what would you do和what would you have done有什么不同?

what would you do 陈述句 you would do something
-----would do
表示将来,会,意愿,打算 做什么事,有时候would 是will 的过去式,即过去将来时表示曾经打算、曾经将要干某事
所以这个问句可以翻译为：你会做什么/你将干什么/你打算干什么/你以前打算干什么
what would you have done?陈述句 you would have done something
-----would have done
是一种虚拟语气,表示对过去事情的假设,本来做什么
If I hadn't play games,I would have finished my homework.
如果我没有玩游戏,我本来已经完成我的作业了.（事实是我没有）
I don't blame you.I would have done the same.
我不怪你,我也会这样做的.
所以这个问句可以翻译为：(如果是你遇上的这事---注：此事已成往事）你会做什么?/(如果--过去--怎么样）你会做什么?