定语从句是高中阶段的重点语法项目 ,也是历年高考命题的热点 ,本文针对这一问题 ,对介词 +关系代词 (which ,whom )的结构这一难点问题 ,从四个方面进行了探索和讨论 Attributive clause is the focus of grammar project in high school stage, but also the hot topic of the college entrance examination proposition over the years. In response to this problem, this paper explores and discusses the difficult problem of the structure of which and whom.