高三一轮复习-定语从句
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定语从句(一)基本概念1.由一个句子作定语,修饰句中一个名词或代词,有时也可以修饰整个句子或句中的部分内容,这样的从句就是定语从句,被其修饰的名词或代词叫先行词。
2.关系词分为两大类,即关系代词和关系副词,其作用一是引出一个定语从句,二是代替其所修饰的先行词,三是在句中充当某个句子成分。
关系词的分类和基本用法本部分的内容比较复杂,为便于考生一目了然,我们试图用表格的形式呈现给考生。
当关系代词作介词宾语,且该介词不是和从句的谓语动词构成固定短语时,介词可以提前,这样就出现“介词+关系代词”。
先行词指物,用“介词+which/whose”,指人则用“介词+whom/whose”, 且两个定语从句一般紧接被它所修饰的先行词;但有时候它和先行词之间有可能插入其他成分,使它与先行词分隔开来,这种定语从句叫作被分隔的定语从句,在阅读文章时会经常遇到这种情况,在阅读▲定语从句与习惯句型用一个恰当的词完成下列句子,使之完整与正确。
①It is the first time _____ she has been in Shanghai.②It was the time _____ Chinese people had a hard life.解析:这里①小题是一个习惯句型,其结构为:It is/was the first/second ...time +that从句。
故①填that,其意为:这是她第一次在上海。
②小题the time是先行词,其后是表示时间的定语从句,故填when。
▲定语从句与简单句用一个恰当的词完成下列句子,使之完整与正确。
①The mother told the lazy boy to work,_____ didn't help.②The mother told the lazy boy to work._____ didn't help.解析:含有定语从句的复合句与两个单句的主要区别在于:前者有主句,有从句,必须有关系词;而后者则是两个单独的句子,不需要任何关联词。
高三语法第一轮复习--定语从句【知识梳理】一、关系代词的选择1.充当主语的关系代词。
限制性定语从句1). Edmund Halley was an English scientist who/that lived over 200 years ago.2). A plane is a machine which/that can fly.3). Such people as were recommended by him were reliable.4). a. China is one of the nations that have made (make)great progress in reducing its population growth.b. Tom is the one of the boys who is (be) praised.用法:1).在限制性定语从句中,who用于指人,which用于指物,that/as指人或指物均可。
2).as作关系代词使用时,先行词前必须有The same, such , as. so 修饰3).从句中谓语动词单复数由先行词决定。
4).One of +可数名词复数做先行词,关系代词在从句中做主语时,从句的谓语动词用复数。
the one of +可数名词复数做先行词,关系代词在从句中做主语时,从句的谓语动词用单数。
5). 作主语的关系代词不可省略。
非限制性定语从句1). The river, which was dirty in the past, is very clear now.2). The pupils, who are very happy now, will go out for a picnic soon.3). They have three daughters, all of whom are doctors.用法:1).在非限制性定语从句只能用who指人,which指物,不能用that。