Question

【题目】---What a journey! We’ve finally arrived!

---_____ an out-of-date train schedule, we would not have missed the train.

A. Had we not used B. Did we use

C. If we didn’t use D. If we had used

Answer 1

【答案】A

【解析】通过分析句子，可知其中包含一个虚拟条件句。根据主句we would not have missed the train可看出这是对过去情况的虚拟，所以条件句用过去完成时。又因为虚拟条件句中有had, should, were时，可以将if去掉，然后把had, should, were提到主语前面，故选A。