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,而不是過(guò)去式。否定回答時(shí)可用 can’t 或 mustn’t,表示“不可以,禁止”。 2) 表示推測(cè)、可能性 He may /might be very busy now. Your mother may /might not know the truth. 1. Do 4 by yourselves, then give a report to the whole class. 2. Group work: Four students work in one group. Let’s discuss how to form good habits. Try to use these sentences: We should…/We shouldn’t… We must …/We mustn’t… Project Exercises 根據(jù)句意用適當(dāng)?shù)慕樵~填空。 . You mustn’t shout in public. 注意 : 不用 mustn’t 來(lái)回答由 must(必須、一定要)開(kāi)頭的問(wèn)句 , 而應(yīng)用 needn’t (don’t have to)。 1. look tired 2