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情态动词和虚拟语气,
②虚拟语气常用句式：用于wish﹦if only后的宾语从句中，动词形式视实际情况而定；would rather sb did表示与现在和将来事实相反，would rather sb had done则表示与过去事实相反；as if, as though引导的状语从句中，动词采用相应的形式；It is﹙was﹚﹝high﹞time that ……did或should do；用于表示祝愿的句子中，Long live sb，May sb do。
※ 考点警示
切实掌握好“情态动词＋have done”表推测的各种用法，具体做题时应根据语境揣摩语气需要，做出选择。巩固should表示“竟然”，must表示“偏偏”，can表示“可能”，shall表示“必须”等情态动词的某些特殊用法。
※ 同步训练
1.（2007•辽宁）30. — Turn off the TV, Jack. ____ your homework now?
— Mum, just ten more minutes, please.
A. Should you be doing B. Shouldn’t you be doing
C. Couldn’t you be doing D. Will you be doing
2.（2007•陕西）14.I told your friend how to get to the hotel, but perhaps I have driven her there.
A. could B. must C. might D. should
3.（2007•重庆）29.-What do you think we can do for our aged parents?
-You____do anything except to be with them and be yourself.
A. don’t have to B. oughtn’t to C. mustn’t D. can’t
4.（2007•江西）27.—Where is my dictionary? I remember I put it here yesterday.
—You it in the wrong place.
A. must put B. should have put C. might put D. might have put
5.（2007•福建）25.My MP4 player isn’t in my bag. Where I have put it?
A. can B. must C. should D. would
6.（2007•浙江）15. — My cat’s really fat.
—You ______ have given her so much food.
A. wouldn’t B. couldn’t C. shouldn’t D. mustn’t
7.（2007•江苏）22. —She looks very happy. She ______ have passed the exam.
—I guess so. It’s not difficult after all.
A. should B. could C. must D. might
8.（2006•湖南）Some aspects of a pilot’s job ________ be boring, and pilots
often _______work at inconvenient hours.
A. can; have to B. may; can C. have to; may D. ought to; must
9.（2006•湖北）_______ fired, your health care and other benefits will not be immediately cut off.
A. Would you be B. Should you be C. Could you be D. Might you be
10.（2005）The World Wide Web is sometimes jokingly called the world wide wait because it _______be very
slow.
A. should B. must C. will D. can
11.（2005•Ⅲ）John, look at the time._______ you play the piano at such a late hour?
A. Must B. Can C. May D. Need
12.(2005•上海)There _______ be any difficulty about passing the road test since you have practiced a lot in the
driving school.
A. mustn’t B. shan’t C. shouldn’t D. needn’t
13.(2005•天津)I _______ have been more than six years old when the accident happened.
A. shouldn’t B. couldn’t C. mustn’t D. needn’t
14.(2005•重庆)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 done
15.(2004•辽宁)—Mum, I’ve been studying English since 8 o’clock. ____ I go out and play with Tom for a while?
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