Modal Verb

1. Modal Verb

2. -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 have been D. couldn't have been • 答案选D. • 不可能是很舒服的。有were提示说明发生在过去,否定式表示对过去情况的推测，意为："决不会…；决不可能…".

3. 2. Loudspeakers were fixed in the hall so that everyone ___ an opportunity to hear the speech. A. ought to have B. must have C. may have D. should have 答案选D. so that引导的目的状语从句, 与情态动词的搭配有: so that +主语+may, might, shall, should等.should 和 ought to意思接近但should口气上带有更多的主观信心。 因为主句是过去时,所以D符合题意.

4. 3. “You___ borrow my notes provided you take care of them,” I told my friend. A. could B. should C. must D. can 答案选D. provided（that）+从句表示一种假设条件，相当于if。根据情况可用虚拟语气或是陈述语气,这里表示真实的条件句.英语中表示“许可/建议”，在口语中常用can/may，而不用could/might.这里正是口语中的给与“许可”，故选择D.

5. 4. Aren’t you tired? I ___ you had done enough for today. A. should have thought B. must have thought C. might have thought D. could have thought 答案选A. “should +have+ done ”意思是“本来应该做某事,而实际没做”,符合此处 语义逻辑关系 “must+ have+ done”表示对过去事情的肯定推测，译成“一定做过某事”,只用于肯定句might+have+done”表示对过去事情的推测,might与may意思相同,但可能性更小,多用于虚拟语气中

6. 5. He ____ unwisely, but he was at least trying to do something helpful. A. may have acted B. must have acted C. should act D. would act A. 情态动词+have done用来表示对过去事实的推测, may与must在肯定程度上有很大的区别. 此处选may最合适. 6. You _____ Mark anything. It was none of his business. A. needn’t have told B. needn’t tell C. mustn’t have told D. mustn’t tell 答案选A. 表示本没有必要做而做了.

7. 7．Lucy’s gone to school but her bike’s still here. She ___ by bus. A. must have gone B. should have gone C. ought to have gone D. could have gone 答案选A。 must用在肯定句中表示较有把握的推测，意为“一定”。当must后接完成时的时候，表示对已发生的事情的推测。根据句意，此处是比较有把握的推测，故选A。

8. 8．He ____ sixty or so when I first met him in a park. A. had been B. must be C. has been D. must have been D.情态动词must可用于表示很有把握的推断.对于现在事情的肯定推断,用must do;而对于过去的推断,用must have done.本句是对他过去年龄的肯定判断,故选D. 9．I wonder who drank all the milk yesterday. It ___ have been Peter because he was out all day. A. mustn’t B. can’t C. won’t D. needn’t B. can’t是表示肯定推测的must的否定形式,表示“不可能,不会是”.

9. 10．You ____ park here. It’s an emergency exit for the fire bridge. A. mustn’t B. needn’t C. wouldn’t D. oughtn’t 答案选A.表示“禁止,一定不能”. 11. Pauline ______ in the laboratory for days and nights until the experiment is finished. A. will stay B. stays C. is staying D. have stayed 答案应选择A Will是对某些习惯性事态的推测。

10. 12.If your main parachute(降落伞) ­­_______ fail to open, your second one will open automatically. A. should B. will C. can D. may 答案应选择A Should 是对不确定事情的一种猜测，表示uncertainty 13. Oil _______ on water. A. should float B. can float C. will float D. may float 答案应选择C 对某些不受时限的客观过程的推测，只用will，表示现在时间，可与一般现在是的类似用法交替使用。本句可改写为 Oil floats on water。

11. 14. I went there in 1984, and that was the only occasion when I _____ the journey in exactly two days. A. must take B. must have made C. was able to make D. could make. 答案应选择C can表示一般性的能力，而be able to 可以特指某一次能够。 15. If you _____ kindly wait here a minute, I’ll ring the director’s office. A. will B. would C. shall D. can 答案应选择B Will用于第二人称主语请求句时，为了缓和语气可能含有的命令口气，可在will you 后面增加礼貌性词语，如will you please/kindly···

12. 16. He _______ be praised if he works hard for the people. A. should B. shall C. ought to D. need to 答案应选择B 第二、三人称作主语表“意愿”时用shall。这时shall所表示的“意愿”是说话人的“意愿”。 17. Tom wanted to come, but he _____ . A. dare B. doesn’t dare C. daredn’t D. daren’t 答案应选择D Dare的否定形式（daren’t）可指过去时间。

13. 18. Oh, It’s 7:55 o’clock. The film ________ by the time we reached the theatre because it only lasts 5 minutes. A. might have finished B. must have finished C. could have finished D. should have finished 答案应选择B 根据题意可知，到电影院时电影一定已经结束。 19. You________ yourself. A. must have killed B. might have killed C. could have killed D. should have killed 答案应选择B 这句话的意思是“你差点儿送了命”。

14. 20. He________ the 8：00 train because he didn’t leave home until 8:10. A. couldn’t have caught B. shouldn’t have caught C. ought to have caught D. must not have caught 答案应选择A couldn’t have done 表示对过去事实否定的猜测，意思为“不可能做某事”； shouldn’t have done 表示过去本不应该做某事，但事实上做了； ought to have done 表示过去本应该做某事，但事实上没做； must have done 表示对过去事实肯定的推测，否定用法应用 couldn’t have done

15. 21. — May I leave the office before 5 o’clock in the afternoon? — No, I’m afraid you＿＿＿＿＿＿＿. A. needn’t B. shouldn’t C. mustn‘t D. won’t 答案选C。may表示“允许”。回答may引起的问句，肯定式一般用 Yes, of course.／Yes, certainly.／Sure.／Yes, you may.否定式用No, you mustn’t。 22. The traffic light is red, so I＿＿＿＿＿＿stop my car. A. Must B. have to C. can D. mustn’t 答案选B must表示说话人的主观愿望，而have to多表示客观需要。

16. 23. Let’s clean the classroom, ＿＿＿＿＿＿＿? A. won’t you B. shall we C. do we D. will not you 答案 B Let’s do sth .表示“建议做某事”，含听话一方在内，故用 shall we；如果用Let us do sth.结构，则用will you?表示请求对方允许。 24. 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. must 答案 A can表示“可能性”，通常用于否定句或疑问句中，且有时还带有“惊奇、不相信”等感情色彩

17. 25. —— Must I take a bus? —— No, you＿＿＿＿. You can walk from here. A. must not B. don’t C. don’t have to D. had better not to 答案C. 回答must引起的问句，否定回答用needn’t或don’t have to 26. I＿＿＿＿＿＿often go fishing when I lived in the countryside. A. should B. would C. could D. might 答案B. would在此表示过去的习惯、习性、倾向等，意为"常......",通常与often, sometimes, for hours等表示时间的短语连用。

18. 27. — 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 won’t 答案 B mustn’t 不允许、禁止 can’t客观上不能办到 needn’t不需要 won’t不会，不愿意 28. It’s nearly seven o’clock. Jack _______ be here at any moment. A. must B. need C. should D. can 答案C nearly 暗示“时间不早了”，Jack“按理应当(should)随时(at any moment)”都有可能到达这里。must 语气过强；can 一般不用于肯定推测；need 意义不通

19. 29. — 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 D 由“他自己喜欢开车”这一习惯推断，“他可能不会(may not)坐火车来”。can not“不可能”，语气太肯定 30. — 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 答案B should 表示按理应当，大概。can 一般不用于肯定推测；用 might 语气太不肯定，顾客可能走掉。

20. 31. He seldom listens to others. He＿＿＿＿＿answer for what he has done. A. shall B. will C. can D. would 答案A. shall 用于第二、三人称的肯定句或否定句，表示说话人的意愿，有“命令、警告、威胁、强制、允诺、决心”之意。 32. —— Shall I tell John about it? —— No, you＿＿＿＿. I know his telephone number. A. needn’t B. wouldn’t C. mustn’t D. shouldn’t 答案A. needn’t表示“不必要”；mustn’t表示“禁止”；wouldn’t表示“拒绝”。

21. 33. Tom＿＿＿＿＿＿＿show his exam results to his parents. A. dare not B. dared C. dare to D. dares not to 答案A 情态动词dare的过去式为dared，常用于否定句、疑问句及条件句中，没有人称和数的变化，否定式是在dare后接not，再接动词原形。dare作为实义动词时，有人称和数的变化，构成否定句时，前要加助动词，后接带to或不带to的动词不定式

22. 34. I don’t think he＿＿＿＿＿＿＿ a new bike. 选项有问题A. need to buy B. needs buy C. need D. need buy 答案D need作为情态动词，一般用于否定句、疑问句及条件句中，后接动词原形。表示“现在不必干某事”,用need not do sth.；表示“过去不必干某事”，用need not have done。need作为实义动词,与其它动词用法相同，用于否定句或疑问句要加助动词。

23. 35. —Look at these tracks. It _＿＿＿ be a wolf. —It needn't be. It  ＿＿＿ be a fox. A. must ； could              B. may ； might C. need ； must               D. could ； need 答案A 第一空的答案要根据答语来判断。“needn't'‘的出现表明第一空为”must“。后一空表猜测，可以用could. 36. —— Could I use your telephone? —— Yes, of course you ＿＿＿＿＿. A. could B. will C. can D. might 答案C Could I...？问句表示委婉的请求，若允许对方，应用can来作答，而不用could。

24. 37. —— Don’t forget to bring my new books tomorrow afternoon. —— No, I＿＿＿＿＿＿＿. A. don’t B. can’t C. won’t D. couldn’t 答案C will在此表示“应诺” 38. 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 答案B shouldn’t have done表示“过去本来不应该做某事而事实上已经做了”。

25. 39. You＿＿＿＿＿＿＿go to the party if you don’t finish your homework first. A. won’t B. don’t C. oughtn’t D. shan’t 答案D shall 用于第二、三人称的肯定句或否定句，表示说话人的意愿，有“命令、警告、威胁、强制、允诺、决心”之意。 40. —— It is rather cold here. Shall we light a fire? —— No, we＿＿＿＿＿＿because things are easy to catch fire. A. won’t B. can’t C. mustn’t D. needn’t 答案C mustn’t在此表示“禁止”