needn't和don't need的区别和用法?
问题描述：
needn't和don't need的区别和用法?
答
there is only don't need
答
need可以作为情态动词和实义动词.所谓情态动词,就是如同can一样的,后面只能跟动词原形(DO STH).而它的否定形式也是同can一样,在后面加not,也就是needn't.所以,needn't do sth是正确的.实义动词,就如同want一样,后面...