--If she were here,I'd ask her to sing an English song for us.--B_英语解答

--If she were here,I'd ask her to sing an English song for us.--But she___here.What a pity!
A.doesn't B.wasn't C.didn't D.isn't 正确答案是D,为什么不能选B?

人气：242 ℃　时间：2019-08-19 18:48:56

解答

因为第一句话是与现在事实相反的虚拟语气,其形式是：从句是主语＋一般过去式形式（be 变were）,主句是主语＋would /should 等＋动词原行.
而第二句话是现在情况的事实陈述,所以答案是isn't 而非wasn't.