如：He is the man who / whom / that / x I saw yesterday. （宾语）

A prosperity which / that had never been seen before appears in the countryside.

（主语）

Please pass me the book whose cover is green. （定语）

This is the college where / in which I stayed two years ago. （地点状语）

 知识精练

Their child is at the stage _____ she can say individual words but not full sentences.

A. why B. where C. which D. what

【答案】B。解析：考查定语从句。句意：他们的孩子正处在一个可以说个别单词但不能说完整句子的阶段。先行词stage表示“时期、阶段”，在从句中作状语时，定语从句的引导词用关系副词where。故选B。