must的否定形式是什么-搜答案-拍题作业网

mustn't

回答may引导的问句用否定时是mustn't,例如：MayIuseyourcomputer?No,youmustn't.如果说"可以不"用maynot,例如：Youmaynotgohomerightn

don't

haven't

must-Yes,youshould./No,youneedn't.need-Yes,youshould/may/can/need./No.youneedn't/musn't.may-Yes,youm

以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”.2.时间状语：before,bytheendoflastyear(term,month…),etc.3.

应为must否定是不表推测而can否定时表推测,所以用can,你可以上网搜索情态动词,会有更多收获的学习愉快*_^,希望能被采纳

willnot/won't

must的否定形式

mustn't

maynot

mustn't

can--can'tmay--maynotmust--mustn't

youneed'tstayinbed

needn't

由must引导的疑问句,肯定回答用mustn't或haveto,否定回答用needn't或don'thaveto意思是“不必”must的否定形式mustn't,表示禁止,意思是“不能,不许”强调客观情

must+动词原形再问：否定形式再答：否定形式needn't再答：should+原形再答：shouldn't再问：maynot行吗再答：行

couldnot(couldn't)

won't

有两种：Heneedn'tleaveearly.Hedoesn'thavetoleaveearly.对于情态动词must的否定可以用needn't,也可以用don'thaveto

没有.如果要表示预测性的“一定不会”可用can't,couldn't.