如何判定定语从句

如何判定定语从句呢？可能很多人都不是很清楚，下面就是小编分享的判定定语从句的方法，一起来看一下吧。

位置：先行词之后 例：Those who are willing to attend the party , sign your name please. 定语从句是由关系代词或关系副词引导的从句,其作用是作定语修饰主句的某个名词性成分,相当于形容词,所以又称为形容词性从句,一般紧跟在它所修饰的先行词后面. 引导定语从句的关联词称为关系词,关系词有关系代词和关系副词.关系代词有that, which, who, whom, whose, as等,绝对没有“what”；关系副词有where, when, why等.关系词常有3个作用： ①连接作用,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. 注：关系代词有主语、宾语之分.一般whom作为宾语.关系代词在从句中作主语,宾语,表语,定语等,关系副词在从句中作地点状语（where）时间状语（when）,原因状语（why）.

定语

定语用来限定、修饰名词或代词,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、动名词表示的）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、从句作定语时则放在所修饰的词之后,作后置定语. 被定语从句修饰的名词、代词称为先行词.如“The man”、“The book”.

关系代词引导的定语从句举例

关系代词所代替的先行词是人或物的名词或代词,并在从句中充当主语、宾语、定语等成分.关系代词在定语从句中作主词保持一致.

1,who, whom, that

这些词代替指人,“whom”作宾语指人,“that”既可作主语又可作宾语（作宾语可以省略）,可以指人也可以指物.在从句中所起作用如下： （1）Is he the man who/that wants to see you? 他是那个想见你的男人吗?（who/that在从句中作主语） （2）He is the man whom/ that I saw yesterday. 他就是我昨天见的那个人.（whom/that在从句中作宾语） （3）The man whom you spoke to just now is our English teacher. 你刚刚说话的那个男人是我们的英语老师.

2,Whose 用来指人或物

(只用作定语, 等,作宾语时可以省略）,例如： （1）Prosperitywhich / that had neppearsin te. 农村出现了前所未有的繁荣.（which / that在从句中作主语） （2）The package (which / that) you are carryingis about to come unwrapped.你拿那个包裹快要散开了.（which / that在从句中作宾语）

whose

“whose”表示谁（可以为人也可以为物）的（东西） 例：A child whose parents are dead is called an arphan.双亲都死了的`孩子叫做孤儿.（“whose”表示那个孩子的双亲） He lives in a room whose window faces south.他住的那个房子的窗户是朝南的.（“whose”表示那个房子的窗户） 关系代词：在句中作主语、宾语或定语. 1. that既可代表事物也可代表人,“which”代表事物；它们在从句中作主语或宾语,“that”在从句中作宾语时常可省略关系词,“which”在从省略.[eg：This is the book （which）you want.] 2. 不及物动词+介词”的介词的宾语代词“wh”放在它原来的位置. 3. 代表物时多这时的that常被省略； c）被形容词最高级修饰时；既有人又有物时； e）整个句中前面已有“which”,“wh”行 关系副词：在句中作状语 关系副词=介词+关系代词 why=for which where=in/ at/ on which（介词同先行词搭配） when=during/ on/ in/…… which（介词同先行词搭配） 1. “where”是关系代词,当然也不用“that”引导. By the time when you arrived in London, we had stayed there for two weeks. 到你到达伦敦的时候,我们在那里已经待了两个星期. I still remember the her. 我仍然记得我第一次见到她. Each time when he goes to business trip, he brings a lot of living necessities, such as towels, soap, toothbrush etc. 他每次出差都带来了生活必需品,如毛巾,肥皂,牙刷等其他东西. 3. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时,常用“there is”开头. There is somebody here who wants to talk to you. 这里有人要和你说话. 分作进一步说明,通常是引导词和先行词之间用逗号隔开,将从句拿掉后其他部分仍可成立.

非限制性定语从句

意义： 非限制性定语从句起补充说明作用,缺少也不会影响全句的理解.在非限制性定语从句的前面往往有逗号隔开,如若将非a lovely garden. 我去年买的的房子带着个漂亮的花园. This novel, which I have read three times, is very touching. 这本我已经读过三遍的小说很感人. 3. 非限定性定语从句可将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数,例如： He seems not to have grasped what I meant, which greatly upsets me.他似乎没抓住我的意思,这使我心烦. Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽,这就叫做蒸发. 4. 有时as也可用作关系 5. 在非限定性定语从句中,不能用关在从句中做主语 （1）The boys who are playing football are from Class One. 在踢足球的男孩们是一班的. （2）Yesterday I helped an old man who lost his way. 昨天,我帮助了一个迷路的老人.

whom指人

注意：关系代词“whom”在口语和非正式语体中常用“who”代替,可省略. 如果在从句中做宾语,就用“whom”或“who”. He is the man whom has an English book. 他就是那个有英语书的男人. You just meet the person whom is my friend. 你刚刚见到的那个人就是我的朋友.

whose通常指人也可指物

在定语从句中做定语,表所有. （1）He has a friend whose father is a doctor. 他有一个朋友的父亲是医生. （2）I once lived in a house whose roof has fallen in.我曾经住在一座现在已经倒塌的房子中. “whose”指物时通常以以下结构来代替： （3）What is the ball isa game which is liked by most 颜色是什么.足球是大多数男孩都喜欢的游戏. （4）This is the pen（which）he bought yesterday. 这是他昨天刚买的钢笔.

that指人时

相当于“who”或者“whom”；指物时,相当于“which”当前头有最高级序数词“all”不定代词时必须用“that”. 在定语从句中做主语、表语或者宾语,做宾语时可省略. （5）The number of the people that/who come to visit the city each year rises one million. 每年来这座城市观光的游客数目上升了100万. （6）Where is the man this morning? 今天早上这个男人在哪?

when指时间

在定语从句中做时间状语也可做连接词用. （1）(1) I still remember the day when I first came to the school. (2) The time when we got together finally came.

why指原因

在定语从句中做原因状语. （1）Please tell me the reason why you missed the plane. （2）I don't know the reason why he lookswhen/in which he was going to school he began to know what he wanted when he grew up.