2020天津武警考军校考试资料-英语知识点汇总（二十五）

　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. A letter that/which is written in pencil is difficult to read. （主语）

　　2. Do you know the gentleman that/who spoke just now？

　　3. You can take anything （ that） you like. （宾语）

　　4. What is the question （that/which） they are talking about？

　　5. Here is the man （ who/whom/that ） you want to see.

　　6. She‘s no longer the girl （ that） she used to be before.（表语）

　　7. Our hometown is no longer the one （that） it used to be.

　　= Our hometown is not the same as it used to be.

　　= Our hometown is different from what it used to be。

　　= Our hometown is not what it used to be.

　　●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 was bought by my father.（主语）

　　2. The book （which/that） I bought yesterday is very interesting.（宾语）

　　3. The factory in which his father works is far from here.

　　4. He was proud， which his brother never was. （表语）

　　5. Tom spent four years in college， during which time he learned French.（定语）

　　6. He may be late， in which case we ought to wait for him.