问题描述: why don't和why not 1个回答 分类:英语 2014-11-13 问题解答: 我来补答 why not...是why don't.的简略形式,多用于口语.区别就是why don't后面还需要指定对象,譬如:why don't you stay?而why not后面不需要指定对象,譬如:why not stay?所以对象需要根据上下文来推测 展开全文阅读