I didnt see your sister at home.if she ____,she would have met me_英语解答

I didnt see your sister at home.if she ____,she would have met me.
A has come B did come C had come
答案为什么是C
请说理由
另外B为什么不可以,did come我不可以理解为确实来了嘛..

人气：444 ℃　时间：2019-08-18 17:25:42

解答

这是条件句（CONDITIONAL SENTENCES ）的固定答配,请熟记.英文条件句有三种基本结构：1.现在式＋将来式If yougo ,I'll go too.2.过去式＋现在条件式If you went ,I would go too.3.过去完成式＋过去条件式If y...