Why not do sth.=Why don't you do sth.=什么?
问题描述：
Why not do sth.=Why don't you do sth.=什么?
答
let's do sth
答
How about doing sth.=What about doing sth.
答
Why not do sth.=Why don't you do sth.=you'd better do sth.
这是疑问句的形式 祈使句的含义 否定的形式 肯定的请求
答
=what/how about doing sth
=shall we do sth
=let's do sth
=would you please do sth
答
Let's go to do sth.
Shall we do sth.
How about doing sth.
What about doing sth.
Why not to do sth.
Would you like going to do sth.
答
Why not do sth.？
=Why don't you do sth？
=What about doing sth?
=How about doing sth?
=Let's do sth.
=Shall we do sth?
这些句子都用于提建议。
希望能帮到你，祝你开心。
答
What/How about doing sth?
仅供参考,不胜荣幸哦!
答
为什么不呢