与过去事实相反的虚拟语气 分类：虚拟语气 定义 表示与过去事实相反的假设。 条件 从句用had + 过去分词，主句用would/should/could/might + have + 过去分词 例句 If I had known it, I would have told you. If he had come yesterday, we would have won. 相关术语 虚拟语气 与过去相反