问题描述: 是what has happened to还是what has happened at快,还有后面加什么! 1个回答 分类:英语 2014-12-15 问题解答: 我来补答 应该是to后面直接加名词. 再问: 能给几个例子吗?…… 再答: what has happened to you ? 后面加名词即可。 展开全文阅读