问题描述： 定语从句介词为何前置定语从句介词何时应该前置 1个回答 分类：英语 2014-11-05 问题解答： 我来补答 习惯用法,放在前面为了强调对象,放在后面显得累赘!例子：He is the professor to whom（不可以用who）I was talking then.他就是在那时和我说话的教授.也可以说：He is the professor who I was talking to then.注意,有些情况介词不能够前置,比如固定搭配,不可拆散例子：He is the professor who I was looking for.此时for就不能前置 展开全文阅读
