished D. not be punished3. If you really
34、 want yourself to be in good health, you must _ always _ so much.A. not; be smoking B. not; have smokedC. not; to smoke D. be not; smoking4. With so much work on hand, you _ to see the game last night.A. mustnt go B. shouldnt go C. couldnt have gone D. shouldnt have gone5. Most of the students felt
35、rather disappointed at the English party. They say that it _ better organized.A. had been B. had to be C. must have been D. could have been6. Im surprised that he _ in the exam.A. should fail B. would have failed C. may have failed D. should have failed7. The little girl _ there alone.A. not dare go
36、 B. dares not go C. dare not go D. dare not to go8. “ Must we do it now?” “ No, you _.”A. won t B. neednt C. cant D. don t9. He said he would rather not _ it right now.A. doing B. to do C. do D. to be doing10. You _ to the meeting this afternoon if you have something important to do.A. neednt to com
37、e B. dont need come 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 6 页，共 12 页7C. dont need coming D. neednt come11. Put on more clothes. You _ be feeling cold with only a shirt on.A. can B. could C. would D. must12. I _ play football than baseball.A. would rather B. had better C. like better D. pref
38、er13. I thought you _ like something to read, so I have brought you some books.A. may B. might C. could D. must14. There was plenty of times. She _.A. mustnt have hurried B. couldnt have hurried C. must not hurry D. neednt have hurried15. The plant is dead. I _ it more water.A. will give B. would ha
39、ve given C. must give D. should have given16. You _ return the book now. You can keep it till next week if you like.A. cant B. mustnt C. neednt D. may not17. Its still early, you _.A. mustnt hurry B. wouldn t hurry C. may not hurry D. dont have to hurry18. Please open the window, _?A. cant you B. ar
40、en t you C. do you D. will you19. We _ for her because she never came.A. mustnt have waited B. shouldnt have waited C. mustnt wait D. neednt wait20. May I stop here? No, you _.A. mustnt B. might not C. neednt D. won t21. Its a fine day. Let s go fishing, _.A. won t we B. will we C. dont we D. shall
41、we22. I didnt see her in the meeting room this morning. She _ at the meeting.A. mustnt have spoken B. shouldn t have spokenC. neednt have spoken D. couldn t have spoken23. Please dont make a noise. _. Ill be as quiet as a mouse.A. Yes, I won t B. No, I won t C. No, I will D. Yes, I will24. The young
42、 man has made so much noise that he _ not have been allowed to attend the concert.A. could B. must C. would D. should25. Where is John? He _ in the library.A. should be B. must be C. can be D. must have been26. Since the road is wet this morning, _ last night.A. it must rain B. it must be raining C.
43、 it must have rained D. it must have been rain27. Will your brother stay home tonight? Im not quite sure. He _ to the cinema tonight.A. must go B. can go C. may go D. may be going28. Shes already two hours late. What _ to her?A. can have happened B. may have happenedC. should have happened D. must h
44、appen精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 7 页，共 12 页829. You must be a writer, _?A. mustnt you B. are you C. must you D. arent you30. I got up early that morning, but I _ so because I had no work to do.A. mustnt have done B. didn t need to do C. neednt have done D. cant have done31. He _ h
45、ave come here yesterday, but he didnt.A. could B. should C. ought to D. all the above32. I missed the last bus, so I _ go home on foot.A. must B. have to C. may D. had to33. He ought to win the first prize, _ he?A. oughtnt B. shouldnt C. mustn t D. both A and B34. Everyone _ do his best for the mode
46、rnizations of our country.A. can B. may C. should D. might35. Lets clean our classroom, _?A. will you B. dont we C. shall we D. do you36. Let us play basketball, _?A. will you B. dont we C. shall we D. do you37. He asked me for this book many times. Please tell him that he _ have it tomorrow.A. must
47、 B. may C. shall D. both B and C38. “ Your phone number again? I _ quite catch it.” “ Its 9568442.”A. didn t B. couldn t C. dont D. cant39. Mother _ us stories when we were children.A. was used to tell B. is used to telling C. used to tell D. used to telling40. She would rather _ more money on books
48、 _ on clothes.A. cost not B. to spare dont C. pay than D. spend than专项练习（三）1. Has Li Lin started? He said he would join in the party. He _. He is a man of keeping his word.A. could have left B. must have left C. can t come D. won t be coming2. May I park my car here? No, you _. No car is allowed to
49、park here.A. may not B. needn t C. mustn t D. darent3. Excuse me, could you tell me where the Yajia Supermarket is? It s two blocks straight ahead. You _ miss it.A. mustn t B. can t C. needn t D. shouldnt4. I saw Mr. Sun at Tongyu Station this morning. You _. He s still on holiday in Hawaii.A. could
50、n t have B. mustn t have C. shouldn t D. needn t5. How about paying a visit to Dr. Wang, our former Chinese teacher? Good idea. I will e-mail him today so that he _ know _ to expect us.A. shall; why B. could; when C. would; what D. will; how6. Everything has two sides. Beautiful songs, sometimes, _