情态动词+连词

1、语法专项练习情态动词的基本用法1. can基本含义与用法(1)（表示能力）能；会，(2)（表示可能、许可）能够；可以，(3)（表温和的命令）请做；得，(4)（用于疑问句中，表请求、提议）能不能；要不要，(5)（用于疑问句中，表惊讶、怀疑等）“（到底）可能有这样的事吗?”，（6）构成特殊句式：cannot/ can never.too.或cannot.enough “无论怎么也不过分；越越好；非常”。One cannot be too careful. 越认真越好。I cannot thank you enough.我对你感激不尽。cannot help doing./ cannot help

2、but do./ cannnot but do.“禁不住；不由得；不得不”。【注意】情态动词完成式的用法：表示已经发生的情况，cant/ couldnt have +过去分词，表示对已发生情况的否定推测，译为“（昨天）一定没”。 例如： Mary couldnt have received my letter; otherwise she would have replied before now.表示虚拟语气，could have+过去分词，表示过去本来可以做但却未做，译为“完全可以”。例如： What you said is right, but you could have phrase

3、d it more tactfully.2. may基本含义与用法(1)（表准许、请求）可以、(2)（表愿望、祝福）但愿；祝。此时，句子要用倒装语序、(3)（用于目的状语从句中）为了；为了能够、(4)（用于让步状语从句中）即使；无论、(5)构成句型：may/ might as well do sth. “还是做某事的好；不妨去做某事”【注意】情态动词完成式的用法：表示已经发生的情况，may/ might have +过去分词，表示对已发生的事情做不肯定、可能性很小的推测，或事实上根本没发生，译为“也许”。例如：At Florida Powers Crystal River plant, a p

4、otentially serious leakage of radioactive water may have been unknowingly caused by an electrician.表示虚拟语气，may/ might have + 过去分词，表示过去可以做但实际未做，译为“（那样）也许会”。例如： It might have been better to include more punchy statistics and photos of equipment in the introduction to further assist first-time office au

5、tomation managers.3. must基本含义与用法(1)（表义务、必要性、命令）必须，得，要，mustnt表“禁止、不准”、(2)（表必然性）必定、(3)（表固执、不满等）偏偏；硬要；偏要，例如：If you must know，Im going to help him look for an apartment.【注意】情态动词完成式的用法：must have +过去分词，表示对已发生情况的肯定推测，译为“(昨天)一定”。例如： My pain must have been apparent the moment I walked into the room, for the

6、first man I met asked sympathetically: “Are you feeling all right?”4. shall基本含义与用法(1)用于疑问句中，与第一、三人称连用，表示征求对方的意见，may用于征求对方的许可，shall用于征求对方的意见或指示、(2)用于第二、三人称，表示说话人的命令、警告、强制、允诺、威胁或决心等、(3)（用于法律、规则等条文中）应，须，得5. should基本含义与用法(1)（表义务、责任）应该、(2)（表预期）应该会，想必会，一定会吧、(3)（表惊讶、遗憾）竟然；居然、(4)（与疑问词连用，表示意外、纳闷、惊讶等）究竟是；到底、(

7、5)（用于条件状语从句中）一旦；万一、(6)（用于表示命令、建议、请求的动词后面的that从句中，且should可省略）应该；必须，例如：She demanded that they (should) leave at once.(7)（用于以lest，for fear that，in case引导的状语从句中）以免；唯恐，例如：She gave me a list just in case I should forget what to buy.【注意】情态动词完成式的用法：表示虚拟语气，should/ should not have +过去分词，表示应该做某事但实际上未做，或本不应该做但实

8、际上做了, 译为“本（不）应该”。如：I regret having left the work unfinished; I should have planned everything ahead carefully.6. would基本含义与用法(1)（表过去的习惯性动作）（从前）常常；经常、(2)（表示说话者的厌烦、焦躁）老是；偏要、(3)（用于否定句中，主语一般是事物，表示某事物暂时的特性）就是（不能）、(4)表示请求或个人的想法、看法，使语气婉转，例如：Would you mind if I opened the window?表推测情态动词辨析1. must，can/ could，

9、may/ might可以用来对事情进行推测。must表推测时只能用于肯定句，是对现在或过去的事情进行的推测，不能表对将来事情的推测，语气非常肯定，译为“一定”。can/ could表推测时一般用于否定句或疑问句，也是对现在或过去的事情进行推测，但could偶尔可用于肯定推测。may/ might表推测时一般用于肯定句或否定句，可对现在、过去或将来的事情进行推测，语气不很肯定，译为“可能”。2. “情态动词+have done”结构用于对过去事情的推测。might have done和could have done除了表对过去事情的推测外，还可表示一种责备语气，意为“(过去)本来可以(能够)做某

10、事，但实际上没有做到”，此时不能用may或can。例如：He might have given you more help，even though he was very busy.3. 表责备语气情态动词should，ought to，could，might，need等常用来表示说话人对过去事情的不满或遗憾，带有较强烈的责备语气。should (ought to) have done “本应该”，表示过去应该做而（实际）没有做的事情，含有责备或遗憾的语气，其否定形式为“should not/ought not to have done”，should have done还可以表示惊讶、赞叹等

11、情绪。例如：Its wonderful that you should have achieved so much in these years.could/ might have done “本来能够（会）”，表示过去本来可以(能够)做某事，但实际上没有做到。Neednt have done“本来不需要”，表示过去本来没有必要做某事，但事实上却做了。对 may 引出的问句，可以有下列回答方式：Yes, of course.Yes, certainly.Sure .No, you mustnt.No, you cant.-Might/ May I smoke in this room? - N

12、o, you mustnt. - May/Might I take this book out of the room? - Yes, you can. (No, you cant / mustnt. - Must we hand in our exercise books today? - Yes, you must. - No, you dont have to / you neednt. - Need I finish the work today? - Yes, you must. / No, you neednt. 对 will/ would you   的回答方

13、式有以下几种：Yes, I will. (No, I wont.)Sure . (Im sorry , I cant.)All right.Certainly. (No, thank you .)Yes, please.shall引出的疑问句用于第一人称， 表示征求对方意见或客气的请求。 如： 我给你把门打开好吗？我们现在开始好吗？其回答方式有以下几种：Yes, please.All right.No, thank you.情态动词 练习11You_read that article if you dont want to Ahavent Bcant C. mustnt Dneednt2I_g

14、et this done immediately or it will be too late A. must Bcan Cmay Dmight3The house is dark；the Browns_ to bed Amay go Bshould go Cshould have gone D. must have gone4“That car must have cost a 1ot of money.” “Oh，no，_.” Ait mustnt Bit hasnt Cit doesnt Dit didnt5. I _asleep in the corner，for 1 remember

15、 nothing of what happened during the night Amight fall B. must fall Cmust have fallen D. can have fallen6Im feeling sickI_so much chocolate Aneednt have eaten B. couldnt have eaten Cmustnt have eaten Dshouldnt have eaten7. My wallet is nowhere to be foundI_when 1 was on the bus Amust have dropped it

16、 Bmust drop it C. should have dropped it Dought to have dropped it8MrGreen_my letter，otherwise he would have replied before now Amust have received Bmust have failed to receive Cmust receive D. must fail to receive9. You could have done much better yesterdayWhy_? Adidnt you Bcouldnt you C. hadnt you

17、 Dshouldnt you10They have done things they ought_ Anot to do B. not to be done Cnot to have done Dnot having done11. You had better_a doctor as soon as possible Aseen Bsaw Csee Dseeing12I believe he_an accidentotherwise he would have arrived on time Awould have had B. could have had Cshould have had

18、 Dmust have had13Something must have happened on their way hereOr they_by now Ashould have arrived Bshould arrive Cwould have arrived Dwould arrive14. “Are you coming to Jeffs party?” “Im not sure. I _ go to the concert instead.” Amust B. would Cshould Dmight15“Will you stay for lunch?” “Sorry_My br

19、other is coming to see me” AI mustnt B. I cant CI neednt DI wont16“I heard they went skiing in the mountains last winter” “It _true because there was little snow there.” Amay not be Bwont be Ccouldnt be Dmustnt be17“Shall we go skating or stay at home?” “Which _do yourself?” Ado you rather B. would

20、you rather Cwill you rather Dshould you rather18I was really anxious about youYou_home without a word Amustnt leave Bshouldnt have left C couldnt have left Dneednt leave19Someone is coming hereWho_it be? Awill B. shall Cmust Dcan20May I stop here? No，you_ Amustnt B. might not Cneednt Dwont情态动词 练习21.

21、 Jean have kept his promise. I wonder why he changed his idea.A. mustB. shouldC. needD. would2. Jane have come to the party, but she not find the exact time.A. could; couldB. might; couldC. should; couldD. should; would3. So many mistakes in your homework! You more careful.A. may be B. had toC. woul

22、d be D. should have been4Her brother be at home now, because he was seen playing basketball in the stadium just now.A. mustnt B. needntC. cant D. shouldn't 5-I cant understand why our boss is late. -He the early bus.A. could missB. may have missedC. can have missedD. might miss6. She didn't

23、answer the phone, she _ asleep.A. may be B. must beC. should have beenD. must have been7The little girls eyes were red. She _.A. may cry B. must cryC. must be cried D. must have been crying8He_ his supper now, for the dining hall is still closed.A. cant be havingB. neednt be havingC. mustnt be havin

24、gD. shouldn't be having9I parked my bike behind the building, but now it is gone. It _ . A. may be stolenB. must be stolenC. must have been stolenD. must have stolen10. _ Mr. Black_go to work by ferry (轮渡)before the bridge was built?A. Did; used to B. Use; toC. Did; use to D. Does; use toUsed +主

25、语+to do? /Did +主语+use to do?11. The hotel is only a stones throw away(举步之遥), you _ take a bus.A. need not to B. not need to C. don't need D. need not12. I am busy now, _ my brother do it for you ?A. WillB. ShallC. MustD. May13. -You neednt do it right now, need you?-Yes I am afraid I _ .A. needB

26、. needntC. mustD. mustnt 14.My English-Chinese dictionary has disappeared . Who _ have taken it? A. shouldB. mustC. couldD. would15. -The room is so dirty._ we clean it? -Of course. A WillB. ShallC. WouldD. Do16. If you have something important to do, you _ waste any time.A. needntB. mustntC. may no

27、tD. wont17. If you want to borrow a football after school, your student card_ here.A. has to leaveB. must leaveC. has to be leftD. must be left18. “ Did you scold him for his carelessness?”“Yes, but _ it”A. Id rather not doB. Id rather not have doneC. I shouldnt doD. Id better not do19. “ Dont get n

28、ear to it . It is too dangerous!”“_” .A. Yes, I wont B. No, I dont C. No, I cant D. No, I wont 20. He must be in the classroom, _ he?A. mustntB. cantC. isnt D.can21. He_ be in the garden. He must be in the room.A. cant B. mustntC. will notD. may not22. “Do you have to leave now?”“I am very sorry, bu

29、t I really_.”A. cantB. haveC. shouldD. must23. “Lets go to the library, shall we?”“_?”A. No, I cantB. Yes, I willC. Yes , thank youD. No, wed better not24. “Can I take it away?”“ You _ better not.”A. shouldB. couldC. wouldD. had25. You _ have brought your camera. They all had theirs with them.A. cou

30、ldntB. needntC. wouldntD. mustnt 26. See who is there!_it be May?A. MayB. MustC. CanD. Will27. John_ be a basketball player. He is much too short.A. mayB. mustntC. cantD. should 28. The Chinese teacher looks so pale. She _ be ill.A. mustB. mustntC. canD. need29. Something_to save our earth. Do you t

31、hink so?A. can doB. must doC. has to doD. must be done30. Look at what you have done! You _ be more careful.A. oughtB. canC. wouldD. should情态动词 练习331. 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. cant come D. wo

32、nt be coming32. May I park my car here? No, you _. No car is allowed to park here.A. may not B. neednt C. mustnt D. darent33. Excuse me, could you tell me where the Yajia Supermarket is? Its two blocks straight ahead. You _ miss it.A. mustnt B. cant C. neednt D. shouldnt34. I saw Mr. Sun at Tongyu S

33、tation this morning. You _. Hes still on holiday in Hawaii.A. couldnt have B. mustnt have C. shouldnt D. neednt35. 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

34、; how36. Everything has two sides. Beautiful songs, sometimes, _ be just noise to others. A. must B. may C. should D. could37. Someone _ my umbrella. I found it wet yesterday.A. must be using B. must have used C. must use D. must have been using38. How dangerous it was! Yes, but for the passer-bys q

35、uick action, the girl _.A. was drowned B. could have been drownedC. had drowned D. should be drowned39. You _ scold such a pupil who always keeps silent so seriously that you _ hurt him.A. should; can B. may; will C. mustnt; may D. cant; must40. Why does Alice know so much about Angkor Wat? She _ ha

36、ve been there, or .A. must B. oughtnt to C. may D. cant41. You may laugh, but Ive been thinking of becoming a vegetarian. Oh, you _ be crazy. You will be hungry all the time.A. must B. may C. will D. need 42. Whats the matter with you? Oh, Im not feeling well in the stomach. I _ so much fried fish j

37、ust now.A. shouldnt eat B. mustnt have eaten C. shouldnt have eatenD. mustnt eat43. _ he have been chosen as captain of the football team? Yes, he _.A. Can; must have B. Must; must have C. Can; must D. Must; must44. Mr. Zhang _ in Shanghai tomorrow morning.A. can have arrived B. will have arrived C.

38、 may have arrived D. must have arrived45. Miss Wang started at 8 oclock, and she _ be there now.A. should B. can C. cant D. need 46. It must be Mr. Li who did it. No, it _ be Mr. Li.A. mustnt B. wouldnt C. cant D. may 47. You _ finish reading the book as soon as possible.A. may B. can C. need D. sho

39、uld48. Need you go to work now? Yes, I _.A. must B. need C. can D. dare49. Your trousers are dirty. _ them for you?A. Shall I wash B. Will I washC. Am I going to wash D. Am I washing50. You are late for school today. You _ to school earlier.A. ought to come B. should have come C. ought have come D.

40、should come51. We must learn from Lei Feng, _ we?A. may B. cant C. dont D. neednt52. She must be hungry, _ she?A. isnt B. neednt C. doesnt D wont 53. He ought to come here early, _ he?A. would B. should C. didnt D. shouldnt54. You used to smoke, _ you?A. used to B. dont C. didnt D. shouldnt 55. You

41、ought _ for what you havent done.A. not to be punished B. not be punished C. to not punished D. to not be punished56. _ you please tell me the way to the post office?A. Must B. Need C. Would D. Should57. Im sure he _ have the computer sooner or later.A. shall B. can C. must D. would 58. It is import

42、ant that we _ learn how to drive.A. have to B. should C. need D. shall59. It has been announced that candidates _ remain in their seats until all the papers have been collected.A. can B. will C. may D. shall60. How _ you say that you really understand the whole story if you have covered only a part

43、of the article? A. can B. must C. need D. may情态动词 练习461. I didnt 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 spoken62. One ought _ for what one hasnt done.A. not to be punished B. to not be punished

44、C. to not punished D. not be punished63. If you really 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; smoking64. With so much work on hand, you _ to see the game last night.A. mustnt go B. shouldnt go C. couldnt have

45、gone D. shouldnt have gone65. Most of the students felt 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 been66. Im surprised that he _ in the exam.A. should fail B. would have failed C. may have failed D. should h

46、ave failed67. The little girl _ there alone.A. not dare go B. dares not go C. dare not go D. dare not to go68. “Must we do it now?” “No, you _.”A. wont B. neednt C. cant D. dont69. He said he would rather not _ it right now.A. doing B. to do C. do D. to be doing70. You _ to the meeting this afternoo

47、n if you have something important to do.A. neednt to come B. dont need come C. dont need coming D. neednt come71. Put on more clothes. You _ be feeling cold with only a shirt on.A. can B. could C. would D. must72. I _ play football than baseball.A. would rather B. had better C. like better D. prefer

48、73. I thought you _ like something to read, so I have brought you some books.A. may B. might C. could D. must74. There was plenty of time. She _.A. mustnt have hurried B. couldnt have hurried C. must not hurry D. neednt have hurried75. The plant is dead. I _ it more water.A. will give B. would have

49、given C. must give D. should have given76. You _ return the book now. You can keep it till next week if you like.A. cant B. mustnt C. neednt D. may not77. Its still early, you _.A. mustnt hurry B. wouldnt hurry C. may not hurry D. dont have to hurry78. Please open the window, _?A. cant you B. arent you C. do you D. will you7