问题描述: 被动语态中要将省略的to还原的有哪些?麻烦先分一下类,就是什么类型词的要还原to,再举几个常用的例子, 1个回答 分类:英语 2014-10-18 问题解答: 我来补答 hear listen to watch see notice feel help he was seen to enter the room.She was heard to sing in the classroom. 展开全文阅读