问题描述: Tell Helen,if she is at home,that i will come to see her.为什么这句中要加that? 1个回答 分类:英语 2014-11-20 问题解答: 我来补答 这个相当于是宾语从句.tell sb.sth.(sth.用以that 引导的从句代替) 展开全文阅读