﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you
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![﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you ﹣﹣﹣Mustwecleantheclassroomatonce?﹣﹣﹣No,you](https://i2.zhongwengu.com/2f09df804fc513/6e5090/2f08c89542/6e5090d61e9153.jpg)
﹣﹣﹣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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