没有已经是虚拟语气，怎么算是过去的过去对过去虚拟就可以了与过去事实相反：从 句：had + 过去分词主 句：would/ should/ could/ might + have + 过去分词表示与过去事实相反的假设和结果。如: If you had taken my advice，you wouldn't (couldn’t) have failed in the exam.
有的
过去的过去不还是过去
