初中英语定语从句知识点：定语的理解
<p> 定语 定语用来限定、修饰名词或代词的，是对名词或代词起修饰、限定作用的词、短语(动词不定式短语、动名词短语和分词短语)或句子，汉语中常用的表示。主要由形容词担任，此外，名词，代词，数词，分词，副词，不定式以及介词短语也可以来担任，也可以由一个句子来担任。单词作定语时通常放在它所修饰的词之前，作前置定语。短语和从句作定语时则放在所修饰的词之后，作后置定语。</p><p> 定语从句是指在一个句子中作定语的句子，定语从句要放在所修饰的词后。</p><p> 如：1) <span word="The">The</span> <span word="man">man</span> <span word="who">who</span> <span word="lives">lives</span> <span word="next">next</span> <span word="to">to</span> <span word="us">us</span> <span word="is">is</span> <span word="a">a</span> <span word="policeman">policeman</span>.</p><p> 2) <span word="You">You</span> <span word="must">must</span> <span word="do">do</span> <span word="everything">everything</span> <span word="that">that</span> <span word="I">I</span> <span word="do">do</span>.</p><p> 上面两句中的<span word="man">man</span>和<span word="everything">everything</span>是定语从句所修饰的词，叫先行词，定语从句放在先行词的后面。</p><p> 引导定语从句的词有关系代词<span word="that">that</span>, <span word="which">which</span>, <span word="who">who</span>(宾格<span word="who">who</span>, 所有格<span word="whose">whose</span>)和关系副词<span word="where">where</span>, <span word="when">when</span>、<span word="why">why</span></p><p> 关系词常有三个作用：1、引导定语从句 2、代替先行词 3、在定语从句中担当一个成分</p><p>返回：初中英语知识点详解定语从句篇</p>
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