needn't和don't need to有什么区别?haven't和 don't have 有needn't和don't nee_英语解答

needn't和don't need to有什么区别?haven't和 don't have 有
needn't和don't need to有什么区别?
haven't和 don't have 有什么区别?

人气：259 ℃　时间：2019-08-21 17:12:36

解答

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