高中情态动词讲解及练习有答案_免费下载.doc

情态动词情态动词表示说话人对某一动作或状态的态度，可以表示“可能”、“可以”、“需要”、“必须”或“应当”等之意。情态动词没有人称和数的变化。但不能单独作谓语动词用，必须和不带to的不定式连用构成谓语动词。只有情态动词ought要和带to的动词不定式连用，在句中作谓语用。一 can/ be able to can 表客观的能力，be able to表通过主观的努力，能够 eg. He is a native speaker of English, so he can speak English well. The fire was big, but he was able to escape.二shall 用于二、三人称表命令，警告，威胁。宣布法律，法规时用shall. eg. The judge declared that all the money shall belong to the wife. What does the sign over there read? “No person smoke or carry a lighted cigarette，cigar or pipe in this area.” A.will B.may C.shall D.must三1. should 表推测时指确定或期望，即合乎理想的情况或结果。 Its nearly seven oclock. Jack should be here at any moment.2. should 表“竟然” How should he do like this?四. 情态动词表推测。1. must may might 用于肯定句，语气减弱。cant couldnt 意为“不可能”，用于否定句，疑问句。不存在mustnt have doneeg. He must be at home. He may go out . He cant be watching Tv.He couldnt have finished the job yesterday, for he was badly ill.2. could have done 本可以（实际没有）He could have been admitted to the college, but he failed.五1. may 表征求对方意见。May I have a look at it ?2 表推测时may 表不确定。eg. The train might leave at six, but Im not sure.3. may /might as well 不妨，不如eg. It is dark and you may as well stay here .Since the flight was cancelled， you might as well go by train.六情态动词+ have done1. should (not) have done ought (not) to have done 本应该做某事。eg. You should have come here earlier. You oughtnt to have eaten too much.2. must have done 表示对过去已经发生的行为进行推测，意为“一定做了某事”eg. It must have rained last night, for the road was quite muddy.3. 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”。如：4. couldnt have done / cant have done 表示对已发生情况的否定推测,“不可能做了某事”eg.Time was limited, so he couldnt have finished the task.Mary my letter; otherwise she would have replied before now.A couldnt have received B ought to have receivedC has received D shouldnt have received5. neednt have done “本没有必要做了某事”eg. You neednt have taken a taxi here, for it was near to your house. neednt do “没必要去做某事” You neednt go now.As it turned out to be a small house party， we so formally.A neednt dress up Bdid not need have dressed upC did not need dress up D neednt have dressed up七cant be too cant never be tooeg. You cannot be too careful when you drive a car.八It couldnt be better. / It coulnt be worse. (交际用语) How do you find the restaurant?It couldnt be better. / It coulnt be worse.1. I was really anxious about you. You _home without a word. A. mustnt leave B. shouldnt have left C. couldnt have left D. neednt leave2. -Write to me when you get home. -_. A. I must B. I should C. I will D. I can3. You cant imagine that a well-behaved gentleman _ be so rude to a lady. A. might B. need C. should D. would4. Mr.Bush is on time for everything. How _ it be that he was late for the opening ceremony? A. can B. should C. may D. must5. He heisitated for a moment before kicking the ball, otherwise he _ a goal. A. had scored B. scored C. would score D. would have scored6. -I hear youve got a set of valuable Australian coins. _ I have a look? -Yes, certainly. A. Do B. May C. Will D. Should7. -Is John coming by train? -He should, but he _not. He likes driving his car. A. must B. can C. need D. may8. It has been announced that candidates _remain in their seats until all the papers have been collected. A. can B. will C. may D. shall9. It is hard for me to imagine what I would be doing today if I _in love at the age of seven, with the Melinda Cox Library in my hometown. A. wouldnt have fallen B. had not fallen C. should fall D. were to fall10. -I heard they went skating in the mountains last winter. -It _true because there was little snow there. A. may not be B. wont be C. couldnt be D. mustnt be11. Oh, Im not feeling well in the stomach. I _so much fried chicken just now. A. shouldnt eat B. mustnt have eaten C. shouldnt have eaten D. mustnt eat12. How I wish every family _a large house with a beautiful garden! A. has B. had C. will have D. had had13. Naturally, after I told her what to do, my daughter _go and do the opposite! A. may B. can C. must D. should14. -The room is so dirty. _we clean it ? - Of course. A. will B. Shall C. Would D. Do15. A left-luggage office is a place where bags _be left for a short time, especially at a railway station. A. should B. can C. must D. will16. How _you say that you really understand the whole story if you have covered only part of the article? A. can B. must C. need D. may17. You might just as well tell the manufacturer that male customers _not like the design of the furniture. A. must B. shall C. may D. need18. -Isnt that Anns husband over there? -No, it _be him-Im sure he doesnt wear glasses. A. cant B. mustnt C. wont D. may not19. -Who is the girl standing over there? -Well, if you _know, her name is mabel. A. may B. can C, must D. shall20. Children under 12 years of age in that country _be under adult supervision when in a public library. A. must B. may C. can D. need21. “The interest _be divide into five parts, according to the agreement made by both sides,”declared the judge. A. may B. should C. must D. shall22. -Ill tell Mary about her new job tomorrow. -You_her last week. A. ought to tell B. would have told C. must tell D. should have told23. I _pay Tracy a visit, but Im not sure whether I will have time this Sunday. A. should B. might C. would D. could24. -I dont mind telling you what I know. -You _. Im not asking you for it. A. mustnt B. may not C. cant D. neednt25. -Excuse me, but I want to use your computer to type a report. -You _have my computer if you dont take care of it. A. shant B. might not C. neednt D. shouldnt26. -Excuse me. Is this the right way to the Summer Palace? -Sorry, I am not sure, but it _be. A. might B. will C. must D. can27. -Mum, Ive been studying English since 8 oclock. _ I go out and play with Tom for a while? A. Cant B. Wouldnt C. May not D. Wont28. I often see lights in that empty house. Do you think I _report it to the police? A. should B. may C. will D. can29. Mr.White _at 8:30 for the meeting, but he didnt show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving30. You_ be tired -youve only been working for an hour. A. must not B. wont C. cant D. may not31. I have lost one of my gloves. I _it somewhere. A. must drop B. must have dropped C. must be dropping D. must have been dropped32. Tom, you_leave all your clothes on the floor like this! A. wouldnt B. mustnt C. neednt D. may not33. John, look at the time. _you play the piano at such a late hour? A. Must B. Can C. May D. Need34. He_have completed his work; otherwise, he wouldnt be enjoying himself by the seaside. A. should B. must C. wouldnt D. cant35. I _have been more than six years old when the accident happened. A. shouldnt B. couldnt C. mustnt D. neednt36. There _be any difficulty about passing the road test since you have practiced a lot in the driving school. A. mustnt B. shant C. shouldnt D. neednt37. I was on the highway when this car went past followed by a police car. They _ at least 150 kilometers an hour. A. should have been doing B. must have been doing C. could have done D. would have done38. -Ive taken someone elses green sweater by mistake. -It _Harrys. He always wears green. A. has to be B. will be mustnt be D. could be39. -Catherine, I have cleaned the room for you. -Thanks. You _it. I could manage it myself. A. neednt do B. neednt have done C. mustnt do D. shouldnt have done40. -Lucy doesnt lending you her dictionary. -She_. Ive already borrowed one. A. cant B. mustnt C. neednt D. shouldnt41. -Do you know where David is ? I couldnt find him anywhere. -Well. He _have gone far -his coats still here. A. shouldnt B. mustnt C. cant D. wouldnt42. If I _ plan to do anything I wanted to, Id like to go to Tibet and travel through as much of it as possible. A. would B. could C. had to D. ought to43. -Shall I give you a ride as you live so far away ? -Thank you. _. A. It couldnt be better B. Of course you can C. If you like D. Its up to you44. -Tom is never late for work. Why is he absent today? -Something _ to him. A. must happen B. should have happened C. could have happened D. must have happened45. The World Wide Web is sometimes jokingly called the World Wide Wait because it _ be very slow. A. should B. must C. will D. can46. Helen _ go on the trip with us, but she isnt quite sure yet. A. shall B. must C. may D. can47. -The woman biologist stayed in Africa studying wild animals for 13 years before she returned. -Oh, dear! She _ a lot of difficulties! A. may go through B. might go through C. ought to have gone through D. must have gone through48. He paid for a seat, when he _ have entered free. A. could B. would C. must D. need49. This cake is very sweet. You _ a lot of sugar in it. A. should put B. could have put C. might put D. must have put50. -Never touch my computer while Im away. -_. A. I shouldnt B. I mustnt C. I wont D. I dont51. -Why does Michael know so much about Angkor Watt? -He _ have been there , or. A. must B. oughtnt to C. may D. cant52. -We want someone to design the new art museum for us. -_the young fellow have a try? A. May B. Shall C. Will D. Need53. -Why hasnt Jane arrived yet? -She _ again in the morning. A. shouldnt have overslept B. may have turned off the alarm clock C. must have no one to call her D. should have someone to wake her up54. You _ him so closely; you should have kept your distance. A. shouldnt follow B. mustnt follow C. couldnt have been following D. shouldnt have been following55. As teachers we should concern ourselves with what is said, not with what we think_. A. ought to be said B. must say C. have to be said D. need to say56. It seems as if the sun _ round the earth since it rises in the east and set in the west. A. circles B. is circling C. has been circling D. were circling57. All the doctors in the hospital insisted that he _badly wounded and that he _ at once. A. should be; be operated on B. were; must be operated on C. was; should be operated D. was; be operated on58. Some women _ a good salary in a job instead of staying home, but they decided not to work for the sake of the family. A. must make B. should have made C. would make D. could have made59. I advised that he _ to the hospital at once, but he insisted that he _quite then. A. be sent; was feeling B. was sent; felt C. be sent; feel D. should be sent; should feel60. English is language that many young people around the world _ not speak perfectly but _ at least understand. A. may; can B. would; might C. will; must D. could; might61. If you _ wait over there for a minute, Mr.Smith, Ill tell our manager youve arrived. A. must B. should C. will D. can62. The bus driver insisted that he _at a normal speed and therefore _ for the childs death. A. drive; not answer B. was driving; shouldnt answer C. should drive; shouldnt have answered D. drove; shouldnt answer63. _for the doctors careful treatment, he _till last year. A. If it is not ; cant live B. Were it not; couldnt live C. Had it not been; couldnt have lived D. If they were not; couldnt live64. We_for her because she never came. A. neednt wait B. mustnt have waited C. shouldnt have waited D. cant have waited65. -So you mean I have been too strict with you? -Well, if I _say so. A. must B. dare C. need D. may66. Im feeling much better now so you _the doctor. A. mustnt B. cant C. neednt D. shouldnt67. -You must let us know when youre in France. -Yes, I _. A. will B. must C. have to D. should68. Im rather surprised you havent reported him to your teacher. In my opinion, you _this as soon as you found out he was cheating. A. must have done B. might have done C. could have done D. should have done69. I lived with my sister this summer and didnt have to pay rent. So I _save most of my salary. A. could B. would C. was able to D. should70. We _last night, but we went to the concert instead. A. must have studied B. might study C. should have studied D. would study71. Its nearly seven oclock. Jack _be here at any moment. A. shall B. need C. should D.can72. 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; must73. -You may laugh, but Ive been thinking of becoming a vegetarian. -Oh, you _be out of your mind. You will be hungry all the time. A. must B. may C. will D. should74. -Tom came to work last Friday, but no one has seen him since. -_he have had an accident? A. Should B. Must C. Might D. Could75. It was really very dangerous; you_him seriously. A. might have injured B. may have injured C. must injure D. need have injured76. -Moms gift? She _have chosen a better one for me. -She_be very happy to know it. A. should; must B. might; wouldnt C. couldnt; must D. mustnt; cant77. -_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 ; must78. You_use my bike on condition that you give it back to me before I leave here. A. should B. must C. ought to D. shall79. -Look, Johns fallen asleep. -Oh, he _too late last night. A. might sit up B. should have sat up C. could sit up D. must have sat up80. Dont be so anxious about that. Helen _a note. A. may leave B. should leave C. might have left D. can have left81. It would be impossible for him to leave hospital tomorrow if he _first aid when the accident happened. A. hadnt been given B. wasnt be given C. shouldnt be given D. wouldnt be given82. Last years SARS outbreak tells us that a sound public health system _be built up and strengthened in our country. A. should B. can C. will D. may83. Why didnt you make me a telephone call yesterday? I _ about it. A. ought to tell B. ought to have been told might have told D. might have been told84. -Mum, I climbed to get the Teddy Bear from the top of the shelf. -My goodness! You _ yourself. You _do that next time. A. must have hurt; mustnt B. should have hurt; cant C. may have hurt; mustnt D. might have hurt; wont be able to85. His failure in the experiment suggested that he _his teachers proper instructions. A. should not have followed B. should not follow C. mustnt have followed D. hadnt followed86. Thank you for giving me a hand. I _in the experiment without your valuable help. A. have failed B. will fail C. would have failed D. must have failed87. You cant imagine that a top student _have failed in the college entrance examination. A. might B. need C. should D. would88. -Mummy, I have broken my train. -I told you so. You _ on it. A. mustnt have ridden B. couldnt ride C. shouldnt have ridden D. neednt ride89. -Could you tell me what happened last night? -I cant go into detail now because it _ take too long. A. would B. should C. might D. could90. Whatever your parents _ you-there is real Santa Claus. And I should know, because Ive seen him myself! A. may tell B. could tell C. may have told D. must have told91. If I ever decided to quit, then nothing my parents or my coaches _ say _ change my mind. Its my life, not theirs. A. could; would B. could; should C. would; must D. would; should92. Often, when he _something