问题描述: Two people looking thought books in a bookstore为何可以直接主语加doing 1个回答 分类:英语 2014-12-13 问题解答: 我来补答 这个looking是用来修饰Two people的,就是个定语从句,中间省略了that,Two people(that) looking thought books in a bookstore. 展开全文阅读