why don't you ; why not ; what about 三者的区别与用法

问题描述:

why don't you ; why not ; what about 三者的区别与用法

三个都是表示提出建议
Why don't you do sth?你(们)为什么不做某事呢?
Why not do sth?为什么不做某事呢?
What about doing sth?做某事怎样?

why don't +sb.(在why don't you 后面可加动词原形。)
why not后面只能加动词原形,不能加sb.
what about=how about 它们后面加动词的ing形式。

why don't you 你为什么不.why not 何不.what about 那么,(这个呢?)请看例句:The stores here open on weekends.Why don't you do it on Sunday when you don't have to attend school?我们这儿的店周末营业.你为...