问题
选择题
________ your letter, I would have started off two days ago.
A.If I received
B.Should I receive
C.If I could have received
D.Had I received
答案
答案:D
题目分析:考查虚拟语气,从后面的主句的时态可知if条件句要用和过去相反的虚拟语气,if的非真实条件句可以省略if,提前had,were,should,Had I received="if" I had received,选D
点评:考查虚拟语气的时候要注意和不同的时间相反的情况,主从句的时态是不一样的。要注意记忆。