Question

问：should have done 和could have done是不是都有本应该的意思

问：should have done 和could have done是不是都有本应该的意思二者有什么区别？

Answer 1

是的，本该做了什么事情的，例如：I should have bought that house and now the price is so high and not affordable anymore.

追问

哦哦，那should have done
和could have done 有什么区别

追答

could 是can 的过去是， 用于现在时作为虚拟语态，就是可以做的，可以完成某个动作，但没有做。

Answer 2

感时花溅泪，恨别鸟惊心。