高中情态动词和虚拟语气讲解与练习附答案

1、高中英语情态动词和虚拟语气情态动词：记住下面三个方面的用法，可以快速地掌握情态动词。在遇到情态动词的题的时候，一定要先判断出题目考察的是下面3个的哪个方面。1 .常规（所有），2.判断/推测（5个+1个）,3.用于虚拟语气的情态动词 （5个）2 .常规：所有的情态动词都有常规的形式，大多 12个。Can:表示“能力”，表示“请求或允许”。Could :用法同上，语气较 can轻。Must :“必须/一定，应当"；“偏要”。May :可能/可以，表示“征求对方意见或允许”，或“祝愿”Might : 用法同上，语气较 may轻。Should :表示“应该，惊讶，委婉 /客气”。Ought

2、 to: 用法同上，语气较 should重。Will :“愿，要，会”表示“意愿，征求意见或提出请求，或执意 /决心。Would :用法同上，语气较 will轻。Shall :征求对方意见；警告/承诺（用于法律或规定中）；应该/必须（语气比should重）need/dare :两个 "半”情态动词，在肯定句中只能用need/dare + to do在否定/疑问句中可用 need/dare + to do 或need/dare + do3 .推测/判断：在高中英语中能用作推测或判断的情态动词大多是：can > could（语气由重到轻，用于否定货疑问句中）must > ma

3、y > might（语气由重到轻，用于肯定句中）should可用于各种（肯定，否定，疑问）句式中，只能用 should + do 的形式对“现在”的事的判断的用法： can/could must/may/might + do/be+doing对"过去”的事的判断的用法： can/could must/may/might + have done当然其他的情态动词在特殊的情况下也可以用于推测/判断，但不常用所以不必记忆。4 .可以用于虚拟语气的情态动词有以下5个：Should（应该）,would （将，愿，要，会） could （能）,might （可能，可以）ought to （

4、应该，语气比 should强）。八、虚拟语气：当事情不会发生或发生的可能性很小时，要用虚拟语气。虚拟的事情可能发生在“现在”，“过去”或“将来”。一定要先辨别出虚拟的情况发生在“什 么时候”，记住下面的表格和后面的几个特殊单词你就会用虚拟语气了。虚拟的情况发生在“现在”be - weredo did5个情态动词+ do虚拟的情况发生在“将来”be - weredo didwere to doshould（译为“将”不作情态动词）+ do5个情态动词+ do虚拟的情况发生在“过去”had + done/been5个情态动词 + have done不用情态动词用情态动词否 使 用 情 态 动 词

5、取 决 于 句义，如果需要用情态动词的词义时就用should, could, would, might, ought to中的某 一个。在下面的12个及物动词后的宾语从句中要用虚拟语气：三个 "建议"： advise, suggest, propose三个"要求”： ask, require/request, demand两个"命令"：order, command一个"希望"：wish一个"渴望"：desire一个"宁愿"：would rather一个"坚持"：in

6、sist注意：这12及物动词所 衍生出的名词 或形容词 所引导的同位语从句、表语从句 或主语从句中也要用虚拟语气。下面的几个句式中也要用虚拟语气：It is requested/suggested/proposed/ +that 从句（从句中要用虚拟语气）It is important/necessary/natural/strange/ a pity + that从句 （从句中要用虚拟语气）It is （ high/about）time + that从句，从句中的动词要用were/did 的虚拟形式。If only + 从句，从句中也要用虚拟语气。情态动词和虚拟语气1. I often se

7、e lights in that empty house. Do you think I report it to the police?A. shouldB. mayC. willD. can2. The room is so dirty. we clean it?OK.A. WillB. ShallC. WouldD. Can3. Dare your little daughter stay at home alone at night?A. Yes, she does B. No, she dare notC. No, she doesn tD. Yes, she dares to4.

8、It is suggested that a doctor immediately.A. be sent for B. send for C. is send for D. should send for5. When he was there, he go to that coffee shop at the corner after work everyday.A. wouldB. should C. had better D. might6. There is no light on; they be at home.A. can tB. mustn tC. needn tD. shou

9、ldn t7. Mr. Smith, he have all these papers typed for you right away?He . They should be ready by 10 oclock this morning.A. will; must B. shall; has to C. need; will D. would; ought to8. Research findings show we spend about two hours dreaming every night, no matter what we during the day.A. may hav

10、e done B. can have doneC. must have done D. should have done9. Don t press the button, John.What if I A. didB. wouldC. willD. shall10. Their basketball team has lots of excellent players, so if there is no unexpected thing to happen, their team win the championship.A. wouldB. mayC. shouldD. need11.

11、Jenny her word. I wonder why she changed her mind.A. must have kept B. can have kept C. should have kept D.would have kept12. My mother stared at me as if she me before.A. didn t seeB. hasn t seenC. hadn t seenD. doesn t see13. Peter come with us tonight, but he is nt sure.A. mustB. mayC. canD. will

12、14. Could I use your computer while you are out?Of course you A. couldB. shouldC. mustD. can15. Ive changed to take the job and I change my mind.A. mustn t B. can tC. won tD. may not16. Is John coming by bus?He should, but he not. He likes riding his bike.A. mustB.canC. needD.may17. I heard they wen

13、t skating in the mountains last winter.It be true because there was little snow there.A. may notB. won tC. couldn tD. mustn t18. I was really anxious about you. You home without a word.A. mustn t leaveB. shouldn t have leftC. couldn t have leftD. needn t leave19. Mary, how did your Math test go?I ha

14、d thought I , but in fact I came in the top 10 in my class.A. should have failed B. could have failedC. might have failed D. need have failed20. I wonder how he that to the teacher.A. dare to say B. dare saying C. not dare say D. dared say21. Its high time that he settled down in the city and a new

15、life.A. startB. started C. to start D. starting22. How I wish I to learn Japanese when I was ten.23. he have been chosen as captain of our school football team?Yes, he . Can t you see hes wearing an armband?A. Can; can t B. Must; must have C. Can; must have D. Must; must24. Isn t that Ann s mother o

16、ver there?No, it be her. Im sure she is taller.A. can tB. must not C. won tD. may not25. No wonder you caught a cold. You out last night without a coat.B. mustn t have goneD. mightn t have gone his life.I know how silly I was.A. shouldn t have goneC. couldn t have gone26. But for your timely help, t

17、he boyA. must have lost B. may lose C. might have lost D. should lose 27. What would you say if I you the truth?A. am going to tell B. were to tell C. have told D. would tell 28. You really shouldn t have shouted to them.Right. I crazy then.A. must be B. must have beenC. would have been D. should have b