what about和why not怎样区别?

what about和why not怎样区别? why not,how about,what about的区别和用法. What if 和What about、Why not的区别_____ you join us for lunch?A.What about B.What if C.why D.Why not 用why not do sth.和what about doing sth.句型造句用why not do sth.和what about doing sth.句型造句 亲, 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! why not与what about与why don‘t you与how about与why not you的区别 what do you care about why I do not feel、? ---------------you join us for lunch?A what about B what if C why D why not 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 not ,how about what about 后面是用动词Ing形式还是用原型 how about跟what about替换好,还是跟why not替换好? why not do等于什么等不等于How about或What about? what for,why not,what's up和so Let's join the chess ciub.怎样改句改成How about.和Why not.今晚八点半前搞定! what about= why not 请说详细一些what about going to the beach (同义句）为什么是 why not go to the beach? What about taking a train to Ji'nan?Good idea.在这里为什么用What about而不用Why not Why don’t和Why not有啥区别?( ) 2.--- Our teacher wouldn’t give us the answers ___ the question directly.　　--- _____ work them out by ourselves?　　A.of,Why not B.to,Why don’t　　C.of,What about D.to,Why not以此为例!