_______ your letter,I would have started ff two days ago.AIf I recevied B.Had I received

问题描述:

_______ your letter,I would have started ff two days ago.AIf I recevied B.Had I received

B 这是省略IF的条件虚拟句,表示与过去事实相反,从句谓语结构应为 had done

B 此句子是虚拟结构 要是我收到你信的话就提前2天出发了。

选B这是一个虚拟语句,与过去事实相反,若与过去事实相反,条件从句的谓语动词用过去完成时(had+过去分词),主句谓语用should(would;could;might)+have+过去分词