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ng his homework at home. (正在進行 ) 他一定在家做作業(yè)。 He must have finished the work. (過去 ) 他一定已經完成了工作。 must can/ can’t 后可接進行時 /完成時,表示對現(xiàn)在發(fā)生的動作或過去發(fā)生的動作進行推測。 . They can’t be reading in the library. 他們一定不在圖書館讀書。 He can’t have gone to Shanghai because I saw him just now. 他不可能去了上海,我剛看見他了。 can may / might may, might 可以推測現(xiàn)在正在發(fā)生的動作或過去發(fā)生的動作,還可以推測將來的情況。 . He may/might be sleeping now. (現(xiàn)在 ) 他可能正在睡覺。 These people may/might have seen the film before. (過去 ) 這些人以前可能看過這部電影。 It may rain. There are some clouds. (將來 ) 可能會下雨。因為有一些烏云。 1. — Excuse me. Is this the right way to the Summer Palace? — Sorry, I am not sure. It _____ be. A. might B. will C. must D. can Choose the correct answer. 2. — Isn’t that Ann’s husband over there? — No, it _____ be him — I’m sure he doesn’t wear glasses. A. can’t B. must not C. won’t D. may not 3. You ____ be tired — you’ve only been working for an hour. A. must not B. won’t C. can’t D. may not 4. —