虚拟语气中对过去的虚拟主句否定是用would have not done or would not have done?

问题描述:

虚拟语气中对过去的虚拟主句否定是用would have not done or would not have done?

would have done:本应该那样做却没有做
would not have done:本不应该做的事却做了
多数情况下用于虚拟语气中.