need,may,must引导的问句(作情态动词),肯定和否定分别是什么?

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need,may,must引导的问句(作情态动词),肯定和否定分别是什么?
need,may,must引导的问句(作情态动词),肯定和否定分别是什么?

need,may,must引导的问句(作情态动词),肯定和否定分别是什么?
must-Yes,you should./No,you needn't. need-Yes,you should/may/can/need./No.you needn't/musn't. may-Yes,you may/can./No,you musn't/can't.