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

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

why don't you ; why not ; what about 三者的区别与用法
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.你为什么不(等到)周日去?周日你不必上学.
You know the first solution didn't work.Why not try a different way?
你(已)知道第一个方法不起作用,何不尝试另一个解决方式?
That didn't do any good.What about doing it this way instead?
那(个做法)没有任何效果,那么,这样做怎么样呢?

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。

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?