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﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you

问题详情:

﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you

﹣﹣﹣Must we clean the classroom at once?

﹣﹣﹣No, you ________. You may clean it after school.(  )

A.mustn't                            B.needn't                               C.can't

【回答】

B.

【分析】﹣﹣我们必须马上打扫教室吗?

﹣﹣不,你们不必.你们可以放学后打扫它.

【解答】mustn't禁止;needn't不必;can't不能.根据问句"Must we clean the classroom at once?"可知此处是以must开头的一般疑问句,作否定回答时用:No, you needn't./No, you don't have to. 结合选项可知用needn't符合题意.

【点评】本题考查情态动词,must提问,否定回答为needn't是做题的关键知识点.

知识点:情态动词

题型:选择题

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