虚拟语气一定要变成相应过去式吗?答:2,条件从句与过去事实不一致,句型为:If 主语+had+过去分词,主语+should(could, would, 或might)+have+过去分词,如:If the doctor had come last night, the boy would have saved.If I had not studied hard, I would have failed in the exam last term.3,条件从句与将来事实不一致,句型为:+do,主语...