问题描述: My sister Isabel is the funniest person I know. I know 这里是什么成分啊? 1个回答 分类:英语 2014-10-04 问题解答: 我来补答 定语从句,I KNOW 前面省略了that,完整原句为 my sister isabel is the funniest person that i know.that 指代my sister isabel,同时做i know 的宾语. 展开全文阅读