Question

虚拟语气中would,should,might,could有什么区别

书上说，表将来用would/should/might/could+动词原形表将来，没说区别

Answer 1

might could 表可能性，前者低于后者
could 还表示能够
should 表示应该
would 的意思有点像will,只是虚拟语气中都表示相反，具体要看语意和时态了
比如I would have past the exam if I had prepared for it.
如果我有准备过的话，我本来可以通过那次考试的。

Answer 2

不会查语法书吗？