无锡特钢 范如照:needn't 后面加to do 还是 do？

来源：百度文库 编辑：中科新闻网 时间：2024/04/28 02:55:38

do,因为此处needn't做情态动词，后面加动词原形
加/to do时need是谓语动词，而谓语动词需要助动词来否定

need有三种词性，名词、实义动词和助动词。做实义动词时可以是 need to do 需要、有必要做某事；也可以用need doing意思是（东西）必须被…，有被动的意味。既然是实义动词，否定形式就是don't need, doesn't need, didn't need.
做助动词时可做情态动词使用，意思就是“需要”，通常用于否定句，否定形式为needn't.例如，You need't worry.
He need not (needn't) go if he doesn't want to.

needn't do
doesn't/didn't /don't need to do

need doing 表示被动
例:The flowers need watering.

当need做实义动词时用不定式,当need为情态动词时加动词原形.

needn't是情态动词，后面接动词原形．

needn't 后面加to do 还是 do？ I think they needn't stay 改I don't think they need to stay 为什么加to how do you like...后面加to do 还是do ? aid sb 后面加 to do 还是 do agree to后面加do还是sth/sb feel like 后面加to do 还是 doing tellL sb. 后面是加doing还是to do needn't 和 don't need 的区别 couldn't help 后面加什么？ I don't know__ with this problem.A,what to do Bhow to do