初中英语定语从句语
初中定语从句语法讲解
初中定语从句语法讲解初中定语从句是指在句子中用来修饰名词或代词的从句。
定语从句通常由关系代词（如who, whom, whose, which, that）或关系副词（如when, where, why）引导，它们在从句中充当名词的成分。
下面是对初中定语从句的语法讲解。
一、关系代词引导的定语从句关系代词who, whom, whose, which, that引导的定语从句分别修饰人或物，并在从句中充当主语、宾语、定语或表语的成分。
1. 关系代词who/whomwho用来指人，在定语从句中作主语；whom用来指人，在定语从句中作宾语。
例句：- I have a friend who is a doctor.（我有一个朋友是医生。
）- The man whom we met yesterday is my father's friend.（我们昨天遇到的那个人是我爸爸的朋友。
）2. 关系代词whosewhose用来指人或物，在定语从句中作定语，表示所属关系。
例句：- This is the girl whose bag was stolen.（这是那个被偷包的女孩。
）- The house whose roof is red is mine.（那座屋顶是红色的房子是我的。
）3. 关系代词whichwhich用来指物，在定语从句中作主语、宾语或定语。
例句：- I bought a book which is very interesting.（我买了一本很有趣的书。
）- The pen which I lost was a gift from my friend.（我丢失的那支笔是我朋友送的礼物。
）4. 关系代词thatthat用来指人或物，在定语从句中作主语、宾语或定语。
that可以用来替代who, whom, which。
例句：- The girl that is wearing a red dress is my sister.（穿红裙子的那个女孩是我妹妹。
初中英语知识点归纳定语从句的运用
初中英语知识点归纳定语从句的运用初中英语知识点归纳——定语从句的运用定语从句（Adjective Clause）是英语语法中一个重要的部分，它可以用来修饰名词或代词，对名词或代词进行进一步的说明或者限定。
正确运用定语从句能够让我们的表达更加准确、清晰。
下面将归纳总结初中英语中定语从句的运用。
一、定语从句的引导词定语从句通常由引导词引导，根据引导词的不同可以分为以下几种情况。
1.关系代词（Relative Pronouns）:- 主格：who, whom, that, which- 宾格：whom, that, which- 所有格：whose, of which2.关系副词（Relative Adverbs）:- 地点：where（在某地）- 原因：why（原因）- 方式：how（方式）二、关系代词的使用关系代词引导的定语从句用来修饰人或物，并且在从句中充当句子成分。
1. 主格关系代词- who用来修饰人，做主语或者宾语。
例句1：The girl who is standing there is my sister.（那个站在那里的女孩是我的妹妹。
）例句2：I met the man who you talked about yesterday.（我见到了你昨天谈论的那个男人。
）- which用来修饰物，做主语或宾语。
例句1：The book which is on the table is mine.（在桌子上的那本书是我的。
）例句2：I lost the pen which you gave me.（我丢了你给我的那支笔。
）2. 宾格关系代词- whom用来修饰人，在从句中做宾语。
例句1：I have a friend whom I trust.（我有一个我信任的朋友。
）例句2：She met a boy whom she fell in love with.（她遇到了一个她爱上的男孩。
）- that用来修饰人或物，在从句中做宾语。
初中英语语法——定语从句用法总结归纳
初中英语语法——定语从句用法总结归纳定语从句是一种引导句，用来修饰主句中的其中一元素，它可以放在
句子的末尾也可以放在句子的中间，它可以表示人或物的属性、行为，也
可以表示特定的时间、地点，其可以紧挨主语或主句元素。
关于定语从句
用法，可以总结如下：
一、定语从句的关系词
1. 一般情况下，用that 或which来引导定语从句。
2. 当定语从句修饰人的时候，用who或whom来代替that或which。
二、定语从句的排列方式
1.无论是放在句首、句中还是句末，定语从句的顺序是：关系词+主
语+谓语+其他成分。
2.在句尾，定语从句可以省略关系词，但同时必须有清楚的上下文逻
辑关系，以保证语意的正确表达。
三、定语从句使用的特殊情况
1. 当定语从句改变主句的主语时，要使用as 引导定语从句。
2. 当定语从句修饰不明确的物体时，可以用whatever, whichever, who或whom来引导定语从句。
3. 当定语从句的内容被省略时，可以用all, some, any, none, little, few, much, many等来引导定语从句。
初中英语语法-英语从句总结
初中英语语法总结（从句）英语从句三大类型按一般说法，可分为三大类14种从句。
一,名词性从句1主语从句Whether it’s right or not remains to be seen。
2宾语从句I wonder whether it's right or not.3同位语从句This is a question whether it's right or not. 4表语从句The question is whether it's right or not。
二，定语从句1限定性定语从句She is the student who can speak English well。
2非限定性定语从句She is the student, who can speak English well。
三,状语从句1时间状语从句The fact will come out when he comes here。
2地点状语从句You can go wherever you like。
3原因状语从句Pay more attention to your lessons because you are astudent。
4方式状语从句He walks as if he were a king.5目的状语从句She went to Japan so that she could learn Japanese well. 6结果状语从句She went to Japan so that she learned Japanese well.7条件状语从句I will understand it if he tells me.8让步状语从句He knows a lot though he is little.1．定语从句There are some old books in the box.The boy dressed in blue is from America。
初中英语语法专题—定语从句讲解
初中英语语法专题—定语从句讲解一、什么是定语从句？定语从句是用来修饰名词或代词的从句。
它通常紧跟在被修饰的名词或代词后面，并对其进行进一步的说明或限制。
二、引导定语从句的关系词引导定语从句的关系词主要有：that, which, who, whom, whose, when, where等。
- that用于修饰物，常用来引导限制性定语从句；- which用于修饰物，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；- who用于修饰人，常用来引导限制性定语从句；- whom用于修饰人，在非正式情况下，常省略为who，也可以引导非限制性定语从句；- whose表示所属关系，修饰人或物；- when表示时间，在定语从句中用来引导时间状语从句；- where表示地点，在定语从句中用来引导地点状语从句。
三、定语从句的位置和用法定语从句可以位于句首、句中或句尾，用来修饰名词或代词。
它可以进一步说明名词的性质、特征、来源等。
以下是一些示例：1. The book that you borrowed from me is very interesting.that you borrowed from me is very interesting.你从我这里借的那本书非常有趣。
2. The girl, who is wearing a red dress, is my sister.who is wearinga red dress, is my sister.那个穿红裙子的女孩是我的妹妹。
3. The city where I was born is very beautiful.where I was born is very beautiful.我出生的城市非常美丽。
4. I have a friend whose father is a doctor.whose father is a doctor.我有一个朋友，他的父亲是医生。
初中英语定语从句语法及考点归纳
初中英语定语从句语法及考点归纳定语从句是英语中一个非常重要的语法结构，它可以用来修饰名词、代词等，在句子中起到限定、补充、说明的作用。
本文将对初中英语中的定语从句语法进行归纳，并列举一些常见的考点。
一、定义及基本结构定语从句是由关系词引导的从句，在从句中修饰先行词。
关系词常见的有：that, which, who, whom, whose, when, where等。
定语从句的基本结构：关系词 + 主语 + 谓语 + 其他成分例如：1. The pen that I bought yesterday is very expensive.2. The book which is on the table is mine.3. David is the person who helped me.二、关系代词和关系副词的用法区别1. 关系代词用来代替先行词，并在从句中充当成分。
- that: 用来代替人或物，作主语或宾语，指代整个句子或先行词是不定代词、序数词、all, few, little, much, no, some, any等。
- which: 用来代替物，在从句中作主语或宾语。
- who: 用来代替人，在从句中作主语。
- whom: 用来代替人，在从句中作宾语。
- whose: 用来表示所属关系，在从句中修饰名词。
- when: 用来代替时间，在从句中作状语。
- where: 用来代替地点，在从句中作状语。
2. 关系副词用来引导定语从句，并在从句中充当状语。
- when: 用来引导时间状语从句。
- where: 用来引导地点状语从句。
- why: 用来引导原因状语从句。
三、定语从句的特殊情况1. 关系代词和关系副词可以省略。
例如：- The book (which/that) he bought is interesting.- This is the place (where) we met last time.2. 关系代词在从句中做宾语时可以省略。
英语作文定语从句万能句子初中
英语作文定语从句万能句子初中Adjective Clauses: A Guide for Middle School Students。
Adjective clauses, also known as relative clauses, are an important part of English grammar. They provide additional information about a noun in a sentence and help to make our writing more descriptive and precise. In this guide, we will explore the various types of adjective clauses and provide you with some useful sentence patterns to improve your writing skills. So, let's dive in!1. Defining Adjective Clauses:Defining adjective clauses provide essential information about a noun. They cannot be removed from the sentence without changing its meaning. These clauses are introduced by relative pronouns such as "who," "whom," "that," or "which." For example:The girl who is sitting next to me is my best friend.The book that I borrowed from the library is very interesting.2. Non-Defining Adjective Clauses:Non-defining adjective clauses provide additional, non-essential information about a noun. They are separated from the main sentence by commas and can be removed without altering the meaning of the sentence. These clauses are introduced by relative pronouns such as "who," "whom," "which," or "whose." For example:Mary, who is an excellent dancer, won the competition.My new laptop, which I bought last week, is very fast.3. Sentence Patterns with Adjective Clauses:Now, let's look at some sentence patterns that commonly include adjective clauses:a) Subject + Verb + Adjective Clause:The dog that is barking loudly belongs to my neighbor.b) Subject + Verb + Object + Adjective Clause:She bought the dress that she saw in the store yesterday.c) Subject + Verb + Preposition + Object + Adjective Clause:The house in which they used to live is now for sale.d) Subject + Verb + Adjective + Adjective Clause:The movie was so boring that I fell asleep halfway through.4. Tips for Using Adjective Clauses:To use adjective clauses effectively, keep the following tips in mind:a) Use the correct relative pronoun: "who" for people, "which" for things, and "that" for both.b) Omit the relative pronoun when it is the object of the clause:The girl (who/whom) I met yesterday is my new classmate.The car (which/that) he bought is very expensive.c) Use "whose" to show possession:The man whose car was stolen reported it to the police.d) Avoid using ambiguous pronouns:I saw a dog chasing a cat, which was very scary. (Which one was scary, the dog or the cat?)。
初中英语语法——定语从句
初中英语语法——定语从句定语从句定语从句在句中做定语，修饰一个名词或代词，有时也可以修饰部分或整个句子。
被修饰的名词，词组或代词即先行词。
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：who。
whom。
whose。
that。
which。
as。
关系副词有：when。
where。
why。
how。
关系代词和关系副词放在先行词和定语从句之间，起连接作用，同时又可做定语从句的一个成分。
当关系代词做宾语时可以省略。
定语从句中的谓语动词必须在人称上和数量上和先行词保持一致。
定语从句分为限制性定语从句和非限制性定语从句。
1、关系代词引导的定语从句1) who。
whom。
that这些词代替的先行词是人的名词或代词，在从句中所起作用如下：Is he the man who/that wants to see you?（who/that在从句中作主语）He is the man whom/ that XXX在从句中作宾语）2) whose用来指人或物，（只用作定语，若指物，它还可以同of which互换），例如：Please pass me the book whose (of which) cover is green.3) which。
that它们所替代的先行词是事物的名词或代词，在从句中可作主语、宾语等，比方：A prosperity which / that had never been XXX在句中作宾语）The package (which / that) you are carrying is about to come unwrapped。
(which / that在句中作宾语)关系代词that和which都可以指物，that和Who都可以指人，其用法区别：不用that的情况：a)在引导非限定性定语从句时错)The tree。
that is four hundred years old。
初中英语知识点归纳定语从句的特殊用法
初中英语知识点归纳定语从句的特殊用法定语从句是英语中常用的修饰句子中名词或代词的句子，它能够进一步明确名词或代词的特征或限定范围。
除了常见的定语从句用法外，还存在着一些特殊的用法。
本文将对初中英语中定语从句的特殊用法进行归纳和总结。
1. 关系副词作为引导词：在定语从句中，关系副词“when”“where”“why”用于引导时间、地点、原因的定语从句，分别表示“在……的时候”、“在……的地方”和“因为……”的意思。
例如：- The day when we met was unforgettable.（我们相遇的那一天是难以忘怀的。
）- This is the hotel where we stayed last summer.（这是我们去年夏天住的酒店。
）- I don't understand the reason why he left.（我不明白他离开的原因。
）2. 关系代词被省略：当定语从句中的关系代词在从句中作宾语，并且在主句中已经有宾语时，可以将定语从句中的关系代词省略。
例如：- The book (which/that) I bought yesterday is very interesting.（我昨天买的那本书非常有趣。
）- The girl (who/that) we saw just now is my classmate.（我们刚才见到的那个女孩是我的同学。
）3. 定语从句修饰不定代词：定语从句还可以修饰不定代词，如“something”、“anything”、“nothing”、“someone”、“anyone”、“no one”等。
例如：- Is there anything (that) I can do for you?（有什么事我可以帮你吗？）- He doesn't know anyone (who/that) can speak French.（他不认识会说法语的人。
初中英语定语从句(全,含练习及答案解析)
（一）定语从句的概念定语从句：一个简单句跟在一名词或代词后（先行词）进行修饰限定，就叫做定语从句。
在主句中充当定语成分。
被修饰的词叫先行词。
定语从句不同于单词作定语的情况，它通常只能放在被修饰的词（即先行词）之后。
定语从句由关系词（关系代词、关系副词）引导，关系代词、关系副词位于定语从句句首。
因此，Handsome boy = the boy who is handsomeBeautiful flower = the flower which is beautiful被定语从句修饰的词叫先行词，引导定语从句的词叫关系词。
关系词可分为关系代词（who, whom, whose, which, that)和关系副词(when, where, why)关系词都充当从句的某个成分，它所替代的相应成分应省去。
在定语从句中，当who, which, that作主语时，谓语的单复数应与先行词保持一致。
关系词常有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。
定语从句分为限制性定语从句和非限制性定语从句。
非限制性定语从句与先行词的关系不如限制性定语从句与先行词的关系紧密，没有它，主句的意思也清楚，因此用逗号隔开。
关系词在非限制性定语从句中的用法与在限制性定语从句中的用法基本一样。
（二）关系代词用法作用例句关系代词指示对象That人/物主（宾）The student that answered the question was John.回答问题的学生是约翰。
The book （that）you lent me was interesting.你借给我的那本书很有趣。
Which物主（宾）Football is a game which is liked by most boys. 足球是大多数男孩都喜欢的游戏.This is the pen (which) he bought yesterday. 这是他昨天刚买的钢笔.Who人主（宾） A doctor is a person who looks after people's health.The man（who）you met just now is my friend. Whom人（宾）The man（whom）you met just now is my friend. 你刚刚见到的那个人就是我的朋友.Mr. Ling is just the boy（whom）I want to see. 凌先生恰巧就是我想见的那个男孩.Whose人.物定He has a friend whose father is a doctor.Please pass me the book whose (of which) cover is green.注意一：1）介词后面的关系词不能省略。
初中英语 九年级定语从句语法精讲
人教版九年级英语定语从句语法知识精讲Unit 9 Grammars 定语从句※一.定语从句的定义及结构1.定义：在复合句中，修饰某一名词或代词的从句叫定语从句。
被定语从句修饰的名词或代词叫先行词，定语从句必须放在先行词的后面。
2.定语从句的基本结构：“先行词+关联词+定语从句。
”定语从句的作用：定语从句在复合句中对先行词起修饰、限制的作用，相当于汉语中的“…的”结构。
※二.定语从句的分类根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：从句紧跟先行词，主句与从句不用逗号分开，从句不可省去。
2.非限制性定语从句，主句与从句之间有逗号分开，定语从句起补充说明作用，如果省去，意思仍完整。
※三.定语从句的引导词(也叫关联词或关系词）定语从句的引导词，放在先行词及定语从句之间起连接作用，同时又代替先行词在从句中充当句子的某一成分。
1.定语从句的引导词分为：关系代词和关系副词●常见的关系代词有：that, which，who，whom，whose●关系副词有：where，when，why等。
2.引导词的作用：⑴关系代词在从句中作主语，宾语和定语；⑵关系副词在从句中作状语关系代词用法巧记歌that指人也指物，主语宾语都能用which指物不指人，主语宾语它也能who和whom都指人，主语宾语要分清whom只作宾who宾、主它都行whose whose 真管用，指人指物它都行只作定语要记清关系代词和关系副词的用法见下表：①Mary likes music (that is quiet and gentle).玛丽喜欢轻柔的音乐。
（that 作主语）②The coat is blue.我放在桌子上的那件 用于指物，在句中作主语或宾语，作主语不可省略，作宾语可位于我们昨天晚上看 用作主语，whom 作宾语。
在口语中，。
例如：经常在Li Ming is talking to ？正在与李明谈话的老师是谁？（作宾语）㈡关系副词的用法1. whenwhen指时间，其先行词表示时间，在句中作时间状语。
初中英语中的定语从句详解
初中英语中的定语从句详解在初中英语学习中，定语从句是一个重要的语法结构。
它可以帮助我们更准确地描述人或事物，并且丰富我们的语言表达。
在本文中，我们将详细解析定语从句的使用方法和注意事项。
一、什么是定语从句？定语从句是用来修饰名词或代词的从句，用来进一步说明或限定名词的特征。
它通常由关系代词或关系副词引导，关系代词有who、whom、whose、which和that，关系副词有where、when和why。
例如，我们可以说：“The girl who is wearing a red dress is my sister.”（穿红裙子的女孩是我妹妹。
）这里的定语从句“who is wearing a red dress”修饰了名词“girl”，进一步说明了这个女孩穿着红裙子。
二、定语从句的引导词和用法1. 关系代词的用法a) who和whom：用来修饰人，who用作主语，whom用作宾语。
例如，“The boy who is playing basketball is my friend.”（正在打篮球的男孩是我的朋友。
）b) whose：用来修饰人或物，表示所属关系。
例如，“The book whose cover is torn belongs to me.”（封面破损的书是我的。
）c) which：用来修饰物，也可以修饰人。
例如，“The car which is parked outside is mine.”（停在外面的车是我的。
）d) that：既可以修饰人也可以修饰物，通常在口语和非正式写作中使用。
例如，“The movie that we watched last night was amazing.”（我们昨晚看的电影很棒。
）2. 关系副词的用法a) where：用来修饰地点。
例如，“I still remember the place where we first met.”（我仍然记得我们第一次见面的地方。
初中英语作文定语从句万能句子大全
初中英语作文定语从句万能句子大全English: In order to effectively use adjective clauses (定语从句) in middle school English compositions, it is important to have a variety of sentence structures at our disposal. One useful technique is to use relative pronouns like "who," "which," and "that" to introduce the adjective clause and provide additional information about the noun. For example, "The girl who won the competition was very talented." Another option is to use relative adverbs like "where," "when," and "why" to give more details about the time, place, or reason. An example would be, "The restaurant where I had dinner yesterday was fantastic." Additionally, using non-defining relative clauses, set off by commas, can provide extra descriptive information without changing the essential meaning of the main clause. For instance, "Jane, who is my best friend, loves to read books." Furthermore, it is important to pay attention to subject-verb agreement when using adjective clauses. If the relative pronoun is the subject of the clause, the verb should agree with it. Lastly, it is essential to avoid adding too many adjective clauses in a sentence as it can make the sentence confusing and challenging to read. By mastering these techniques, we caneffectively employ adjective clauses in our writing, adding depth and complexity to our compositions.中文翻译: 为了在初中英语作文中有效地使用定语从句，我们需要掌握多种句子结构。
初中英语定语从句语法及考点归纳
定语从句定语从句（Attributive Clauses）通常皆放在它所修饰的名、代词之后，这种名、代词就叫做先行词。
引导定语从句的关联词为关系代词和关系副词。
1.关系代词引导的定语从句在下面几种情况下必须用关系代词that引导定语从句:(1) 先行词是不定代词all ,few, little, everything ,nothing anything, none等。
如：Is there anything that you want to buy in the shop?你在商店里有什么东西要买吗？(2) 先行词被序数词或形容词最高级所修饰,或本身是序数词、基数词、形容词最高级。
如：This is the best movie I’ve ever seen.这是我看到过的最好的一部电影。
(3) 先行词被all, any ,every ,each, few, little, no ,some等修饰时。
如：I have read all the books(that )you gave me.我读了你给我的所有的书。
(4) 先行词被the only , the every ,the same, the last 修饰时。
如：He is the only person that I want to talk to .他就是我要谈话的那个人。
(5) 当并列的两个先行词分别表示人和物时。
如：They are talking about things and persons that they remembered. 他们在谈论他们所能回忆起来的人和事。
(6) 为避免重复，在以who或which开头的特殊疑问句中。
如：Who is the girl that is crying ?正在哭泣的那个女孩是谁？Which of the books that borrowed from the library is yours从图书馆借的哪一本书是你的？(7) 用作关系代词，修饰表示时间的名词如day, time , moment 代替when 。
初中英语定语从句句子摘抄
初中英语定语从句句子摘抄当然可以，以下是一些含有定语从句的初中英语句子：1.The book that I borrowed from the library is very interesting.（我从图书馆借的那本书很有趣。
）2.The boy who is playing basketball is my younger brother.（正在打篮球的那个男孩是我弟弟。
）3.The girl whose hair is red is my classmate.（红头发的那个女孩是我的同班同学。
）4.The house that has a big garden is for sale.（有一个大花园的房子正在出售。
）5.The man whom I met at the party last night is a famous actor.（我昨晚在聚会上遇到的那个人是一位著名的男演员。
）6.The car whose windows were broken was mine.（窗户被打破的那辆车是我的。
）7.The teacher who is giving the lesson is very strict.（正在上课的那位老师很严格。
）8.The letter that I received yesterday was from my parents.（我昨天收到的那封信是我父母写的。
）9.The student whose backpack is lost is very upset.（背包丢失的那个学生非常难过。
）10.The restaurant that serves delicious food is always crowded.（提供美味食物的那家餐厅总是很拥挤。
）。
初中英语知识点：定语从句
中考英语定语从句讲解一、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；被定语从句所修饰的词叫做先行词。
如：1) The man who lives next to us is a policeman. 2) You must do everything that I do.引导定语从句的词：关系代词that, which, who(宾格who, 所有格whose) 关系副词where, when、why 关系词的作用：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。
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。
(2) 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。
在宾语从句中做主语或者宾语，做宾语时可省略。
初中英语作文定语从句万能句子大全
初中英语作文定语从句万能句子大全A defining relative clause gives essential information about the noun it refers to, while a non-defining relative clause gives additional information that is not necessary for understanding the meaning of the sentence. Relative clauses are used to provide more details about a person, place, thing, or idea in a sentence. In English grammar, relative clauses are introduced by relative pronouns like who, whom, whose, which, and that. Here are some examples of sentences with relative clauses:1. The teacher who teaches English is my favorite.2. The house that we visited yesterday was very beautiful.3. The girl whose brother is a doctor studies in my class.4. The book which is on the table is mine.5. The car that is parked outside is mine.6. The woman who I met at the party is a famous actress.7. The movie that we saw last night was very interesting.8. The man whose dog bit me apologized.9. The school which my brother attends is in the city.10. The cat that lives next door is very friendly.In summary, a relative clause provides more information about a noun in a sentence and is introduced by a relative pronoun. Using relative clauses can help make your writing more descriptive and engaging.。
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定语从句一、概念：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。
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，常见的关系代词包括that，which，who（宾格whom，所有格whose）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。
三、定语从句的分类根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。
限制性定语从句紧跟先行词，主句与从句不用逗号分开，从句不可省去，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。
四、关系代词的用法1. that 既可以用于指人，也可以用于指物。
在从句中作主语或宾语，作主语时不可省略，作宾语可省略。
例如：Mary likes music that is quiet and gentle.玛丽喜欢轻柔的音乐。
（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.which用于指物，在句中作主语或宾语，作主语不可省略，作宾语可省略。
例如：The building which stands near the train station is a supermarket.位于火车站附近的那座大楼是一家超市。
（作主语）The film （which）we saw last night was wonderful. 我们昨天晚上看的那部电影很好看。
（作宾语）3.who，whom用于指人，who 用作主语，whom用作宾语。
在口语中，有时可用who代替whom，也可省略。
例如：The girl who often helps me with my English is from England.经常在英语方面帮助我的那个女孩是英国人。
（作主语）Who is the teacher （whom）Li Ming is talking to？正在与李明谈话的老师是谁？（作宾语）4.作定语，用whose,指人或物The book whose cover is yellow is mine.That boy whose mother is teacher is my friend.注意：（1）但介词在关系代词前时，只能用“介词+which/whom”结构。
(做介词的宾语，指人用whom,指物用which) This is the house in which we lived last year.这是我们去年居住的房子。
Please tell me from whom you borrowed the English novel.请告诉我你从谁那借的这本英文小说。
（2）含有介词的固定动词词组中，介词不可前置，只能放在原来的位置上。
例如：This is the person whom you are looking for. 这就是你要找的那个人。
（4）关系词只能用that的情况：a. 先行词被序数词或形容词最高级所修饰，或本身是序数词、基数词、形容词最高级时，只能用that，而不用which.例如：He was the first person that passed the exam. 他是第一个通过考试的人。
b.被修饰的先行词为all，any，much，many，everything，anything，none，the one等不定代词时，只能用that，而不用which.例如：Is there anything that you want to buy in the shop？你在商店里有什么东西要买吗？c.先行词被the only，the very，the same，the last，little，few 等词修饰时，只能用that，而不用which.例This is the same bike that I lost.这就是我丢的那辆自行车。
d. 先行词里同时含有人或物时，只能用that，而不用which.例如：I can remember well the persons and some pictures that I saw in the room.我能清楚记得我在那个房间所见到的人和一些照片。
e.以who或which引导的特殊疑问句，为避免重复，只能用that.例如：Who is the girl that is crying？正在哭泣的那个女孩是谁？f.主句是there be 结构，修饰主语的定语从句用that，而不用which.例如：There is a book on the desk that belongs to Tom. 桌子上那本书是汤姆的。
（5）关系词只能用which，而不用that 的情况：a.先行词为that，those时，指物用which，指人用who, 而不用that.例如：What‘s that which is under the desk？在桌子底下的那些东西是什么？b.关系代词前有介词时，一般用which，而不用that.例如：This is the room in which he lives. 这是他居住的房间。
c.引导非限制性定语从句，用which，而不用that.例如：Tom came back，which made us happy. 汤姆回来了，这使我们很高兴。
五、关系副词的用法（1）when指时间，其先行词表示时间，在句中作时间状语。
例如：This was the time when he arrived.这是他到达的时间。
（2）where指地点，其先行词表示地点，在句中作地点状语。
例如：This is place where he works.这是他工作的地点。
（3）why 指原因，其先行词是原因，起原因状语作用。
例如：Nobody knows the reason why he is often late for school. 没人知道他为什么上学总迟到。
I.单项填空1. -Do you know the man ___is talking with your father？-Yes，he‘s our headmaster.A. heB. whoC. whichD. whom2. Is this the river _____I can swim？A. whichB. in whichC. thatD. the one3. This is the best hotel in the city _____I know.A. whereB. whichC. thatD. it4. Can you lend me the dictionary ___the other day？A. that you boughtB. you bought itC. that you bought itD. which you bought it5. Anyone ______with what I said may put up you hands.A. which agreesB. who agreeC. who agreesD. which agree6. My watch is not the only thing ______ is missing.A. thatB. itC. which who7. The man ______coat is black is waiting at the gateA. who‘sB. whoseC. that of which.8. The girl ______ is reading under the tree _____my sister.A. which；isB. whom；wasC. who；isD. who；was9. I love places ______the people are really friendly.A. thatB. whichC. whereD. who10. The world ______ is made up of matter.A. in that we liveB. on which we liveC. where we live inD. we live inⅡ、用的关系代词that，which，who，whom填空。
1. The first thing _____you must do is to have a meal.2. April 1st is the day__is called April Fool’s Day in the west.3. The family _____had lost everything in a big fire got much help from their friends.4. The house _____we live in is very old.5. Didn’t you see the man ___I talked with just now？。