定语从句笔记整理
初中定语从句笔记
初中定语从句笔记定语从句是英语中的一个重要语法结构，它可以用来修饰名词、代词或者名词性短语，起到限定或者补充说明的作用。
掌握定语从句的使用方法对于学习英语来说非常关键。
本文将对初中定语从句进行详细笔记，以帮助同学们更好地理解和运用这一语法结构。
一、什么是定语从句定语从句是由关系代词或关系副词引导的一个从句，用来修饰名词、代词或者名词性短语。
定语从句通常在句中位于被修饰词的后面，用来进一步解释和限定这个词的含义。
二、关系代词引导的定语从句关系代词包括that, who, whom, whose, which等。
它们分别代表不同的对象，根据被修饰词的不同而选择相应的关系代词。
1. 关系代词that关系代词that可用来修饰人和物，用来引导定语从句时可以省略。
例句1: The boy that is standing over there is my brother.翻译: 那个站在那边的男孩是我的弟弟。
例句2: This is the book that I bought yesterday.翻译: 这是我昨天买的书。
2. 关系代词who/whom关系代词who用来修饰人作为主语，而whom用于修饰人作为宾语。
在现代英语中，whom的使用较少，一般情况下我们都用who代替。
例句1: The girl who is playing the piano is my sister.翻译: 正在弹钢琴的女孩是我的妹妹。
例句2: The boy whom I met yesterday is a famous actor.翻译: 我昨天遇见的男孩是一位著名的演员。
3. 关系代词whose关系代词whose表示所有关系，用来修饰人或物。
相对于汉语中的“的”，它在定语从句中通常出现在被修饰词的后面。
例句1: This is the house whose roof is red.翻译: 这是那座屋顶是红色的房子。
初中英语定语从句笔记
定语从句（一）、定义：在复合句中，修饰某一名词或代词的从句叫做定语从句。
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。
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。
如：1) The man who lives next to us is a policeman.2) You must do everything that I do.上面两句中的man和everything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。
引导定语从句的词有关系代词that, which, who(宾格who, 所有格whose)和关系副词where, when、why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（二）、关系代词引导的定语从句1.who指人，在从句中做主语(1)The boys who are playing football are from Class One.(2)Yesterday I helped an old man who lost his way.2. whom指人，在定语从句中充当宾语，常可省略。
(1) Mr. Liu is the person (whom) you talked about.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。
(3) The man who/whom you met just now is my friend.3. which指物，在定语从句中做主语或者宾语，做宾语时可省略(1) Football is a game which is liked by most boys. ( which 在句子中做主语)(2) This is the pen (which) he bought yesterday. ( which 在句子中做宾语)4. that指人时，相当于who或者whom；指物时，相当于which。
定语从句 笔记整理
定语从句授课人：Prof. WoodenPart 1 定语从句定义及概述什么是定语从句？(1)定语从句：在复合句中作定语修饰主句中某一名词或代词的从句叫定语从句。
(2)先行词：被定语从句修饰的词，叫做先行词。
(3)关系词：分为关系代词和关系副词，在从句中担当一定成分。
Eg.I will never forget the girl（先行词）that（关系词）I met yesterday in the street（定语从句）.※定语从句两个必须★先行词在从句中必须作一个成分；★先行词所作的成分必须空缺。
Part 2 关系代词引导的定语从句1. 关系代词that的用法用法：既可指人也可指物，在定语从句中作主语、宾语或表语，作宾语时常可省略。
1)This is the factory that produces cars.(作主语,指物)2)The girl that spoke to me just now is my classmate. (作主语,指人)3)The film (that) we saw yesterday is interesting. (作宾语，指物)※关系代词that的特权和禁区1. 特权：行使特权的条件：（1）限定性定语从句（即从句前无逗号）；（2）介词没有提前。
2. 禁区：有两种情况下，关系代词不会用that,指物时用which；指人时用who/whom。
（1）非限定性定于从句（即从句前有逗号）；（2）介词提前时。
2.关系代词which的用法用法：指物，在定语从句中作主语、宾语或表语，作宾语时常可省略。
1)China is a country which has a long history.(作主语)2)The car (which) my uncle had just bought was destroyed in the earthquake. (作宾语)※只用that 不用which的情况：(1)先行词是最高级或被最高级修饰。
定语从句相关知识点总结
定语从句相关知识点总结一、定语从句的概念。
1. 在复合句中，修饰某一名词或代词的从句叫定语从句。
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。
- 例如：I like the book which/that is very interesting. 其中“book”是先行词，“which/that is very interesting”是定语从句，用来修饰“book”。
二、关系代词的用法。
1. that.- 既可以指人也可以指物，在从句中作主语或宾语。
- 当先行词是all, much, little, something, everything, anything, nothing, none等不定代词时，关系代词用that。
- 例如：All that can be done has been done.（先行词是“All”，关系代词“that”在从句中作主语）- 当先行词被序数词或形容词最高级修饰时，关系代词用that。
- 例如：This is the best film that I have ever seen.（先行词“film”被最高级“the best”修饰，关系代词“that”在从句中作宾语，可省略）- 当先行词被the only, the very, the same等修饰时，关系代词用that。
- 例如：This is the very book that I want.（先行词“book”被“the very”修饰，关系代词“that”在从句中作宾语）2. which.- 指物，在从句中作主语或宾语。
- 例如：The book which/that is on the desk is mine.（“which/that”在从句中作主语）；I like the book which/that you lent me.（“which/that”在从句中作宾语）- 在非限制性定语从句（从句与主句之间用逗号隔开）中，只能用which，不能用that。
定语从句专项笔记总结
定语从句专项笔记总结定语从句专项笔记总结定语从句是由关系代词或关系副词引导的修饰名词或代词的从句，是一种形容词性的从句。
被修饰的名词或代词叫先行词。
1．关系代词：who whom whose which that关系代词引导从句，代替先行词，在从句中充当一个成分，如：主语、宾语、定语等，所以在作主语时，动词的数要和先行词的数保持一致。
who----可作主语、宾语，作主语时，只能用who, who作宾语时是非正式This is the man who helped me.whom---作宾语（正式用法），在介词后只能用whom人 This is the man whom I met in the street yesterday. (正式用法)This is the man who I met in the street yesterday. (非正式用法)whose-who的属格形式，用来指人，也可以用来指物that--- 可代替who ,whomWhich----可作主语，宾语物 eg. The watch which was lost has been found.eg. The fish (which) we bought were not freshthat-------可作主语，宾语eg. The letter that I receive was from my father.当关系代词充当介词宾语时，可以把介词提前，也可以不提前，但是在含有介词的动词固定搭配中，介词只能放在原来的位置eg. This is the teacher whom he worked with .This is the teacher with whom he worked .eg. This is the book for which you asked.This is the book which you asked for.eg. This is the pen which he has been looking for. (look for词组中for不能提前)先行词是人时，常用who而不用that 的情况：a. 关系代词在从句中作主语时，多用who，eg. I will pardon him who is honest.b. 先行词为 all one ones anyone those 等时，eg. All who heard the news were excited.c. 在以there be 开头的句子中，eg. There is a girl who wants to see you.d. 当先行词后有较长的修饰语时，eg. He met a boy in the street yesterday who could speak English fluently.先行词指物的特殊情况：1．必须用that的情况：a. 先行词被序数词、形容词的最高级修饰时，eg. This is the first job that I have taken up.This is the most interesting novel that I have ever read.b. 先行词是不定代词,something somebody nothing anything 等或是 all little much 时，eg. There is something that I want to tell you.c. 先行词被all any every each few little no some much only none both either neither 等修饰时，eg. I have read all the books that you lent me.d. 先行词被the only, the last, the very…修饰时,eg. This is the only method we can use.e. 先行词又有人又有物时，eg. They talked about things and persons that they know in the school.f. 主句以who 或which开头时，eg. Who is the old man that speak to you just now ?g. 先行词指物时，且在There be 句型引导的定语从句中，eg. There is a house that has three windows.h. 关系代词作表语时，eg. China is no longer the place that it used to be.2. 必须用which 的情况：a. 个非限制性定语从句，b. 句子末尾的介词提前时，只能用which,c. 关系代词后有插入语时,eg. This is the book which, as I have told you, will help you to improve your English.（这就是我跟你说过的，能帮你学好英语的那本书。
定语从句的语法知识点
定语从句的语法知识点以下是 6 条关于定语从句的语法知识点：1. 定语从句用来修饰名词或代词呀，就像给它们穿上一件特别的外衣！比如说，“The man who is wearing a blue shirt is my father.”（那个穿着蓝色衬衫的男人是我爸爸），这里“who is wearing a blue shirt”就是定语从句修饰“the man”。
2. 关系代词在定语从句中起关键作用呢！像“that”“which”“who”“whom”“whose”，它们可是连接主句和从句的桥梁哟！比如“She bought the book that I recommended.”（她买了我推荐的那本书）。
3. 定语从句还能分成限制性和非限制性的呢！限制性的就像必需品，不可或缺；非限制性的就像点缀啦！像“He has a sister, who is a doctor.”（他有个姐姐，她是个医生），这里的“who is a doctor”就是非限制性定语从句，起到补充说明的作用。
4. 你知道吗，有时候关系副词也会出现哦！像“when”“where”“why”，它们能表达时间、地点、原因呢！举个例子，“I still remember the day when we met.”（我仍然记得我们见面的那天）。
5. 别以为定语从句只能修饰单个的名词或代词呀，有时候它还能修饰整个句子呢！哎呀，是不是很神奇？“He was late again, which made the teacher angry.”（他又迟到了，这让老师很生气）。
6. 要注意定语从句中的主谓一致问题哟！从句中的动词要和先行词保持一致呢！就像“Those who want to go are here.”（那些想去的人在这里），先行词“those”是复数，所以“want”也用复数形式呀。
总之，定语从句可是英语语法中很重要的一部分呢，掌握了它，会让你的英语更上一层楼！。
英语定语从句知识点总结笔记
英语定语从句知识点总结笔记定语从句是英语中的一个重要语法结构,用来修饰名词或代词,表示一个名词或代词的性质、特征、状态或情况。
下面是英语定语从句知识点的总结笔记:1. 定语从句的位置:定语从句通常放在被修饰词的后面,而且定语从句和被修饰词之间用冒号或连接词隔开。
2. 定语从句的类型:有两种定语从句:关系代词定语从句和关系副词定语从句。
关系代词定语从句用来修饰名词,而关系副词定语从句用来修饰动词、形容词或副词。
3. 定语从句的规则:定语从句有两个基本规则:a. 用来描述名词或代词:定语从句只能用来描述名词或代词,不能用来修饰动词、形容词或副词。
b. 位置规则:定语从句应该放在被修饰词的后面,而且定语从句和被修饰词之间用冒号或连接词隔开。
4. 关系代词的用法:关系代词用来替代名词或代词,例如:a. her:代替名词“她”。
b. him:代替名词“他”。
c. us:代替名词“我们”。
5. 关系副词的用法:关系副词用来修饰动词、形容词或副词,例如:a. because:因为。
b. however:然而。
c. even:即使。
d. never:从来不。
6. 举例说明:例如:a. The book that you have been reading is very interesting.(你所读的那本书非常有趣。
)b. The man who I met in the store is my friend.(我在商店遇到的那个男人是我朋友。
)c. The car that you drive is a beautiful one.(你驾驶的那辆车非常漂亮。
)以上是英语定语从句知识点的总结笔记,希望对你有所帮助。
定语从句笔记归纳1
定语从句笔记归纳11.关系代词that指人/物，作主语时不可省，作宾语一般可省which指物，作主语不可省，作宾语一般可省who指人，作主语；口语中有时也作宾语，作宾语一般可省whom指人，做宾语，一般可省whose指人（sb's）/物（sth's）（多指人，指物时可与of which互换），作定语as指人/物，作主语或宾语2.用that而不用which的情况❶先行词既有人又有物❷主句是which或who开头的特殊疑问句e.g.Which of the books that had pictures was worth reading?❸先行词是序数词或最高级（或前面有序数词/最高级修饰时）❹先行词有every，each，no，some，the only，the very，the last，the same修饰❺先行词是all，much，few，little，any，none，the one（共同点：有“唯一”或“全部”的概念，以致不可选择），something，everything，anything，nothing等不定代词或被这些词修饰时e.g.Tell me everything that you know.❻先行词在主句中作表语，且关系代词在从句中也做表语（此时句子一般有类比的含义）e.g.Our school is no longer the place that it used to be.3.用which而不用that的情况❶非限制性定语从句❷关系代词前有介词时一般用which❸先行词为that或thosee.g.What's that which flashed in the sky just now?❹限制性定语从句中，若有两个定语从句，一句用that，另一句宜用whiche.g.Let me show you the novel that I borrowed from the library which was newly open.4.用who而不用that的情况❶先行词为指人的不定代词，如one，ones，anyone，no one，nobody，anybody，none，all❷there be结构中先行词指人❸先行词为people或those❹一个句子中有两个定语从句，且先行词都指人，一个用that，另一个宜用who注：who可以引导非限制性定语从句5.主谓一致❶关系代词在从句中作主语时，从句谓语动词单复数根据先行词而定（如those who are...）❷one of + 限定词 + 名词复数 + 定语从句（谓语动词用复数）e.g.She's one of my best friends that are studying here.❸the only/the very/the right one of + 限定词 + 名词复数 + 定语从句（谓语动词用单数）6.as若用于such... as...，the same... as...等结构中，不可省（先行词被the same修饰时也可用that，但that表示同一事物）e.g.Such books as I have read are classical works.（我所读过的书都是经典著作）e.g.This is the same pen that I lost yesterday.（这正是我昨天丢的那支钢笔（同一个））e.g.This is the same pen as I lost yesterday.（这支钢笔和我昨天丢的那支一样（同一类））若引导非限制性定语从句代替整个主句，该从句可放在主句前、主句后或主句中间（which引导非限制性定语从句修饰整个主句时只能位于主句后，可译为“这一点”）。
总结定语从句知识点
总结定语从句知识点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（where, when, why）引导，与所修饰的名词或代词构成一个从句。
定语从句的基本结构为：关系代词/关系副词 + 谓语 + 其他成分。
例如：The book (which/that) I bought yesterday is very interesting.在这个句子中，定语从句是“which/that I bought yesterday”，它修饰的是名词“book”，其中关系代词“which/that”引导引导定语从句，而谓语是“bought”，其他成分是“yesterday”。
2. 关系代词的选择在选择关系代词时，需要根据其在定语从句中的成分以及其所修饰的名词的性质来决定。
通常情况下，关系代词的选择有以下几点：（1）指人的名词一般用关系代词 who/whom/whose，指物的名词一般用which/that。
（2）在非限制性定语从句中，只能使用关系代词who/whom/whose/which，而不能使用that。
（3）当关系代词在定语从句中作表语时，要根据所修饰的名词是人还是物，决定使用who/which或that。
例如：The woman who/that is standing over there is my English teacher.The book which/that I borrowed from the library is very interesting.3. 定语从句的位置定语从句通常放在被修饰的名词之后，形成一个完整的句子。
但在特定情况下，定语从句也可以放在被修饰的名词之前。
通常情况下，定语从句的位置有以下几点：（1）定语从句放在被修饰的名词之后时，一般不用逗号与主句分开，因为这种情况下定语从句与主句构成一个紧密结合的句子。
高一英语定语从句笔记
1关系代词（先行词在从句中充当主语或宾语时）：that(人或物)，which（物），who(人)，whom(人)（只作宾语），whose(指代先行词的所有格，可替代人或物)2关系副词（先行词在从句中充当状语时）：where(充当地点)=介词+which; when(充当时间)=介词+which; why(充当原因)=for which 3 whose cover=the cover of which=of which the coverwhose money=the money of whom=of whom the money(后两种很少用)4 介词后的关系代词只能用which指代物，用whom指代人The man to whom you spoke was a scientist.The city in which she lives is far away.5 只能用that 做关系代词的情况1) 先行词为不定代词everything，little，much，all，anything，nothing , none 等。
e.g. Finally, the thief handed everything that he had stolen.2) 先行词前有形容词最高级时，或是最高级时，用that。
e.g. This is the best book (that) I have ever read.3) 先行词被the only，the very，the last ，the same ,the just等修饰时，用that。
e.g. He is the only person that I want to see now.4) 先行词同时指人和指物时，用that。
e.g. We talked about the things and persons that we saw then.5) 先行词被序数词或the last 修饰时，e.g. He was the first person that got to the Mount Emei.6) 先行词是或被不定代词all, few, little, much, every, some, no等修饰时。
英语定语从句知识点总结笔记
英语定语从句知识点总结笔记英语定语从句是英语语法中的一个重要概念，用于修饰名词或代词。
以下是关于英语定语从句的知识点总结笔记：1. 定语从句的定义：定语从句是用来修饰名词或代词的从句，它提供额外的信息来描述或限制先行词的意义。
2. 关系词：定语从句中常用的关系词有：that, which, who, whom, whose, when, where等。
3. 关系词的用法：●that: 用来引导限定性定语从句，修饰人或物。
●which: 用来引导非限定性定语从句，修饰事物。
●who/whom: 用来引导限定性或非限定性定语从句，修饰人。
●whose: 用来引导限定性或非限定性定语从句，修饰所有格。
●when: 用来引导时间定语从句。
●where: 用来引导地点定语从句。
4. 关系词的省略：当关系词在从句中作宾语且在从句中有明确的先行词时，关系词可以被省略。
5. 限定性定语从句与非限定性定语从句：●限定性定语从句是对先行词进行必要的限制和修饰，如果去掉定语从句，整个句子的意思会有所改变。
●非限定性定语从句是对先行词进行附加的说明或补充，如果去掉定语从句，整个句子的意思仍然完整。
6. 先行词的位置：定语从句一般紧跟在先行词之后。
7. 关系副词的用法：when, where和why可以引导时间、地点和原因定语从句。
8. 注意点：●在定语从句中，人用who/whom，物用which/that。
●当关系词修饰整个主句时，用which，而不用that。
●在非限定性定语从句中，关系词前要有逗号。
以上是关于英语定语从句的一些基本知识点总结。
掌握这些知识点，可以帮助你正确理解和运用定语从句，使你的英语表达更加准确和流畅。
定语从句知识记录
定语从句1.相关概念：定语从句是在复合句中充当定语的从句，它的英文是adjective clause,直译是形容词性从句。
定语从句在句子中的作用是限定修饰名词。
2主要知识点：①关系词（关系代词/关系副词）；②关系词的特殊情况；③特殊关系词：介词+ which/whom,whose,as,数量词+of which/whom;④限制性定语从句和非限制定语从句3.内容详解：⑴关系词：知识点补充：①先行词：被定语从句修饰的名词或者代词。
②关系词：引导定语从句的词。
也可充当句子成分。
③as做关系代词引导定语从句。
用在such, same, as等之后引导限制性定语从句。
引导非限制性定语从句时可在主句之前、之后或中间。
且主从句要用逗号隔开。
关系代词：例句：②作主语The girl who/that is wearing white dress is Dora.This is a car which/that was made in China.②引导词作动词的宾语The girl who/whom/that/省略I saw was Jane. The move which/that/省略I watched last night was very interesting. Ella,who/whom I knew in high school, is studying music in France.②引导词作介词宾语The girl to whom I gave coffee smiled at me.=The girl whom I gave coffee to smiled at me.The song to which I am listening was very popular in the 1999s.②引导词作定语I have a friend whose name is Sophia.I bought a bag whose price was very high.关系副词：②在表示方式、时间、地点、原因等的先行词之后，可用that代替when,where,why;相当于介词+which,此时修饰的先行词为the way,the time,the place,the reason等，that一般可省略。
定语从句笔记汇总
定语从句1.概述：在复合句中修饰某一名词和代词的从句叫定语从句。
被修饰的名词和代词叫先行词，通常位于定语从句之前。
引导定于从句的是关系代词that , which , who(whom,whose )和关系副词when, where, why .关系代词和关系副词位于先行词和定语从句之间，它即起连接作用，又充当从句的一个成分，含定语从句的的复合句基本结构为：先行词+关系词+定语从句。
2.种类：定语从句分限制性定语从句和非限制性定语从句，限制性定语从句是句子不可缺少的组成部分，如果没有从句先行词的意义就不明确或不完整，主句也不完整。
非限制性定语从句是主句先行词的补充说明，没有从句不影响主句意思的明确和完整，这种从句用逗号与主句分开，引导非限制性定语从句的关系代词用which ,who ,不用that。
而限制性定语从句的引导词是who , whom ,whose , that ,which , where, when, why 等。
我们这里要讲的是限制性定语从句。
3. 引导词（1）who引导的定语从句：修饰表示人的先行词，在从句中作主语或宾语，作动词宾语时用whom，而且常被省略，在口语中常用who 代替whom。
This is the English teacher who teaches my son . the man who/whom I saw just now is Mr Hu.(2) which 引导的定语从句：修饰表示事物的先行词，在句中充当主语宾语表语。
He is reading a book which is about war . he is reading a book which he bought from London .注意：which与介词搭配使用，介词可放在which之前，若是固定词组一般不可拆开。
The house in which Lu Xun once lived is now is Lu Xun Museum .This is the magazine which you are looking for .(3)that 引导的定语从句：一般情况下，that可以指人或物，可以代替who, whom ,which 在句子中做主语或谓语动词的宾语。
定语从句笔记整理
定语从句一、关系代词1. that既可指人又可指物,在从句中作主语宾语2.which 只指物,在从句中作主语或宾语.3.who/whom 只指人,who在从句中作主语或宾语,而whom只作宾语.4.whose是代词的所有格,既可代人也可代物Eg 1.The letter that/which I received was from my father.2.The doctor whom /who /that you are looking for is in the room.3.Do you know the man whose name is Wang Y u.4.The book whose cover is red is my English book.注：一、关系代词指物时只用that不用which的情况1.先行词为all, everything, nothing, anything , little , much 等不定代词时.Eg Tell me everything that you know2.先行词被very , both , the only , all , no , every , any , little , much , some修饰时. Eg This is the only book that I have.3.先行词被形容词最高级修饰时Eg This is the most beautiful city that I have visited.4.先行词被序数词修饰时Eg This is the last lesson that we have this term.5.先行词既包括人又包括物Eg They talked of things and persons that they remembered in the school.6.主句是以who或which开头的特殊疑问句时Eg Which is the coat that you like best?Who is the man that was talking to you?7. that 常用作表语Eg China is not the country that it used to be.He is not that man that he was.8.有两个定从，其中一个已用which另一个用that.Eg Edison build a factory which produced things that had never been seen before.二、适宜用which的情况1.在从句中作介词的宾语,当介词提前时,只用which,代词在句尾时两者皆可. Eg He found that which he had been looking forThis is the question that/which we have had so much discussion about.This is the question about which we’ve had so much discussion.The chair (which/that) she is sitting on is made of wood.The chair on which she issitting is made of wood.2.在非限定性定语从句中必用which不能用thatThey have invited me to visit their country, which is very kind of them.I said nothing,which made him angry.三、下列情况中多用whoEg One who has nothing to fear dares to tell the truth.Those who want to go to the Great Wall sign up here.Anyone who fails to finish the task should be criticized.There is an old man who wants to see you.The boy that you met last night is the group leader who studies veryhard.二、关系副词1、whereEg 1、This is the school. I used to teach at the school.This is the school where/at which I used to teach.2、What’s the name of the town? We stayed in the town last night.What’s the name of the town where / in which we stayed last night?3、This is the house where I was born.This is the house which/that I was born in.This is the house in which I was born.2、whenEg 1、Tell me the time. The train leaves at that time.Tell me the time when / at which the train leaves.2、July is coming soon. We can go home for a rest in July.July, when / in which we can go home for a rest, is coming soon.3、I’ll never forget the day. I reached the top of Mount Tai on that day.I’ll never forget the day when / on which I reached top of Mount Tai.4、Y ou will have some spare time. Y ou can learn French at home during this time.Y ou will have some spare time when / during which you can learn French at home.3、whyEg I don’t know the reason. He left here for the reason.I don’t know the reason why/ for which he left here.注: The reason why he was late was that her child was ill in hospital.The reason which she gave me was that her child was ill in hospital.4、由as, which 引导的非限定性定语从句，as和which可代整个主句。
定语从句知识点归纳总结
一、定语从句的概念在复合句中，修饰某一名词或代词的从句叫做定语从句。
被定语从句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。
二、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。
关系代词有 that, which, who, whom, whose 等；关系副词有 when, where, why 等。
1. 关系代词的用法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。
which 指物，在定语从句中作主语、宾语。
who 指人，在定语从句中作主语、宾语。
whom 指人，在定语从句中作宾语。
whose 既可以指人也可以指物，在定语从句中作定语。
2. 关系副词的用法when 指时间，在定语从句中作时间状语。
where 指地点，在定语从句中作地点状语。
why 指原因，在定语从句中作原因状语。
三、定语从句的分类1. 限制性定语从句限制性定语从句对先行词起限制、修饰的作用，关系紧密，一般不可缺少，否则主句的意思就不完整。
2. 非限制性定语从句非限制性定语从句对先行词起补充说明的作用，关系较松散，即使去掉，主句的意思仍然完整。
非限制性定语从句与主句之间通常用逗号隔开。
四、定语从句中关系词的选择1. 先行词是人时，关系词用 who/whom/that当先行词在从句中作主语时，用 who/that。
当先行词在从句中作宾语时，用 whom/who/that（在口语或非正式文体中常用 who 代替 whom）。
2. 先行词是物时，关系词用 which/that当先行词在从句中作主语或宾语时，用 which/that。
3. 先行词是人和物时，关系词用 that4. 先行词是时间名词时，关系词用 when当先行词在从句中作时间状语时，用 when。
5. 先行词是地点名词时，关系词用 where当先行词在从句中作地点状语时，用 where。
6. 先行词是 reason 时，关系词用 why当先行词在从句中作原因状语时，用 why。
高三定语从句知识点笔记
1.当定语从句中的主语与先行词相同时，可以将关系代词who/which/that省略。
-正：The boy who is playing basketball is my brother.
→ The boy playing basketball is my brother.
2.当定语从句中的关ห้องสมุดไป่ตู้代词在从句中作宾语时，可以将关系代词who/which/that省略。
以上就是关于高三定语从句的一些知识点的笔记，希望对你有所帮助。祝你考试顺利！
-正：The book which/that I am reading is very interesting.
→ The book I am reading is very interesting.
六、定语从句和定语从句修饰的名词之间的关系
1.先行词和定语从句的关系可以是主动关系、被动关系、所属关系等。
4. whose：
-可以用来修饰人或物，表示所属关系。
-一般用来引导定语从句，修饰名词。
三、定语从句的引导词选择
1.先行词是人时，使用who或that。
-正：The girl who is singing is my friend.
-正：The girl that is singing is my friend.
-错：The girl which is singing is my friend.
2.先行词是物时，使用which或that。
-正：The book which/that is on the table is mine.
-错：The book who/whom is on the table is mine.
定语从句最全面的知识点整理
定语从句最全面的知识点整理定语从句是修饰一个名词或代词的从句，用于进一步说明或限定这个名词或代词的内容。
下面是定语从句的最全面的知识点整理：1.引导词：- 关系代词：who, whom, whose, which, that- 关系副词：where, when, why2.关系代词的用法：- who：指人作主语或宾语- whom：指人作宾语- whose：指人或物作定语，表示所属关系- which：指物作主语或宾语- that：指人或物作主语或宾语，可省略3.关系副词的用法：- where：指地点，在定语从句中作状语- when：指时间，在定语从句中作状语- why：指原因，在定语从句中作状语4.定语从句的结构：-先行词+关系代词/关系副词+句子-关系代词/关系副词在定语从句中担任特定成分5.定语从句的位置：-定语从句一般紧跟在先行词之后，形成一个整体6.先行词的选择：- 指人：who, whom, whose- 指物：which, whose- 指人或物：that7.定语从句的用法和功能：-限定性定语从句：对先行词进行具体的限制和说明，不可省略，不用逗号隔开-非限定性定语从句：对先行词进行额外的补充说明，可省略，用逗号隔开8.定语从句的语法注意事项：-先行词在定语从句中可作主语、宾语、表语或介词的宾语等- 在定语从句中，关系代词充当宾语时，只能用 whom；关系代词充当主语时，只能用 who 或 that-当关系代词作介词的宾语时9.定语从句的省略：-当关系代词在定语从句中作宾语且有前置介词时，可省略-当先行词为所有格时，关系代词可省略10.定语从句的比较级和最高级：-定语从句中修饰的先行词是比较级或最高级时，关系代词与其相应词的用法相同，也可省略。
英语定语从句知识点笔记
英语定语从句知识点笔记英语中，定语从句是用来修饰名词或代词的从句。
在定语从句中，有一个引导词，一般是关系代词（who, whom, whose, that, which）或关系副词（when, where, why）。
1.关系代词的用法：a.who用来指人，作主语或宾语，代替先行词为人的名词。
b.whom用来指人，作宾语，代替先行词为人的名词。
c.whose用来指人或物，表示所属关系，通常用来修饰物或人的名词。
d.that用来指人或物，作主语或宾语，代替先行词为人或物的名词。
e.which用来指物，作主语或宾语，代替先行词为物的名词。
2.关系副词的用法：a.when用来指时间，在定语从句中作时间状语。
b.where用来指地点，在定语从句中作地点状语。
c.why用来指原因，在定语从句中作原因状语。
3.定语从句的基本结构：定语从句的基本结构是先行词+关系词+从句。
例如：The book that I bought yesterday is very interesting. (我昨天买的那本书非常有趣。
)My sister, who is a doctor, lives in London. (我的姐姐是一名医生，住在伦敦。
)4.定语从句的位置：定语从句可以放在先行词的前面或后面，但是要注意先行词和定语从句之间的语法关系。
例如：The girl who is standing over there is my sister. (站在那边的女孩是我的妹妹。
)The house, which was built in 1900, has a lot of history. (那座建于1900年的房子有很多历史。
)5.定语从句的省略：如果定语从句中的主语和先行词中的主语相同，那么在定语从句中可以省略关系代词。
例如：The boy (who) I met yesterday is very nice. (我昨天遇到的那个男孩非常好。
高中定语从句笔记整理
高中定语从句笔记整理
| 高中定语从句注释排序
1，只说明引向定语从句的
1)序数或形容词在最高水平上修改了先行词，要用那个我读的第一部英语小说是查尔斯·狄更斯的《双城记》。
2)所有的，一切的，没有，某事，任何事情，等等。
不定代词用它作为先行词。
当先行词被不定代词修饰时，如全部、每、不、一些、任何、少、多、几等。
4)当既有人又有物时，使用它
我们在谈论我们在学校里记得的人和事。
5)先行词在“唯一”、“非常”、“正确”、“相同”和其他修饰语之前使用。
在疑问词who，which，what，
6)的第一句中，使用
)关系代词仅在定语从句中用作谓语。
他说，中国政府将继续贯彻“一国两制”的方针。
在引入非限制性定语从句时，我们应该使用which。
他为那个女人买了一张火车票，这对她很有帮助。
3.定语从句
1，同中常用...同样地...as，as...as和so...作为结构。
你想买和我一样的钢笔吗？
2，As的意思是在句子中间或句子开头
1)如前所述2)众所周知的
3)众所周知的4)众所周知的5)如下。
当先行词是人称代词或那些、任何人等时，通常使用谁。
当一个句
子有两个定语从句时，一个应该用那个，另一个应该用who。
你昨天在街上遇到的那个人就是那个拦住你钱包的人。
这是我们第一次看英语电影。
我们做这件事的方式非常简单。
注意:what/how不能用于引导定语从句。
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授课人：Prof. WoodenPart 1 定语从句定义及概述什么是定语从句？(1)定语从句：在复合句中作定语修饰主句中某一名词或代词的从句叫定语从句。
(2)先行词：被定语从句修饰的词，叫做先行词。
(3)关系词：分为关系代词和关系副词，在从句中担当一定成分。
will never forget the girl（先行词） that（关系词） I met yesterday in the street （定语从句）.※定语从句两个必须★先行词在从句中必须作一个成分；★先行词所作的成分必须空缺。
Part 2 关系代词引导的定语从句1. 关系代词that的用法用法：既可指人也可指物，在定语从句中作主语、宾语或表语，作宾语时常可省略。
1)This is the factory that produces cars.(作主语,指物)2)The girl that spoke to me just now is my classmate. (作主语,指人)3)The film (that) we saw yesterday is interesting. (作宾语，指物)※关系代词that的特权和禁区1. 特权：行使特权的条件：（1）限定性定语从句（即从句前无逗号）；（2）介词没有提前。
2. 禁区：有两种情况下，关系代词不会用that,指物时用which；指人时用who/whom。
（1）非限定性定于从句（即从句前有逗号）；（2）介词提前时。
2.关系代词which的用法用法：指物，在定语从句中作主语、宾语或表语，作宾语时常可省略。
1)China is a country which has a long history.(作主语)2)The car (which) my uncle had just bought was destroyed in the earthquake. (作宾语)※只用that 不用which的情况：(1)先行词是最高级或被最高级修饰。
This is the best book that I have ever read.(2)先行词是序数词或被序数词修饰。
The first book that I bought was about how to learn English.(3)先行词是all, much, little, none, few 等不定代词或由some, any, every, no等词构成的复合代词时）I did all that I could do at that time.There was little that the doctor could do for the patient.(4)当先行词被the only, the very修饰时。
The only thing that he can do is to say sorry to her.(5)先行词既有人又有物。
Do you know the things and persons that they are talking about?(6)主句已有疑问词who/ which时。
Which is the book that you like?Who is the woman that was praised at the meeting?Which is the T-shirt that fits me most?(7)当先行词在主句中作表语，而关系词在从句中也作表语时。
He is no longer the man that he was ten years ago.※只用which不用that引导定语从句的情况：(1)当关系代词前有介词时。
A desert is a great plain in which nothing will grow.(2)引导非限制性定语从句时。
The students was late for class 7 times a week, which made her teacher mad.(3)一个句子中有两个定语从句时，为避免重复，一个用that，另一个宜用which。
(4)当先行词本身是that时。
That which I had known about made them surprised.3.关系代词who的用法用法：指人，在定语从句中作主语、宾语或表语，作宾语时常可省略。
1)I know the man who spoke to you just now.(作主语)2)She is not the girl who she was.(作表语)4.关系代词whom的用法用法：指人，who的宾格，在定语从句中作宾语，常可省略，在口语中可用who或that代替。
1)Here is the man (whom) you are looking for.2)The woman (whom) you saw just now is our English teacher.※关系代词who和whom的选择Mr. Smith is the very man who/whom you are looking for.I have a friend who likes listening to classical music.Is that the man with whom you arrived yesterday?5. 关系代词whose的用法用法：可指人，也可指物，在定语从句中作定语。
1)This is the scientist whose name is known all over the world.(指人)2)The room whose windows face the east is mine. (指物）※关系代词whose的选择The man whose wallet was stolen called for the police for help.The boy whose father is a teacher has been admitted to Oxford University.The house whose windows are mostly broken belongs to my uncle.The tree whose branches are basically bare dates back to 200 years ago.6.关系代词as的用法用法：既可指人，也可指物，在定语从句中作主语、宾语或表语。
它常用在the same…as…,such…as…,as…as…等句型中,as不能省略。
1)Such teachers as know Tom think him bright.(指人，作主语)2)I’ll buy the same dictionary as you have.(指物，作宾语)※关系代词as的选择(1)当先行词中有so, such等修饰语时；如：This is so good a book as I can hardly tear myself away from.Never promise such things as you can’t achieve.This is so good a movie __as__we all wish to see.This is so good a movie __it__ we all wish to see it.(2)当定语从句置于句首时；如：As is known to all, the earth travels around the sun once every year.As we had expected, the students who had cheated in the exams were punished.(3)当先行词中有the same 修饰时，有时用that也有时用as来引导定语从句。
二者意思稍有不同。
如：This is the same shirt as I wore yesterday. (这件衬衣和我昨天穿的那件一样。
意思是说并不是同一件。
)This is the same shirt that I wore yesterday. (这是我昨天穿的那件衣服。
同一件衣服。
)The students in New York are using the same textbooks as we are using.※关系代词的省略有两个条件：(1)限定性定语从句； (2)作宾语或表语。
.Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ________ don’t. （2006北京高考）A. who ; 不填B. 不填 ; whoC. who ; whoD. 不填; 不填Part 3 关系副词引导的定语从句关系副词先行词所指在句中所作成分When 时间时间状语where地点地点状语why原因原因状语※特别提醒：when, where既能引导限定性定语从句，也能引导非限定性定语从句，而why 通常引导限定性定语从句。
如：That is the day when he got married.That is the time when all of us lived together as a family.That is the factory where I used to work.That is the hospital where my son was born ten years ago.That is the reason why he was fired.(1)表示时间的先行词除了time之外，还有：day, morning, afternoon, evening, night, week, month, year等；(2)表示地点的先行词除了place之外，还可以是desk, table, spot, room, house, school, street, town, country等。
(3)表示原因的先行词一般只有reason一个。
1.关系副词使用的几种变化1)关系副词通常也可以用“that+介词后置”代替或省略；2_在正式文体中，也可以使用“介词+which”的结构。
That is the river where I used to swim. (关系副词)That is the river that I used to swim in. (that +介词后置)That is the river I used to swim in. (省略)That is the river in which I used to swim. (介词+which)2.介词+which结构中的介词选择问题1)介词与先行词之间的搭配关系；I still remember the time when (at which) I first became a high school student.There are several areas in the city where (in which) you can buy clothes in fashion.2)介词与从句中谓语动词的搭配关系。