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外研2003课标版《Grammar》教案优质课下载
4.引导词：引导定语从句的词(包括关系代词和关系副词)。
﹙1﹚关系代词：that/who/whom/which/as
﹙2﹚关系副词：when/where/why
5.引导词的位置：位于定语从句之前(先行词之后)。【as除外】
6.引导词的功能(作用)：
﹙1﹚连接先行词和定语从句。
﹙2﹚在定语从句中充当一定的成分(关系代词充当主语或宾语，关系副词充当状语)。
7.定语从句的类型：
﹙1﹚限定性定语从句(主句和定语从句之间无逗号)。
① 直接由引导词引导定语从句
The man who you’re talking to is my friend.
② 由介词+关系代词(whom/which)引导
The man to whom you’re talking is my friend.
I need a pen with which I can write a letter.
=I need a piece of paper on which I can write a letter.
介词的选用可根据从句中的相关词组确定，该介词通常可以放在关系代词之前，也可放在从句之尾。例如：
The man (who/whom/that) I talked about at the meeting is from Beijing University.
=The man about whom I talked at the meeting is from Beijing University.
The palace (which/that) I often pay a visit to was built in the 17th century.
=The palace to which I often pay a visit was built in the 17th century.
﹙2﹚非限定性定语从句(主句和定语从句之间用逗号隔开)。
① 直接由引导词引导定语从句。
② 由介词+关系代词(whom/which)引导。
I live in a house far away from the city， in front of which is a big tree.
There is an apple tree standing at the gate， on which are many apples.