问题补充:
I didn’t see your sister at the meeting. If she , she would have met my brother.
A. has come
B. did come
C. came
D. had come
答案:
A. has come
B. did come
C. came
(答案→)D. had come
解析:本题考查的是if条件句中的虚拟语气。题意是:我在会议上没看到你姐姐,故你姐姐没来。因此如果“她来了”与事实相反,前面一句交代了虚拟语气的时态是一般过去时的虚拟,所以if从句中用had+过去分词。