题目内容：

what about和how about,why not的区别
是具体用法，不是意思
注意是"具体用法"!

优质解答

what about how about 后接动词的 -ing形式.
why not 后接动词原形.都可以用来给别人提建议.给你例子：
What /How about going swimming?=Why not go swimming?
Why not play basketball?=What /How about playing basketball?