第1个回答 2007-09-14
Why not =why don't you
why not和why don't you是两种表示建议的不同方式，属于固定搭配，不能混用．Why not have a conversation in public?＝Why don't you have a conversation in public?
第2个回答 2007-09-12
why not是个固定的搭配词语，如果一定要用don't,必须加主语，why don't (you)\doesn't(he\she\it)
第3个回答 2007-08-31
why not和why don't you是两种表示建议的不同方式，属于固定搭配，不能混用 . Why not =Why don't you
第4个回答 2007-08-31
这是习惯用于固定搭配来的 why not要连一起用的 而根本就没why don't的
第5个回答 2007-08-31
Why not =Why don't you