什么时候用would啊`

would 的用法:
1.(will的过去式,表示过去将来时)将
She said she would come.
她说过她会来的.
2.(表示意志)愿,要;偏要
I told her to stop nagging,but she just wouldn't listen.
我叫她别再唠叨,可她就是不听.
3.(表示过去的习惯)总是,总会
He would sit silent for hours.
他常常接连好几个小时默默地坐着.
4.(表示推测)大概,会
I think he would accept the invitation.
我想他会接受邀请的.
5.(表示喜欢、意愿)愿意,要,想
I would like to have a word with you.
我想同你说句话.
6.(表示虚拟、假设、条件等)要,将要;会,就会
If I were younger,I would join you in the expedition to the Antarctic.
如果我年轻些,我就会跟你们一起去南极探险.
7.(表示婉转的请求)请
Would it be convenient for you to leave tomorrow?
明天走你方便吗?
Would you please come tonight?
你今晚来一下好吗?
8.(表示愿望)但愿,要是...多好
I wish you wouldn't smoke any more.
我希望你别再抽烟了.
9.能,能够
The hall would seat one thousand people.
这个大厅能坐一千人.

would 的用法:(1)在文语中,用于第一人称,表示可遇而不可及的愿望,和wish 同义.如 Would I were a bird! (2)表示过去的习惯, 和used to 同义.如He would sit for hours doing nothing.(3)表示假定或条件,如 If you would only work harder, you would be sure to succ...

用would的疑问句比较委婉

虚拟语气，固定搭配