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1、易错题名师指导：情态动词陷阱题精编陷阱题训练1. “I thought you wouldnt mind.” “Well, as a matter of fact I dont, but you _ me first.”A. should ask B. should have askedC. must ask D. must have asked2. “I called you yesterday. A woman answered, but I didnt recognize her voice.” “Oh, it _ my aunt Jean.”A. must be B. must hav
2、e beenC. might be D. can have been3. That car nearly hit me; I _.A. might be killed B. might have been killedC. may be killed D. may been killed4. Its a very kind offer, but I really _ accept it.A. mustnt B. needntC. cant D. dont5. The police still havent found her, but theyre doing all they _.A. ma
3、y B. canC. must D. will6. You _ practise the drums while the baby is sleeping.A. neednt B. mightntC. mustnt D. wont7. You _ him the news; he knew it already.A. neednt tell B. neednt have toldC. mightnt tell D. mightnt have told8. As shes not here, I suppose she _ home.A. must go B. must have goneC.
4、might go D. might be going9. Are you still here? You _ home hours ago.A. should go B. should have goneC. might go D. may have gone10. “I called you yesterday. A woman answered, but I didnt recognize her voice.” “Oh, it _ my aunt Jean.”A. must be B. must have beenC. might be D. can have been11. I _ h
5、ave met him a long time ago. Both his name and face are very familiar.A. may B. canC. would D. should13. “Shall we go shopping?” “Sorry, we _ buy anything now because none of the shops are open.”A. mustnt B. needntC. cant D. shouldnt14. They often go to the restaurants for meals. They _ be very poor
6、.A. mustnt B. cantC. may not D. neednt15. I didnt see her in the meeting room this morning. She _ have spoken at the meeting.A. mustnt B. shouldntC. neednt D. couldnt17. He _ the test again, in which case, his mother will be very disappointed.A. might fail B. must have failedC. should fail D. could
7、have failed18. “Why didnt she come to the meeting yesterday?” “Im not so sure. She _ ill.”A. should be B. should have beenC. must be D. might have been19. Why did you just sit and watch? You _ me.A. could help B. should helpC. could have helped D. must have helped20. “You _ your teacher for help. He
8、 is kind-hearted.” “Yes. A whole day _.”A. can ask, will wasteB. must have asked, had wastedC. could have asked, was wastedD. shouldnt have asked, would be wasted21. “Is there a flight to London this evening?” “There _ be. Ill phone the airport and find it out.”A. must B. mightC. would D. can22. “Sh
9、ow me your permit, please.” “Oh, its not in my pocket. It _.”A. might fall out B. could fall outC. should have fallen out D. must have fallen out23. “Look at these tracks. It _ be a wolf.” “Dont be so sure. I think it _ be a fox.”A. must; could B. may; mightC. need; must D. could; need25. “Did Jim c
10、ome?” “I dont know. He _ while I was out.”A. might have come B. might comeC. mush have come D. should have come【答案与解析】1. 选B，should 后接动词完成式表示“本来应该做某事，结果未做”，此处含有责备之意。2. 选B，对过去情况的肯定推测，宜用“情态动词 + 动词完成式”，再根据句意，可确定答案为B。注：can 表示推测通常不用于肯定陈述句。3. 选B，表示过去可能发生而实际上未发生的事，用might + 动词完成式。若只是推测过去可能已经发生的事，则可用 may migh
11、t + 动词完成式，如 He may might have gone. 他可能已经走了。4. 选C。由句意可知。5. 选B，do all one can 意为“尽力”或“竭尽全力”。6. 选C，mustnt 在此相当于 cant，且语气更强。7. 选B，“neednt + 动词完成式”的意思是：本来不必做某事，但实际上做了。上句意思是“你本来不必告诉他这个消息的，因为他(当时)已经知道了”。注意，句中 knew 为过去式。8. 选B，must 后接动词完成式表示对过去情况的肯定推测，意为“一定已经做了某事”。9. 选B，should 后接动词完成式表示“本来应该做某事，结果未做”。10. 选B
12、，对过去情况的肯定推测，宜用“情态动词 + 动词完成式”，再根据句意，可确定答案为B。注：can 表示推测通常不用于肯定句。12. 选A。may have done sth 表示对过去可能发生的事进行推测，意为“可能曾经”。13. 选C。根据上下文的语境推知。cant 意为“不能”。14. 选B。根据上下文的语境推知。cant 表推测，意为“不不能”。16. 选D。couldnt have done sth 表示对过去情况进行推测，意为“过去不可能发生过某情况”。17. 选A。根据下文的 will be 可知，“他考试再不及格”是将来的事，据此可排除B和D。再根据语意，排除C。18. 选D。从
13、时间上看，由于是昨天没来开会，所以推测他生病也应指昨天，故排除A和C。从语境上看，既然上文说 Im not so sure，那么说明说话者对自己的推测没有很大把握，故选D。19. 选C。根据上文的过去时态可知，此句谈的是过去的事，故排除A和C。根据语境排除D。20. 选C。couldnt have done sth 结构在此表示责备，指过去本来可以做某事但实际上未做。第二空填 was wasted，陈述的是过去的一事实。21. 选B。根据下文的 Ill phone the airport and find it out 可知，说话人对自己的推测没有很大把握，故选 might。若选A，语气太强，不合语境;若选D，不合语法习惯，因为can 表推测通常不用于肯定陈述句中。22. 选D。既然“通行证现在不在口袋里”，那么它“掉出去”应发生在过去，故排除A和B。比较选项C和D所表示的意思，选D更恰当。24. 选A。根据 Dont be so sure 可知前面一空应填must。第二空填的could表示推测，虽为过去式形式，但表示现在意义，语气较委婉，它与表推测的 can 主要用于否定句和疑问句不同，它可以用于肯定陈述句。25. 选A。根据句中有关时态可知“他来”发生在过去，故排除B;根据 I dont know 可知选项C语气太肯定，不合适;选项D的意思是“本来应该来”，与语境不合。
