高中英语定语从句详解认真观察下列句子, 并注意划线部分的用法。1. That’s all that I know.2. Anyone who was late this morning should be responsible for this accident.3. This is the scientist whose achievements are well known.4. What do you think of the photos that/ which I took in the park5. They talked about the people and things that they remembered in the old days.Ⅰ. 概念：(1) 定语从句：在主从复合句中用作______的从句叫定语从句。定语从句一般紧接在先行词(antecedent)后面。(2) 先行词：被定语从句修饰的成份。先行词可以为一个词，短语，或整个主句。(3) 引导定语从句的词叫关系词，分为关系代词和关系副词。关系词的作用：1)代替先行词; 2)引导定语从句，连接主句和从句，相当于一个连词；3)必在从句中作某个句子成份（可以做主语，宾语，表语，定语，状语）常用的关系代词: that, which, who, whom, as, whose常用的关系副词: when, why, where⑴ who, that, _____ 作主语；⑵ who, whom, which, ____作宾语和表语；⑶ ______作定语。注意：当关系代词作 ____语时常常可省略, 而作 ____语时则不能省略。The student who answered the question was John. I know the reason why he was so angry.The boy (whom) you are talking to is my brother. I'd like a room whose window looks out over the sea. 定语从句三步：第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语或状语）；第三选择合适的关系词。Ⅱ. 几个关系代词的基本用法：●that: 可指人或物；在定语从句中作主语，宾语，表语。(指人时，相当于 who 或 whom；指物时，相当于 which)(一般不用于非限制性定语从句; 不可置于介词后作宾语) 如：1. Do you know the gentleman that/who spoke just now2. You can take anything ( that) you like. 3. What is the question (that/which) they are talking about4. Here is the man ( who/whom/that ) you want to see.5. She's no longer the girl ( that) she used to be before.●which: 指物；在定语从句中作主语，宾语，表语，定语。如：1. The book which/that was on the desk...
