[精]高中英语语法-所有定语从句考点
人教部编版高中英语高中三年所有英语语法考点全总结
人教部编版高中英语高中三年所有英语语法考点全总结专题一定语从句一、关系代词引导的定语从句1、that指人或物在从句中作主语，宾语或表语which指物在从句中作主语，宾语或表语（作宾语时可以省略）who指人在从句中作主语，宾语或表语whom指人在从句中作宾语whose指人或物在从句中作定语as指人或物在从句中作主语，宾语或表语but指人或物在从句中作主语，宾语或表语注意：指物时，whose+名词=the+名词+ofwhich或ofwhich+the+名词2、as的用法（1）常用于下列结构：such…as;so…as;thesame…as;as…as注意：thesame…as表示同一类，不同一个thesame…that表示同一个（2）as与which的区别a、位置不同as可放在主句后，主句前或主句中间；which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用andthis来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：asweknow/asisknowntoall,asweallcansee,ashasbeensaidb efore/above,asmightbeexcepted,asisoftenthecase,一般不能用which代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
二、只用that不用which的情况1、.先行词为all,much,everything,nothing,something,anything,nothing,n one,theone等不定代词时2、先行词被only,any,few,little,no,all,just,very,right等修饰时.3、当先行词是最高级或被形容词最高级修饰时。
4、当先行词是序数词或被序数词修饰时。
[精]高中英语定语从句知识点、难点与考点解析
![[精]高中英语定语从句知识点、难点与考点解析](https://img.taocdn.com/s3/m/69a2702cfab069dc512201a7.png)
高中英语语法重点难点回顾――定语从句用来说明主句中某一名词或代词（有时也可说明整个主句或主句中一部分）而起定语作用的句子叫作定语从句。
一、关系代词引导的定语从句1. 关系代词用来指代先行词是人或物的名词或代词句子成分用于限制从句或非限制性从句只用于限制性从句代替人代替物代替人或物主语Who which that主语Whom which that宾语Whose(=of whom) whose(=of which)例1：This is the detective who came from London.例2：The book which I am reading is written by Tomas Hardy.例3：The desk whose leg is broken is very old.例4：This is the room that Shakespeare was born in.2．关系代词的用法(1) 如果先行词是all, much, anything, something, nothing, everything, little, none等不定代词，关系代词一般只用that，不用which。
例如：All the people that are present burst into tears.(2) 如果先等词被形容词最高级以及first, last, any, only, few, mush, no, some, very等词修饰，关系代词常用that,不用which, who，或whom。
例如：(3) 非限制性定语从句中，不能用关系代词that,作宾语用的关系代词也不能省略。
例如：There are about seven million people taking part in the election, most of whom are well educated.(4) which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。
高中英语语法知识点
高中英语语法知识点高中英语语法知识点专题一：定语从句一、关系代词引导的定语从句1、that 指人或物在从句中作主语，宾语或表语which指物在从句中作主语，宾语或表语(作宾语时可以省略)who指人在从句中作主语，宾语或表语whom指人在从句中作宾语whose指人或物在从句中作定语as指人或物在从句中作主语，宾语或表语but指人或物在从句中作主语，宾语或表语注意：指物时，whose+名词=the+名词+of which或 of which+the+名词2、as 的用法(1)常用于下列结构：such…as; so…as;the same…as; as…as注意：the same…as 表示同一类，不同一个the same…that 表示同一个(2)as与which的区别a、位置不同as可放在主句后，主句前或主句中间;which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用and this来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：as we know/ as is known to all, as we all can see, as has been said before/above,as might be excepted, as is often the case, 一般不能用which代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
二、只用that不用which的情况1、.先行词为 all , much, everything, nothing , something ,anything, nothing, none, the one等不定代词时2、先行词被only, any, few, little, no , all, just , very ,right等修饰时.3、当先行词是最高级或被形容词最高级修饰时。
高中英语知识点归纳语法定语从句的用法与变化
高中英语知识点归纳语法定语从句的用法与变化高中英语知识点归纳：语法定语从句的用法与变化一、概述语法定语从句是指用来修饰名词或代词的从句，起到限定或补充说明的作用。
它主要由关系词引导，可以出现在句子的任何位置。
二、关系词的选择1. 引导主语从句的关系词：who, whom, whose, which, that例如：- Do you know the girl who won the singing competition yesterday?- The book that you borrowed from me is very interesting.2. 引导宾语从句的关系词：who, whom, whose, which, that, where, when, why例如：- Can you tell me the reason why she didn't come to the party?3. 引导表语从句的关系词：who, whom, whose, which, that例如：- The person who is sitting over there is my best friend.4. 引导定语从句的关系词：whose, which, that, where, when例如：- This is the house whose roof was blown off in the storm.- Do you still remember the day when we went hiking together?三、定语从句的位置定语从句可以出现在句首、句中或句末，具体位置的选择要根据语境和需要来决定。
例如：- The boy who is wearing glasses is my cousin. (句中)- My sister, who is a doctor, works in a hospital. (句末)四、引导词的省略在定语从句中，关系代词作宾语时可以省略，但是关系代词作主语时不能省略。
高一英语重点语法英语笔记--定语从句
高一英语重点语法英语笔记--定语从句定语从句是高中英语第一大语法内容，必需清楚把握。
接下来我为大家整理了高一英语学习的内容，一起来看看吧!高一英语重点语法--定语从句01定语从句基本概念在复合句中，修饰名词或代词的从句叫定语从句。
引导定语从句的词叫关系词。
被修饰的名词或代词叫先行词。
定语从句一般放在先行词的后面。
02定语从句的关系词引导定语从句的关系词有关系代词和关系副词。
常见的关系代词包括that，which，who(宾格whom，全部格whose)，as 等。
关系副词包括where，when，why等。
关系代词和关系副词放在先行词及定语从句之间起连接作用，同时又作定语从句的重要成分。
03定语从句的分类依据定语从句与先行词的关系，定语从句可分为限制性定语从句及非限制性定语从句。
1. 限制性定语从句紧跟先行词，主句与从句不用逗号分开，从句不行省去。
例如：Any man that / who has a sense of duty wont do such a thing.任何有责任感的人都不会做这样的事。
2. 非限制性定语从句主句与从句之间有逗号分开，起补充说明作用，如省去，意思仍完整。
例如：The house,which we bought last month,is very nice.这幢房子很美丽,是我们上个月买的.留意：非限定性定语从句中不能使用关系代词that。
04关系代词的用法1. thatthat既可以用于指人，也可以用于指物。
在定语从句中作主语、宾语或表语，作宾语可省略。
例如：Mary likes music that is quiet and gentle.玛丽喜爱轻柔的音乐。
(that作主语)The coat (that) I put on the desk is blue.我放在桌子上的那件外套是蓝色的。
(that作宾语)2. whichwhich 用于指物，在句中作主语、宾语或表语，作宾语可省略。
专题01定语从句十大考点归纳(清单)-高考英语一轮复习知识清单(全国通用)
专题01 定语从句十大考点（解析版）讲义目录定语从句高考考点细目表P1 考点清单一、关系代词that和which典型用法对比P2 考点清单二、关系代词whose, who, whom典型用法归纳P4 考点清单三、关系副词where典型用法归纳P5 考点清单四、关系副词when典型用法归纳P5 考点清单五、关系副词why 典型用法归纳P6 考点清单六、如何区分先行词作状语还是宾语P6 考点清单七、关系代词as典型用法归纳P7 考点清单八、定语从句“介词+关系代词”结构P8 考点清单九、定语从句中的主谓一致典型用法P9 考点清单十、分割型定语从句及强调句型、名词性从句变式考查P9 分类训练（一）高考真题P10 分类训练（二）模拟试题P11 分类训练（三）单句改错P12 分类训练（四）句式升级（书面表达）P12 分类训练（五）语篇运用（外刊原创）P13 （一）二十四节气之夏至来历及风俗P13（二）英雄猫及时施救心脏病主人P15近年高考真题定语从句考点细目表考点清单一、关系代词that和which典型用法对比要点精讲1：I don’t like the way that/in which you speak to your mum. 我不喜欢你对妈妈说话的方式。
（the way在定语从句充当方式状语）【即时训练】用关系代词that或which填空。
1. I don’t like the way _______you speak to her.2. He is the only man __________ I can find for the work.3. He is no longer the man _________he was five years ago.4. The first English novel __________ I read was Gone With Wind.5. This is one of the most exciting football games _______ I have ever seen.6. John told his parents about the cities and the people _________ he had visited.7.（2014全国I卷）Maybe you leave a habit ________is driving your family crazy.8.（2015全国I卷）I’d skipped nearby Guilin, a dream place for tourists seeking the limestone mountain tops and dark waters of the Li River _________are pictured by artists in so many Chinese paintings.9. (2018全国II卷)The Chinese Ministry of Agriculture finds that between 2005—when the government started a soil-testing program ___ ___ gives specific fertilizer recommendations to farmers---and 2011, fertilizer use dropped by 7.7 million tons.10.（2020全国III卷）Understanding her good intentions, I eat all the food what is provided by Mom with appreciation. （短文改错）【答案与解析】1. that。
高中英语语法复习——定语从句(共45张ppt)
2、先行词：被定语从句修饰的名词或 者代词叫做先行词。定语从句通常 置于它所修饰的成分之后。
eg: The boy who is playing basketball is my younger brother.
3、关系词：引导定语从句的关联词就叫关系 词。
A. 把从句和主句中被修饰的先行词连接在 一起．
2. I think the day will finally come______ air pollution can be put under control. A. that B. which C. when D. as
3. This is the store______ we visited the famous shop assistant. A. where B. there C. that D. which
结构分析： 系词所指代的先行词在句中作 know的宾语。
4. I don’t like the way _____ you speak to her. A. / B. that C. in which D. all A, B and C
特别注意!（5）
在实践中会遇到很多形似定语从句的句子，要 注意定语从句与其它从句的结构上的细微差别, 能够正确区分使用它们.
couldn’t be found.
A. that
B.where C. in which D. in that
The places couldn’t be found.可知关 系词所指代的先行词在句中作主语。
结构分析：
3. This is the reason ______ he has always been eager to know for these years. A. which B. why C. for which D. because He has always been eager to know the reason for these years.可知关
2023年高中英语语法定语从句的用法及考点
2023年高中英语语法定语从句的用法及考点一、定语从句关系词的用法与选择1.关系词的用法关系词分为关系代词和关系副词。
关系代询主要有 that. who.whom.whose. which.as 等，其中who和whom 只用干指人，which 和as 只用干指事物，whose和 that既口生指人也可用于指物，它们在定语从句可用作主语、宦语、表语或定语；关系副词主要有when. where 和why，其中when表示时间，where表地点，why表原因，它们在定语从句中均用作状语：A plane is a machine that can fly.飞机是一种能飞行的机器。
(that植物，在从句中用作主语）I have forgotten everything that I learn t at schoo1.我把学校学的所有东西都给忘了。
that植物，在从句中句作室语The man who lives in that house is my uncle. 住在那座房子里的人是我叔叔。
who指人，在从句中作主语The house whose windows are broken is empty.破了窗户的那座房子是空的。
whose植物，在从句中作定语There are some students whose questions I can't answer. 有些学生提出的问题我回答不了。
whose指人，在从句中作定语He is not such a fool as he looks，他并不像他看起来那么傻。
as指人，在从句作表语2.关系词的选择选择关系词可考虑以下四点：（1）一看先行词的意义，即分清先行词是指人、指物、时间、地点还是原因（如指物时不能用who或whom，指人时通常不用which 等）。
(2）二看关系词的句法功能，即分清关系词是担任什么句子成分，是作主语还是宾语、是作定语还是状语等（如作定语通常用whose，有时也用which；作状语要用when, where, why)。
+语法知识必备：定语从句+课件-2025届高三英语上学期一轮复习专项
which
意为“这一点”或“这件事”等
放在主句之后
As is known to all, great changes have taken place in China. John, as you know, is a famous writer. Tom was late for school again and again, which made his teacher very angry.
【要点巩固】 ①(2024·泸州模拟) In 2016, Zhang was given the Romer-Simpson Lifetime Achievement Award, _w__h_ic_h__is the highest prize in vertebrate palaeontology. ②(2024·汕头模拟) _A_s__Nelson Mandela said, when you speak to a man in a language that he understands, it goes to his head.But when you speak to a man in his mother tongue, it goes to his heart. ③(2024·潮州模拟) The blue whale, weighing more than even the biggest dinosaurs, is the largest animal _t_h_a_t_has ever lived.
【要点归纳】
关系代词 who whom
whose(=of whom/of which)
that which
as
先行词 人 人
关系代词一览表 句法功能
高中英语语法：定语从句知识点
高中英语语法：定语从句知识点在复合句中，修饰某一名词或代词，用作定语的从句叫做定语从句(attributive clause)。
被定语从句所修饰的词叫做先行词(antecedent)。
定语从句必须放在先行词之后。
引导定语从句的关联词有关系代词who、whom、whose、which、that 和关系副词when、where、why等。
一、关系代词和关系副词的功能关系代词和关系副词功能有三个：1）用来引导定语从句，在先行词和定语从句之间起纽带作用，使二者联系起来。
2）关系代词和关系副词可作定语从句的一个成分。
关系代词可作主语、宾语、定语；关系副词可作状语。
3）关系代词和关系副词在从句中代替在他前面的先行词。
1、作主语关系代词在定语从句中作主语时，从句的谓语动词的人称和数应与先行词一致。
All that is needed is a supply of oil.所需要的是大量的油。
（引导词that在句中作主语）The foreigner who visited our class yesterday is from Canada. 昨天到我班来访的外国人来自加拿大。
（引导词who在句中作主语）2、作宾语在定语从句里作宾语的关系代词在口语中常被省去The noodles (that) I cooked were delicious. 我煮的面条美味可口。
（引导词that，可省略）The fish (which) we bought wes not fresh. 我们买的鱼不新鲜。
（引导词which，可省略）3、作定语关系代词whose在定语从句中作定语用。
This is the boy whose mother is our Chinese teacher. 这就是那个男孩，他母亲是我们的语文老师。
注意：关系代词whose在从句中与它所修饰的词一起作介词宾语时，可以跟介词放在主语和从句之间。
The boss in whose company Mr. Kang worked called at the hospital. 老板到医院拜访了康先生，康先生在他的公司里工作。
高中英语定语从句知识点总结
定语从句是高中英语语法中的一个重要知识点，它用于修饰名词或代词，起到限定或说明的作用。
以下是高中英语定语从句的知识点总结：1. 定语从句的基本结构：定语从句通常由关系代词（who, whom, whose, which, that）或关系副词（when, where, why）引导，它们在句子中充当主语、宾语、定语或状语等成分。
2. 关系代词的用法：- who, whom 用于指人，who 在定语从句中作主语或宾语，whom 在定语从句中作宾语。
- whose 用于指人或物，在定语从句中作定语，表示所属关系。
- which 用于指物，在定语从句中作主语或宾语。
- that 既可以指人也可以指物，在定语从句中作主语、宾语或表语。
3. 关系副词的用法：- when 表示时间，在定语从句中作时间状语。
- where 表示地点，在定语从句中作地点状语。
- why 表示原因，在定语从句中作原因状语。
4. 定语从句的省略：当关系代词在定语从句中作宾语时，可以省略。
5. 定语从句与先行词的隔离：当先行词与定语从句之间被其他词隔开时，可以使用“介词+关系代词”的结构。
6. 定语从句的倒装：当关系代词在定语从句中作主语时，有时为了保持句子平衡，可以将定语从句倒装。
7. 定语从句的主谓一致：定语从句中的谓语动词应该与先行词在人称和数上保持一致。
8. 非限制性定语从句：非限制性定语从句与先行词之间用逗号隔开，起补充说明的作用。
以上是高中英语定语从句的知识点总结，希望对你有所帮助。
在学习定语从句时，还需要通过大量的练习来巩固和掌握这些知识点。
高中英语语法基础 ——定语从句知识点总结归纳讲解(附同步练习)(有答案)
高中英语语法基础——定语从句知识点归纳讲解（附同步练习）★先行词：被定语从句修饰的名词或代词叫先行词。
通常情况下，引导词前面的名词即为从句的先行词。
★关系词：引导定语从句的词叫关系词。
也可以称作引导词。
①关系代词：who，whom，which，that，whose，as，在从句内作主语、宾语等名词性成分。
②关系副词：when，where，why在从句内作状语。
（一）. 使用who、whom、which、that的定语从句1. whoThis is the boy who plays basketball very well.This is the teacher who is teaching us English.▲who 指人, 在从句中作主语。
2. whomThis is the boy (whom) I often help.The man is our headmaster (whom) you met just now.I met the girl (whom) you often praise.▲whom 指人,在从句中作宾语, 可省略。
3. whichThis is the farm which keeps many cows.This is the farm (which ) I visit every year.▲which 指事物, 在从句中作主语或宾语,作宾语时可省略。
4. that以上三种情况均可用that。
指人或指物，可作主语和宾语，作宾语时可省略。
（二）. 使用whose的定语从句Do you know the girl whose father is mayor.I used to work in an office whose window faces north.I work in a school whose students are excellent.▲whose 指人或物的所属关系，表示“某人的”或“某物的”。
高中英语语法--定语从句
高中英语语法定语从句一、基本概念定语(形容词性)形容词名词前置定语 后置定语名词，代词，数词，分词，副词，不定式以及介词短语先行词被定语从句修饰的名词、代词称为先行词。
有时是短语或者句子。
关系词who whom whose关系代词 that whichas关系副词 when where why关系词的3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。
五大关系主谓 动宾 副动 介宾 偏正( 先行词与定从中的某个词之间的关系 )The man who is shaking hands with my father is a policeman.The film which they went to see last night was not interesting at all.The reason why he failed the examination is that he had not made any preparation for it.I love a room whose window is large .This is my friend Wang Gang about whom my father told me a lot .二、限制性定语从句和非限制性定语从句三、重/难/考点（一）限制性定语从句只能用that的几种情况1．当先行词是anything, everything, nothing, something, few, all, none, little, some等代词时，或者是由every, any, all, some, no, little, few, much等修饰时（重点：常考！）(1) Have you taken down everything that Mr. Li has said?(2) There seems to be nothing that seems impossible for him in the world.(3) All that can be done has been done.(4) There is little that I can do for you.2. 当先行词被序数词修饰(1) The first place that they visited in London was the Big Ben.3. 当先行词被形容词最高级修饰时(1) This is the best film that I have seen.4. 当先行词被the very= just the, the only , the last修饰时（重点：常考！）(1) This is the very dictionary that I want to buy,(2) After the fire in his house, the old car is the only thing that he owned.当先行词指人时，偶尔也可以用who(3) Wang Hua is the only person in our school who will attend the meeting/5. 当先行词前面有who, which等疑问代词时(1) Who is the man that is standing there?(2) Which is the T-shirt that fits me most?6. 当先行词既有人，也有动物或者物体时(1) Can you remember the scientist and his theory that we have learned?7.当关系代词在定语从句中做表语(1)The village is no longer the one that it used to be 10 years ago.8.当在there be句型中，通常情况下用that，不用which（二）只能用which的情况：1.在非限制性定语从句中；2.若句中有两个定语从句，前一句用了that,后一句当用which。
高中英语知识点归纳定语从句的用法及常见引导词
高中英语知识点归纳定语从句的用法及常见引导词定语从句是高中英语语法中的一个重要部分，它能够用来修饰名词或代词。
本文将对定语从句的用法及常见引导词进行系统的归纳和总结。
一、定语从句的概念和作用定语从句由一个句子引导另一个句子，它的作用是为主句中的名词或代词提供限定信息，进一步描述或解释主句中的内容。
定语从句通常紧跟在被修饰的名词或代词之后。
二、定语从句的引导词1. 关系代词：关系代词用于引导定语从句，并在从句中充当主语、宾语或介词宾语。
常见的关系代词有：who、whom、whose、which、that等。
例如：The boy who is standing over there is my brother.（那个站在那边的男孩是我弟弟。
）2. 关系副词：关系副词用于引导定语从句，修饰地点、时间或原因等。
常见的关系副词有：where、when、why等。
例如：This is the place where we met last time.（这是上次我们见面的地方。
）三、限制性定语从句和非限制性定语从句1. 限制性定语从句：限制性定语从句用来对先行词进行限定，如果去掉它，主句的意思就不完整，从句不能省略。
例如：The book that I bought yesterday is very interesting.（我昨天买的那本书非常有趣。
）2. 非限制性定语从句：非限制性定语从句用来对先行词进行补充或说明，如果去掉它，主句的意思仍然完整，从句用逗号隔开。
例如：Tom, who is my best friend, will come to my birthday party.（汤姆，我的好朋友，会来参加我的生日派对。
）四、定语从句的位置定语从句通常紧跟在被修饰的名词或代词之后，可以放在句首、句中或句末。
例如：The woman who is talking to the teacher is my mother.（正在和那个老师谈话的女人是我妈妈。
高中英语语法复习专题讲解-定语从句(精选.)
高中英语语法复习专题讲解-定语从句一、考点聚焦1、功能：相当于形容词，修饰名词或代词，在句中作定语2、位置：定语从句置于被修饰词之后Those who are willing to attend the party, sign here please.3、先行词：被定语从句修饰的词称为先行词（1）先行词一般是名词和不定代词，如:some-, any-, every-和no与-boy, -thing的合成词；或all、none、any、some、that、those等代词。
数词也可以作先行词，人称代词也同样可作先行词。
（2）先行词与关系词是等量关系。
必须注意两点：①先行词在从句中作主语时，从句谓语动词的数由先行词而定。
This is the place which is worth visiting.②关系词在从句句子中充当了成分，其意思就是先行词的意义，所以在从句中不能重复其意。
There are many places we can visit（them）in China.4、关系词：引导定语从句的都称关系词关系代词：who, whom, which, that, whose, as。
关系副词：when, where, why。
that偶尔也作关系副词。
5、确定关系词的步骤（1）先找关系词，看先行词指的是什么。
（2）看关系词在从句中所充当的成分。
6、在定语从句中，当先行词指物时，下列情况的关系词宜用that而不用which（1）先行词被①形容词最高级②序数词③数词几种词修饰或被④only、any、few、little、no、all、one of等修饰时。
（2）先行词为all、much、little、none、few、one、something、anything等不定代词时。
（3）先行词中既有人又有物时。
He was looking pleasantly at te children and parcels that filled his bus.（4）先行词在主句中作表语关系词在从句中作表语时。
2023年高中英语语法精讲定语从句的考点归纳
2023年高中英语语法精讲定语从句的考点归纳限制性定语从句与同位语从句的区别关系副词引导限制性定语从句中的关系词有跟他们含义相应的先行词，而引导同位语从句时则没有与他们含义相应的先行词。
如：Sorry, I’ve forgot the day when we met for the first time. 抱歉，我记不起我们第一次见面的日子了。
(定语从句，先行词the day 与when含义相应)I’ve no idea when we met for the first time. 我不知道我们第一次是什么时候见面的。
(同位语从句，idea与when没有任何联系)定语从句与时间语状语从句的区别当定语从句的引导词与时间状语的连接词都是when时，定语从句修饰、限制、说明时间名词，只能放在先行词的后面；而时间状语从句说明动作发生的情况，并且可以放在主句的前面。
如：Do you know the time when the class is over? 你知道下课的时间吗？(定语从句)It was already five o’clock when the class was over. —When the class was over, it was already five o’clock. 当课结束时，已经是五点钟了。
(时间状语从句)定语从句与地点状语从句的区别当定语从句的引导词与地点状语的连接词都是where时，定语从句修饰、限制、说明地点名词；而状语从句说明动作发生的地点，where 没有对应的地点名词或代词。
如：This is the place where we used to live a few years ago. 这就是几年前我们常居住的地方。
(定语从句)Let’s go where we can find a better job. 我们到我们能找到更好工作的地方去吧。
(地点状语从句)定语从句与强调句型的区别定语从句对名词或代词的修饰和限制，关系词可能是that, which, as, who, but, 另一方面，句子中的It有所指；而强调句型是对某部分加强语气，而强调语气的连接词只能是that, who，并且句子中的It 没有任何意义；一般比较明显，而有时就难以区别，还需要根据上下文的语境来判断。
高中英语：定语从句语法总结
高中英语：定语从句语法总结定语从句必备知识1．定语从句在复合句中，修饰名词、代词或整个句子的从句叫作定语从句。
定语从句可以分为限制性定语从句和非限制性定语从句。
The boy who is reading needs the pen which you bought yesterday.那个在阅读的男孩需要你昨天买的钢笔。
(定语从句作后置定语)2．先行词被定语从句所修饰的词或句子叫先行词，作先行词的可以是：(1)一个词(通常是名词，也可以是代词)This is the place which is worth visiting.这是值得参观的地方。
He laughs best who laughs last.谁笑到最后，谁笑得最好。
(2)一个短语Many life's problems which were solved by asking family members, friends or colleagues are beyond the capability of the extended family to resolve.许多以前可以通过询问家庭成员、朋友或者同事就能解决的生活问题，是现在的大家庭无力解决的。
(3)一个分句The Greeks assumed that the structure of language had some connection with the process of thought, which took root in Europe long before people have realized how diverse languages could be.希腊人认为，语言结构和思维过程之间存在着某种联系。
这一观点在人们尚未认识到语言的千差万别以前就早已在欧洲扎下了根。
(4)一个完整的句子I found an old man lying on the ground and I took him to hospital in a taxi immediately, which was why I was late that morning.我发现一个老人躺在马路上，我立即乘出租车把他送到了医院，这就是那天上午我迟到的原因。
高中英语语法 定语从句
英语语法定语从句基础知识学习定语从句在复合句中作定语，修饰一个名词或代词，被修饰的名次或代词即现行词。
定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。
关系代词有：which、that、who、whom 、whose 关系副词有：when 、where、why 定语从句的引导词既起引导从句的作用，同时又担任从句的主语、宾语、定语（whose）、和状语，在限制性定语从句中作宾语的关系代词可以省略，在非限制性定从中不可省。
考点一、由which、that引导的定从，在从句中作主语、宾语，指物The building which/that stands near the river is our school.I lost the book (which/that)you gave me.考点二、由who、whom、that、whose在从句中主语、宾语、定语This is the man who/that helped me.I don’t know the man (who/whom/that)you talked with.Nobody wants the house whose roof has fallen in.the roof of which has fallen in.of which the roof has fallen in.考点三、使用关系副词应注意下列几点：1. 关系副词在意义上都相当于一定的介词+ which结构：when = on (in, at, during…) + which where = in (at, on…) + which why = for whichI was in Beijing on the day when (= on which) he arrived.The office where (= in which) he works is on the third floor.This is the chief reason why (= for which) we did it.2. 当先行词是表时间和表地点的词时，一定要注意分析从句的结构，如果缺少主语或宾语时，关系词应该用which 或that; 缺少时间状语或地点状语时，才能用when 或where，I’ll never forget the day when my hometown was liberated.I’ll neve r forget the days which / that we spent together last summer.His father works in a factory where radio parts are made.His father works in a factory which / that makes radio parts.3. when 和where 既可以引导限制性定语从句，也可以引导非限制性定语从句。
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高中英语语法-所有定语从句考点概念定语可以由形容词、名词、代词、分词、不定式以及介词短语等来担任，也可以由一个句子来充当，充当定语功能的句子称为定语从句。
定语从句“三要素”1.先行词：被定语从句所修饰的名词或代词①指人的先行词②指物的先行词★先行词还可以是前面整个句子所叙述的事情。
He has passed the driving test, which surprises all of us. (which替代前面所叙述的事情) 先行词2.关系词：引导定语的词(1)关系词的作用①替代前面的先行词（替代作用）②连接主句和定语从句（连接作用）③在定语从句中作句子成分（成分作用）(2)关系词的分类①标准：根据关系词在从句中做的句子成分种类②关系代词：在从句中做主，宾，表，定（that/which/who/whom/whose/as）③关系副词：在从句中作状语(When/where/why)3.定语从句：用来做定语，修饰限定先行词的句子定语从句的分类1.限制性定语从句：对先行词起限定修饰作用。
He is a teacher who works at our school.2.非限制性定语从句：对先行词起补充说明作用(先行词与定语从句之间有逗号隔开)Beijing, which is the capital of China, is a beautiful city with a long history.比较：He has two sons, who work in the same company.(He has only two sons.)He has two sons who work in the same company.(Perhaps he has two more sons)定语从句的10个难点1.关系代词的省略(限定性定语从句)(1)关系代词在定语从句中作宾语She is the girl (whom / that) I loved before. (可以省略whom/that) (2)关系代词在定语从句中作表语He is no longer the boy (that) he used to be. (可以省略that)(3)关系代词作介词宾语，介词在从句句尾时可以省略Housing price is a problem (that/which) people are interested in.比较：Housing price is a problem in which people are interested.（此时只能用which且不能省略）2.先行词是人(that/who的区别)(1)用that的情况①以疑问词who开头的句子中Who is the man that is shouting there?②关系代词在从句中作表语时She is not the girl that she used to be.③先行词被the very, the right, the only修饰This is the very person that we are looking for.(2)用who的情况①先行词是one, ones, anybody, all, none, those 等Those who want to go to the cinema will have to wait at the gate of the school.②句子中有两个定语从句,一个用了that,另外一个用whoWho is the boy that won the gold medal?③在there be 结构中There are many young men who are against him.④在非限定性定语从句当中Tom, who is my best friend, has gone abroad to study.3.先行词是物(that / which的区别)(1)用which的情况①在非限定性定语从句中She lost the game, which depressed her greatly.②关系词置于介词之后，作宾语The pen with which you write is Jack’s.③先行词是that或定语从句中套定语从句,一个关系词用that,另一个用which. Let me show you the novel that I borrowed from the library which is newly open to us.(2)用that的情况①先行词是不定代词如all, little, few, much,anything, everything, nothing, none, no one等She did all that she could to help us.②先行词被all, every, no, some, little, much, the only, he very, the right，the last等所修饰时This is the very book that I want.③先行词中既有人又有物时She described in her compositions the people and heplaces that impressed her most.④先行词前有序数词或形容词最高级修饰时This is the best book that I have ever read.This is the first film that I’ve seen since I came here.⑤定语从句中套定语从句，其中一个关系词以用which, 另外一个用thatHe built a factory which produced things that had never been seen before.⑥当主句的主语是疑问词which,另一个用thatWho is the person that is standing at the gate?4.As引导定语从句用法(1)As 既可以引导限制性定语从句也可以用于非限定性定句中充当主语，宾语，表语等。
常用于以下句型当中：Such/so….. as…. 像…..一样the same …. as…和…...同样的A computer is so useful a machine as we can use everyday.He is not the same man as he was.(2)引导非限制性定语从句，此时译为“正如，像”等。
可以放在句首，句中或句末。
As I remember, there were a net bar here.Taiwan is an inseparable part of China, as is known to all.★the same as...和the same that...引导定语从句的区别This is the same bike that I lost yesterday. (同一事物)This is the same bike as I lost yesterday. （同类事物）5.关系副词的运用(1)When 在定语从句中做时间状语，先行词为表示时间的time, day等I still remember the day when I first came to Beijing. (when=on which)(2)Where 在定语从句中做地点状语，先行词为表地点的place, spot等Can you tell me the office where he works?(where = in which)(3)Why 在定语从句中做原因状语，先行词只有reason.I don’t want to listen to any reason why you were absent.(why = for which)★关系副词= 相应的介词+ 关系代词★Where引导的定语从句还可以修饰抽象空间的名词如case(情形)，situation, position(位置),stage (阶段)，point（地步）等What are the situations where body language is the only form of communication?在哪些情况下身体语言是唯一的沟通方式。
(此时where = in which)6.几个特殊的先行词(1)way在定语从句中做状语时的三种引导方式that / in which / 不填The way in which / that / 不填 he explains the sentence to us is quite simple.比较：The way which /that/不填he told to us was quite simple.★way在定语中作tell的宾语(2)先行词timetime表示“次数”时，用关系代词that引导定语从句This is the first time that the president has visited the country.time作“一段时间”讲时，应用关系副词whenThis was the time when there were no radios, no telephones or no TV sets★此时when = during which 在..期间(3)先行词reason当在定语从句中作状语时，定语从句的4种引导方式why/for which/that/不填This is the reason why/for which/that/不填 he can not come here.比较：Is this the reason that/which/不填he explained to us for his absence from the conference.★reason 在定语从句中做explain的宾语7.介词+关系代词★该结构的关系代词只有两种即介词+which（指物）介词+whom（指人）★该结构介词的选用原则：(1)根据定语从句中谓语动词的习惯搭配This is the book on which I spent $ 8.This is the book for which I paid $ 8.(2)根据先行词的搭配习惯I remember the days during which I lived there.I remember the day on which I graduated from university.(3)根据整个句子所表达的意思来决定The colorless gas without which we can’t live is called oxygen.(4)英语中为了强调某一名词，不定式前面也可以加上关系代词。