问题描述: He was astonished at what he found.这句话中的at和what的用法是什么,what和that的区别是什么, 1个回答 分类:英语 2014-12-02 问题解答: 我来补答 He was astonished at what he found.=He was astonished at the thing that he found.the thing=what 展开全文阅读