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mustn't mustn't to haven't to don't haven't to
都是什么意思
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第1个回答 2010-07-18
mustn't 是很强烈的语气,表"不准,禁止"
没有 mustn't to 这种用法
have to 是客观原因 "不得不,必须" 一般不存在用haven't to 表否定,多用don't have to 没必要.
第2个回答 2010-07-18
mustn't 禁止
没有mustn't to,要把to去掉
后两项应该把n't去掉本回答被提问者采纳
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