Why not 和Why don`t的区分

Why not 和Why don`t的区分 why don't和why not Why not和 Why don't的区别 why don‘t you和why not的不同用法 Why not和 why don't后面怎么接动词 why not 和why don't 有什么区别啊! Why don’t和Why not有啥区别? Why not do 和 Why don't do 什么区别 not 和 why don't 在语法上的区别 Why don't you+...why not +. why don't we =why not 还是why don't you=why not why 否定的用法 why not 是不是等于why don't?