need和have的用法
问题描述：
need和have的用法
needn't do sth和don't have to do sth的用法一样吗?
don't need to do sth和don't have to do sth又有什么关联
答
从肯定形式上可以知道答案：need 有三种用法1.情态动词,需要,need do sth 否定形式needn't do 不许要2.实意动词,需要 need to do 否定形式 don't need to do 3.need do...