Question

i'd rather you _ her

Look!What has happened?I'd rather you---her about the bad news.答案是hadn't told 为什么?

Answer 1

这是虚拟语气.
在would rather+that从句（此句中that可省略）中：从句用虚拟语气.从句用过去完成时说明与过去事实相反,即：“would rather that（可省）sb had done ……”
（I'd rather即“i would rather”）
I'd rather you hadn't told her about the bad news.译为：我宁愿你没有告诉她这个坏消息（但事实上她已经知道这个坏消息了,这个情况是过去事实,而此句与过去事实相反,所以用过去完成时had done 来表示）.
（纯手打哦,貌似讲得有些啰嗦）

懂了么?不懂可以再问额啊……