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, 一定不許”。 . You mustn’t shout in public. 注意 : 不用 mustn’t 來回答由 must(必須、一定要)開頭的問句 , 而應(yīng)用 needn’t (don’t have to)。 might比 may語氣更委婉,而不是過去式。 Might/ May I smoke in this room? No, you mustn’t. May/Might I take this book out of the room? Yes, you can. (No, you can’t / mustn’t. ) 用 May I...?征徇對(duì)方許可時(shí)比較正式和客氣,而用 Can I...?在口語中更常見。 1. Don’t walk __ the lawn. 2. Eating vegetables is good __ health. 3. I’d like to have a glass __ milk. 4. Different foods help us __ different ways. 5. It39。 1. look tired 2