问题
选择题
I didn't see your sister at the party. If she __, she would have met my brother.
A．has come
B．had come
C．did come
D．came
答案
答案：B
本题考查的是if条件句中的虚拟语气。句意：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。