情態(tài)動詞練習(xí)附答案詳解.doc

( ) 1. You _ return the book now. You can keep it till next week if you like. A. cant B. mustnt C. neednt 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( ) 4. I didnt 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 prevent C. were; would prevent D. were; would have prevented( ) 6. He _ you more help, 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 C. had not been; could have climbed 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. cant B. couldnt C. may not D. might not( ) 10. Jenny _ have kept her word. I wonder why she 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 to _ 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 taken C. would be warned; had not taken D. would have been warned; had not taken( ) 15. Peter _ come with us tonight, but he isnt 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 out C. should have written it out D. ought to write it out( ) 17. I didnt see your 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 _. Ive told him already. A. neednt B. wouldnt C. mustnt D. shouldnt( ) 19. When a pencil is partly in a glass of water, it looks as if it _. A. breaks B. has broken C. were broken D. had been broken( ) 20. Its nearly seven oclock. 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. cant be B. shouldnt be C. mustnt have been D. couldnt have been( ) 22. Johnny, you _ play with the knife, you _ hurt yourself. A. wont; cant B. mustnt; may C. shouldnt; must D. cant; 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 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. Oh, did you? You _ with Barbara. A. could have stayed B. could stay C. would stay D. must have stayed( ) 26. Will you stay for lunch? Sorry, _. My brother is coming to see me. A. I mustnt B. I cant C. I neednt D. I wont( ) 27. Are you coming to Jeffs party? Im 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. I must B. I should C. I will D. I can( ) 29. I was really anxious about you, you _ home without a word. A. mustnt leaveB. shouldnt have left C. couldnt have left D. neednt 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答案全解1C 從原題中You can keep it till next week if you like這一信息句可知，“你不必現(xiàn)在還”。2D 從原題中Where is my pen?這一信息句可告訴考生，“筆丟了”，丟的動作是過去發(fā)生的。因此用must + have done表示對過去事實的肯定猜測。3C 原題中的yesterday這一信息詞告訴考生，在wish后的賓語從句中，用過去完成時，表示與過去事實相反的愿望。4B 從原題中的I didnt hear the phone.這一信息可以判斷出，用must have done表示過去事實的準(zhǔn)確的肯定猜測。5A 從原題中l(wèi)ast Saturday這一信息詞可知，條件句中用表示與過去 事實相反的過去完成時，主句用would + have done。6A might have + 過去分詞，在次是虛擬語氣，表示“本來可以給你更多的幫助”，而事實則是幫助較少。7C 從原題中的yesterday這一信息詞暗示考生，該句應(yīng)選用與過去事實相反的過去完成時，If it had not been for “要不是因為”。8D 原題中的Without electricity相當(dāng)于一個條件句：If there were no electricity,故主句用human life would be quite difficult today.9A can可以表示一種客觀上的能力，本句cant，表示“不能，不會”。10B 從原題總的“I wonder why she changed her mind”“我不知道為何他改變了主意了?！边@句話告訴考生Janny沒有守諾言。因此，用should + have done，表示“過去本應(yīng)該做某事，而實際上沒有做”。11C 可參看10題。意思是：“昨晚本應(yīng)該學(xué)習(xí)，但是卻去聽音樂會了?！?2C 原題中的could不是過去時，而表示一種委婉、客氣的禮貌用語。因此用could提問時，用can回答。同樣用would，might提問，用will和may回答。注意 Would you rather do such a thing? Yes, I would. Would you like some tea? Yes, I would.這兩個對話中的would rather，would like是慣用法，故不能用will來回答。因為在這兩個句型中，will不能去替換would。13A 可參看10、15題。該句意思是：“湯姆本來不該告訴我你的秘密，但他沒有傷害你的意思。”ought not to have done = shouldnt have done14B 從答語中的Luckily he was sent to the hospital immediately這一信息句可提示考生，條件句應(yīng)填表示與過去事實相反的時態(tài)。15B 從原題中的but he isnt very sure yet這一信息句可暗示考生，Peter當(dāng)晚來的可能性不大。A是“準(zhǔn)來，肯定來”，D是“將要來”。16C 可參看10、11、13題?！氨緫?yīng)該”而事實上沒有17D 從原題中I didnt see your sister at the meeting和后文she would have met my brother這兩個信息句可知，if條件句中應(yīng)填與過去事實相反的過去完成時?？蓞⒖?、7、14題。18A 你不必告訴他。因為Ive told him already這一信息句已暗示考生了。19C 當(dāng)as if引導(dǎo)虛擬語氣的句子是，如果主句與從句中的謂語詞所表達(dá)的動作同時發(fā)生時，as if后接一般過去時。例如：He walked as if he were lame.如果從句中的謂語動作發(fā)生個在主句謂語動作之前，則用過去完成時。例如：He talked as if he had known the secret.不論主句中的謂語是現(xiàn)在時還是過去時。20C 只要考生抓住nearly一詞和后文at any moment（隨時的意思）這兩個信息詞語，就能很快選出C項，表示邏輯推測，意思是“快七點鐘了，杰克一會兒就該到了。”21D 根據(jù)句意，是對過去情況的推測。“當(dāng)時決不可能是一次舒服的乘車。”must表示對過去的推測只能用于肯定句。22B mustnt表示“禁止”；may表示“有可能”。句子的意思是：“你不可以玩刀，可能會傷你自己?！?3D 該題在考考生could與was able to之間的區(qū)別。Was ab