﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you

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問題詳情:

﹣﹣﹣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】﹣﹣我們必須馬上打掃教室嗎?

﹣﹣不,你們不必.你們可以放學後打掃它.

【解答】mustn't禁止;needn't不必;can't不能.根據問句"Must we clean the classroom at once?"可知此處是以must開頭的一般疑問句,作否定回答時用:No, you needn't./No, you don't have to. 結合選項可知用needn't符合題意.

【點評】本題考查情態動詞,must提問,否定回答為needn't是做題的關鍵知識點.

知識點:情態動詞

題型:選擇題

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