用于限制性和非限制性定语从句 只用于限制性定语从句 指人 指物 指人又指物 主格 who which that 宾格 who/whom － 属格 whose/ of whom of which/ whose whose
示例 (2017·衡水市点睛金榜大联考)It's really lucky I came to a restaurant that I am known. 答案：___________ 点拨 关系代词在从句中作主语、宾语、表语和定语；关系副词在从句中作状语。
示例 (2013·全国卷Ⅱ)Having tea in the late afternoon provides a bridge between lunch and dinner, that might not be served until 8 o'clock at night. 答案：___________ 点拨 在不定代词、最高级、序数词等后用that；在非限制性定语从句和介词后用which。
示例 (2017·九江高三一模)The book, of whose the cover is broken is of great help to all of us. 答案：_____________ 点拨 在定语从句中，关系代词which在从句中常作主语或宾语，也可作定语，而whose只可作定语，“whose＋n.”相当于“the＋n.＋of which”或“of which＋the＋n.”。
示例 (2017·嘉峪关市一中三模)There are many people think that wealth is better than health. 答案：_______________________________ 点拨 主要考查在there be结构中，容易受汉语影响而漏掉用作主语的关系词who/that/which等。