问题标题:
needn't和don'tneedto有什么区别?haven't和don'thave有needn't和don'tneedto有什么区别?haven't和don'thave有什么区别?
问题描述:
needn't和don'tneedto有什么区别?haven't和don'thave有
needn't和don'tneedto有什么区别?
haven't和don'thave有什么区别?
孙弢回答:
前者是当成情态动词的用法,后者是实义动词的用法
前者是助动词的用法,后者是实义动词的用法
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