问题描述: why don't ,why not & why not do 答题的时候用在什么情况? 1个回答 分类:英语 2014-10-16 问题解答: 我来补答 都是为什么不的意思Why don't you do.例如:Why don't you join us?Why not do .Why not go out with us?Why not?为什么不呢? 展开全文阅读