请问shouldn't have done和might not have done 在此题中的区别?

请问shouldn't have done和might not have done 在此题中的区别? can not done sth 和shouldn not have done sth 和might have done 区别shouldn't have done 和 needn't have done have not done 和 not have done 区别在哪? might /might have done 区别 may have done might have done区别 could have done 和 might have done 的区别 1、shouldn't have done mustn't have done can't havedone 有什么区别 should have done和shouldn't have done,couldn't have should have done 和should not have done的区别 needn't have done与shouldn't have done的区别? 请问could not have done/might not have done可用于虚拟语气中吗