牛津高中英语 定语从句
高一英语(牛津译林版)必修一定语从句1
定语从句一、基本概念1．定语从句：在一个主从复合句中修饰某一个名词、代词或修饰整个主句的从句叫定语从句。
换句话说，定语从句就是用来作定语的句子。
2．先行词：被定语从句修饰的名词或代词叫先行词。
先行词前一般用the ，但在指“一个”概念时可用a , an 。
3．关系代词/ 关系副词：连接先行词和定语从句的词叫关系词，根据其在从句中作用分为关系代词或关系副词。
若先行词在从句中作主语、宾语和定语等，应用关系代词引导定语从句；若先行词在从句中作时间状语、地点状语和原因状语等，应用关系副词引导定语从句。
4．定语从句的位置：一般紧跟在先行词后面。
但有时因句子结构的需要，定语从句和先行词被某些成分隔开。
5．引导定语从句的关系词分为二类：关系代词：that, which ,who, whom ,whose , as关系副词：when, where, why二、基本用法2．使用关系代词时应注意的几个问题：a. 在以下几种情况下只使用that不用which。
1.先行词是不定代词时，如: all, anything, everything, nothing, something, little, few, much。
1.I told him all (that) I know.2.He gave her everything (that) he had.2.先行词被all, every, any, the very, the only, the just等修饰时。
1.I have read all the books (that) you gave me.2.You can take any book (that) you like.3.先行词被序数词和形容词的最高级修饰时。
1. This is the best book (that) I have ever read.2. The second place (that) I want to visit is Shanghai.4.先行词既有人又有物时。
牛津高一模块一Unit 1 语法定语从句 part9
总结：从句中要省略跟主句表示的相同的词。
关系词在定语从句中充当： attribute （ 定语）： She has a brother .I can't remember his name. 1.先找到两句话中共有的名词。（ brother ） She has a brother whose name I can't remember.
I was glad that all my classmates were fond of the cake （that I made）.
先行词
定语从句 关系词
1.你可以选择你喜欢的科目。 定语从句公式：定语从句=先行词+关系词+从句 You can choose the subject which\that you like.
4.先行词student（学生）可以选关系词 who\whom\whose.然后看从句：_____ the teachers fail. 缺少（主语？宾语？定语？） 所以可以选who\whom. 5.先行词classes(科目)，从句缺宾语所以只能选which。 6.take the classes,缺宾语，所以选关系词 which. 7.先行词teacher（老师）可以选关系词 who\whom\whose.然后看从句：_____ class.缺定语。 所以只能选whose. 8.先行词teacher（老师）然后看从句：_____ they like or respect. 缺少宾语 所以可以选who\whom.
地点状语，时间状语where，when省略介词
1.先行词student（学生）可以选关系词 who\whom\whose.然后看从句：_____ study(学习、 动词) in the USA. 缺少（主语？宾语？定语？） 所以只能选who. 2.先行词time(时间)可以选which\whose.从句____they spend。缺宾语， 所以只能选which。 3.先行词student（学生）可以选关系词 who\whom\whose.然后看从句：_____ do not make good use of their time.缺少（主语？宾语？定语？） 所以只能选who.
牛津高中英语模块一 Unit1 定语从句
关系分句&关系词的选择在复合句中起了形容词的作用，在句中修饰一个名词或代词的从句叫做关系分句（定语从句），被修饰的词叫做先行词（antececdent)，引导定语从句的词叫关系词，他的作用一是放在先行词与关系分句中间起了连接作用，二是在分句中担当一个成分，并与先行词保持数的一致。
关系分句分为限制性关系分句和非限制性关系分句。
关系词分为关系代词（that, who, whom, which, whose)、关系副词（when, where, when, why)和关系限定词（whose）.具体关系词的选择如下:考虑三个因素（限定性、指人还是指物、充当的成分）一般：who/whom/that指人which/that指物在限制性关系分句中关系词的选择1．thatthat在定语从句中可以指人也可以指物，在从句中作主语或宾语，但不能放在介词后作介词宾语。
如：The eggs that I bought yesterday were not fresh.我昨天买的鸡蛋不新鲜。
I prefer dumplings that have just been cooked.我更喜欢吃刚煮出来的饺子。
指物时that和which可以互换，但下面几种情况通常用that引导定语从句，不能用which。
（l）当先行词有最高级修饰或本身就是最高级时。
如：This book is the most difficult one that I have ever read.这本书是我所读过的最难的一本书。
The best that I could do was to apologize.我能做的最好的事情就是道歉。
（2）当先行词有序数词修饰或本身就是序数词时。
如：Here are two students，the third that you want is to come in a minute.这儿有两个学生，你要的第三个学生一会儿就来。
(完整)牛津高中英语语法【定语从句】
M1定语从句：关系代词、介词提前、关系副词、限制性一、基本概念（一）定语从句在复合句中作定语，修饰名词或代词的从句叫定语从句。
（二）先行词被定语从句所修饰的名词或代词。
一般情况下，定语从句紧跟先行词。
但也有因各种原因定语从句与先行词被分割的现象。
（三）关系代词和关系副词定语从句的引导词。
与先行词关系密切，因此紧跟先行词，并在定语从句中充当一个成分。
关系代词有：who, whom, which, that和whose, 另外，as也可充当关系代词。
关系代词在定语从句中充当主语、宾语、表语和定语。
关系副词有：when, where和why。
在定语从句中充当状语。
二、关系代词的用法（一）基本用法根据先行词的不同，和在从句中所充当的成分不同，选用不同的关系代词。
如下表：例如：（注意关系代词在定语从句中所充当的成分）①Do you know the professor who/that will give us a speech next week? （作主语）②I read a report about his new novel that/ which will soon be published. （作主语）③The plan that/which they argued about was settled at last. （作宾语）④This is the new secretary (who/whom/that)I would like to introduce to you. （作宾语）⑤The soldier whose legs were badly wounded was operated on without delay. （作定语）注意：关系代词在定语从句中充当宾语时可以省略，充当主语时则不能。
（见上例③④）（二）关系代词that代替which的一些情况which, that 在代替物时，一般可以通用。
牛津高中英语语法【定语从句】
M1定语从句：关系代词、介词提前、关系副词、限制性一、基本概念（一）定语从句在复合句中作定语，修饰名词或代词的从句叫定语从句。
（二）先行词被定语从句所修饰的名词或代词。
一般情况下，定语从句紧跟先行词。
但也有因各种原因定语从句与先行词被分割的现象。
（三）关系代词和关系副词定语从句的引导词。
与先行词关系密切，因此紧跟先行词，并在定语从句中充当一个成分。
关系代词有：who, whom, which, that和whose, 另外，as也可充当关系代词。
关系代词在定语从句中充当主语、宾语、表语和定语。
关系副词有：when, where和why。
在定语从句中充当状语。
二、关系代词的用法（一）基本用法根据先行词的不同，和在从句中所充当的成分不同，选用不同的关系代词。
如下表：例如：（注意关系代词在定语从句中所充当的成分）①Do you know the professor who/that will give us a speech next week? （作主语）②I read a report about his new novel that/ which will soon be published. （作主语）③The plan that/which they argued about was settled at last. （作宾语）④This is the new secretary (who/whom/that)I would like to introduce to you. （作宾语）⑤The soldier whose legs were badly wounded was operated on without delay. （作定语）注意：关系代词在定语从句中充当宾语时可以省略，充当主语时则不能。
（见上例③④）（二）关系代词that代替which的一些情况which, that 在代替物时，一般可以通用。
牛津高中英语语法复习：定语从句
牛津高中英语语法复习：定语从句（一）定义1)在复合句中（一个句子的某一成分由句子承当），修饰某一名词或代词从句叫定语从句或形容词从句；在句中起定语的作用.2)被定语从句修饰的词叫做先行词antecedent1) the man who lives next to us is a policeman.先行词关系代词定语从句2) you must do everything that i do.先行词关系代词定语从句(二)：关系代词的作用; 1.连接主句和从句。
2.代表被修饰的先行词。
3.在定语从句做一个句子成分。
eg. this is the room which i lived in last year.先行词关系代词定语从句教学资源，完全免费，无须注册，天天更新！">(三)：定语从句中有关系代词who, whom, whose, which, that, as.关系副词when, where, why 等引导定语从句。
（四）：用关系代词还是用关系副词关系代词起代词的作用，关系副词起副词的作用，因此同样的先行词，选用什么样的关系词，要由它在定语从句中担任的逻辑作用来决定。
关系代词词行先行词充当成分who人主、宾、表whom人宾that人&物主、宾、表which物主、宾、表as物主、宾whose=of whom\of which人&物定语关系副词when=at\in\on\during which时间状where=at\in\to which地点状why=for which原因状that 在口语中可以代替关系副词以上三者状this is the place where we work.（vi.） (关系词所做的成分关键是有从句中的动词来决定的)this is the place which we visited. (vt. )种类先行词关联词例句说明定从句（人）在从句中做主语或宾语教学资源，完全免费，无须注册，天天更新！" strokeweight="1pt" to="369.3pt,13.85pt" from="0,13.6pt"> 物在从句中做主语或宾语whowhich this is the doctor who saved the boy’s life .这就是救了孩子生命的医生。
牛津高中英语模块一定语从句详解_附习题。
注意。
1.从句相当于整个句子的一个成分，因此，从句不能单独使用。
She saw that he was sleeping.(宾语从句)
I am reading the article which is about your experience in the UK.(定语从句)
e.g. The only person that seems to know the truth is Doctor Brown.
Any person that wants to succeed must work hard.
There is no difficulty that we can not overcome.
She has a brother whose name I can’t remember.
5. 关系词作状语（时间状语、地点状语、原因状语）
The school is in Shenzhen. He studies in the school
The school where he studies is in Shenzhen.
②当先行词跟在系动词be后作表语，或关系词本身作定语从句的表语时，关系代词必须用that，但也可以省略
e.g.My father is no longer the man (that) he was.
He thought his daughter would be the dancer (that) she always wanted to be.
e.g. This is the man from whom your son always begs money.
牛津高中英语定语从句
定语从句及相关术语定语从句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，一般跟在它所修饰的先行词后面。
在复合句中，修饰某一名词或代词叫做定语从句。
(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.被修饰的名词或代词叫做先行词,定语从句一般放在先行词的后面.关系词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代替主句中的先行词，甚至可能是主句中的一部分或者整个主句。
③在定语从句中充当一句子成分。
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，时间状语，原因状语等。
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。
先行词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语时，从句谓语动词的人称和数要和先行词保持一致。
1,who, whom, that这些词代替的先行词是人的名词或代词，who作主语指人，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。
牛津高中英语语法总结
牛津高中英语------- 模块一第一单元定语从句一、定语从句：定语从句的介绍1. 就像是一个形容词或介词短语修饰名词一样，定语从句也可以修饰名词。
定语从句所修饰的名词称为先行词。
形容词：The green team介词短语：The team in green定语从句：The team who were wearing green2. 定语从句通常由关系代词来引导，如which, that, who, whom, whose ，或关系副词来引导，如when, where, why 。
关系代词可以在定语从句中担当主语，宾语，表语，定语；关系副词可以在定语从句中担当状语。
如：做主语The trees which are on the school campus have lost their leaves.做宾语The student whom we saw just now is the best runner in our school.做表语Jack is no longer the lazy boy that he used to be.做定语She has a brother whose name I can ’t remember.做状语The school where he studied is in Shenzhen.二、定语从句：关系代词：that ，which，who，whom，和whose1. 在定语从句中，that 和which 用来指代物。
如：This is the story that /which we wrote for our storytelling contest.2. 在定语从句中，who 用来指代人。
如：I am going to see a friend who has just come back from the UK.3. 当who 在定语从句中做宾语时，可以用whom 来取代，且whom 比who 更正式。
高一英语(牛津译林版)定语从句知识讲解
定语从句一、基本概念1．定语从句：在一个主从复合句中修饰某一个名词、代词或修饰整个主句的从句叫定语从句。
换句话说，定语从句就是用来作定语的句子。
2．先行词：被定语从句修饰的名词或代词叫先行词。
先行词前一般用the ，但在指“一个”概念时可用a , an 。
3．关系代词/ 关系副词：连接先行词和定语从句的词叫关系词，根据其在从句中作用分为关系代词或关系副词。
若先行词在从句中作主语、宾语和定语等，应用关系代词引导定语从句；若先行词在从句中作时间状语、地点状语和原因状语等，应用关系副词引导定语从句。
4．定语从句的位置：一般紧跟在先行词后面。
但有时因句子结构的需要，定语从句和先行词被某些成分隔开。
5．引导定语从句的关系词分为二类：关系代词：that, which ,who, whom ,whose , as 关系副词：when, where, why二、基本用法2．使用关系代词时应注意的几个问题：a. 在以下几种情况下只使用that不用which。
1.先行词是不定代词时，如: all, anything, everything, nothing, something, little, few, much。
1.I told him all (that) I know.2.He gave her everything (that) he had.2.先行词被all, every, any, the very, the only, the just等修饰时。
1.I have read all the books (that) you gave me.2.You can take any book (that) you like.3.先行词被序数词和形容词的最高级修饰时。
1. This is the best book (that) I have ever read.2. The second place (that) I want to visit is Shanghai.4.先行词既有人又有物时。
牛津高中英语模块一语法定语从句知识
定语从句知识总结一、一般情况下，限制性定从关系代词的选用：例：1.The man who /that lives next door is friendly.2. Library is a building that/which stores lots of books for readers.3.The girl whom / that /不填 / who you have just seen is from America.4.I like the new computer that /which / 不填 my father bought for me.5.The girl whose hair is red is singing.=The girl of whom the hair is red is singing.6. The book whose cover is blue is mine.= The book of which the color is blue is mine.二. 关系副词的使用：当先行词在从句中做原因状语，用 why=for which; (例 1)当先行词在从句中做地点状语，用 where=at/in/ …+which(根据具体情况选择介词)； (例 2) 当先行词在从句中做时间状语， 用 when=on/during/in/ …+ which(根据具体情况选择介词)； (例 3)例：1. I don’t believe the reason why/for which he was late for school.区别： I don’t believe the reason that/which/ 不填 he gave me. (关系词指物，在从句中做宾语)2. This is the school where/in which I once studied.区别： This is the school which/that/ 不填 I once talked about last month. ( 关系词指物，在从句中 做宾语)3. I will never forget the day when/on which he joined the army.区别： I will never forget the day that/which/ 不填 I spent with him. (关系词指物， 在从句中做 宾语)三. 当关系词在从句中做表语时，通常用 that ，在口语中也可以省去。
定语从句
牛津高中英语－模块一定语从句及反义疑问句一定语从句：定语从句的介绍1. 就像是一个形容词或介词短语修饰名词一样，定语从句也可以修饰名词。
定语从句所修饰的名词称为先行词。
形容词： The green team 介词短语：The team in green定语从句：The team who were wearing green2. 定语从句通常由关系代词来引导，如which, that, who, whom, whose,或关系副词来引导，如when, where, why。
关系代词可以在定语从句中担当主语，宾语，表语，定语；关系副词可以在定语从句中担当状语。
如：做主语The trees which/that are on the school campus have lost their leaves.做宾语The student whom we saw just now is the best runner in our school.做表语Jack is no longer the lazy boy that he used to be.做定语She has a brother whose name I can’t remember.做状语The school where he studied is in Shenzhen.关系词:关系代词在从句中做主语、宾语、表语的成分that 做主语、宾语、表语，指代人、物which做主语、宾语，指代物This is the story that /which we wrote for our storytelling contest.who 做主语、宾语，指代人I am going to see a friend who has just come back from the UKwhom做宾语，指代人I don’t know the name of the teacher who/whom I saw in the computer room the other day. whose 做定语，指代人、物I sat next to a girl whose name was Diane.关系副词在句子中做状语成分where 地点状语This is the church where they get marriedwhen 时间状语I will never forget the days when I worked with Helen in that factory.why 原因状语This is the reason why he left school early.定语从句用关系代词or关系副词？Step 1. 确定先行词的性质（人、物）Step 2. 看从句中的句子成分是否完整。
牛津高中英语定语从句语法讲解
牛津高中英语定语从句语法讲解一.定义1.定语从句：修饰某一句中的名词或代词的从句称为定语从句，一般紧跟在它所修饰的先行词后面。
被修饰的词称为先行词。
2.关系词：引导定语从句的关联词称为关系词The man who lives ne某t to us is a policeman.先行词关系代词定语从句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;关系副词有where, when, why等。
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。
二.关系代词引导的定语从句1.who指人，在从句中做主语The boys who are playing football are from ClassOne.2. whom指人，在定语从句中充当宾语，常可省略。
Mr. Liu is the person (whom) you talkedabout on the bus.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。
The man who/whom you met just now is myfriend.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 isliked by most boys.(2) This is the pen (which) he bought yesterday.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。
(5) The number of the people that/who come tovisit the city each yearrises one million.(6) Where is the man that/whom I saw this morning?5. whose通常指人，也可指物，在定语从句中做定语(1) He has a friend whose father is a doctor.(2) I once lived in a house whose roof has fallenin.whose指物时，常用以下结构来代替(3)The classroom whose door is broken will soonbe repaired.(4)The classroom thedoor of which is broken will soon be repaired.三.介词+关系代词引导的定语从句1. 关系代词在定语从句中做介词宾语时，从句常由介词+关系代词which/whom引导(1)The school (that/which) he once studied in is very famous.(2)The school in which he once studied is very famous.2.关系代词前的介词的选择Don’t bring children to see the animals of which they are afraid. (beafraid of 害怕)注意：1. 含有介词的固定动词短语一般不拆开使用，如：lookfor, look after, take care of等(1) This is the watchwhich/that I am looking for. (T)(2) This is the watch forwhich I am looking. (F)2. “介词+关系代词”前可有some, any, none,both, all, neither, most, each, few等代词或者数词(1) He loved his parents deeply, both of whom are verykind to him.(2) In the basket there arequite many apples, some of which have gone bad.四.关系副词引导的定语从句1. when指时间，在定语从句中做时间状语I still remember the day when I first came to theschool.2. where指地点，在定语从句中做地点状语Shanghai is the city where I was born.3. why指原因，在定语从句中做原因状语Please tell me the reason why you missed the plane.注意：1.关系副词引导的从句可以由“介词+关系代词”引导的从句替换 When=atinonduringwhich Where=atino which Why=for which(1) The reason why/for which he refused the invitation is not clear.(2) From the year when/in which he was going to school he began to know whathe wanted when he grew up.(3) Great changes have taken place in the city in which./where I was born.2.当先行词为时间、地点、原因名词时，如果在从句中不是作状语时，不可用关系副词引导。
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定语从句及相关术语定语从句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，一般跟在它所修饰的先行词后面。
在复合句中，修饰某一名词或代词叫做定语从句。
(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.被修饰的名词或代词叫做先行词,定语从句一般放在先行词的后面.关系词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代替主句中的先行词，甚至可能是主句中的一部分或者整个主句。
③在定语从句中充当一句子成分。
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，时间状语，原因状语等。
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。
先行词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语时，从句谓语动词的人称和数要和先行词保持一致。
1,who, whom, that这些词代替的先行词是人的名词或代词，who作主语指人，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? 他是那个男人想见你？（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）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，指人的时候也可以用of whom 代替）(1) They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。
(2) Please pass me the book whose (of which) color is green.请递给我那本绿皮的书。
3,which, that它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，作宾语时可以省略，例如：(1) A prosperity which / that had never been seen before appears in the countryside. 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 carrying is about to come unwrapped. 你拿那个包裹快要散开了。
(which / that在从句中作宾语）4,asas 可以做主语，也可以作宾语，作宾语时一般不省略，指人或者物。
常与such as,the same as等短语连用。
限制性定语从句关系代词关系代词：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在从句中作宾语也可以省略。
[eg：This is the book （which）you want.]2. 如果which在从句中作“不及物动词+介词”的介词的宾语，注意介词不要丢掉，而且介词总是放在关系代词which的前边，但有的则放在它原来的位置3. 代表物时多用which，但在下列情况中用that而不用which：a)先行词是anything, everything, nothing , none等不定代词时；b)先行词由every, any, all, some, no, little, few, much等修饰时，这时的that常被省略；c)先行词前有序数词或被形容词最高级修饰时；d)先行词中既有人又有物时；e)整个句中前面已有which，who,that时；f)当先行词为物并作表语时；g)先行词为one时；h)先行词同时又被the only,the very,the same修饰时；4. who和whom引导的从句用来修饰人，分别作从句中的主语和宾语，whom作宾语时，要注意它可以作动词的宾语也可以作介词的宾语5. whose是关系代词，修饰名词作定语，相当于所修饰成分的前置所有格.它引导的从句可以修饰人和物, 当它引导的从句修饰物体时, 可以与of which 调换,表达的意思一样。
关系副词关系副词：在句中作状语关系副词=介词+关系代词why=for whichwhere=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是关系副词，用来表示地点的定语从句。
2. when引导定语从句表示时间[注]值得一提的是，表示时间“time"一词的定语从句只用when引导，有时不用任何关系代词，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 first time when I met 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。
每一次他去出差，他带来了生活必需品，如毛巾，肥皂，牙刷等，很多。
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来引导There is somebody here who wants to speak to you. 这里有人要和你说话。
非限制性定语从句的作用是对所修饰的成分作进一步说明，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1. which引导的非限定性定语从句作用是说明前面整个句子的情况或主句的某一部分2.当先行词是专有名词、物主代词或指示代词所修饰时，其后的定语从句通常是非限制性的，例如：Charles Smith, who was my former teacher, retired last year. 查理·史密斯去年退休了，他曾经是我的老师。
My house, which I bought last year, has got a lovely garden.我去年买的的那幢房子带着个漂亮的花园。
This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。
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也可用作关系代词5. 在非限定性定语从句中，不能用关系副词why和关系代词that，而用who, whom代表人，用which,whose代表事物，如果需要用why，可用for which代替.；p.s: which引导的非限制性定语从句其后不可省略成分，as可以关系代词引导的定语从句who指人在从句中做主语(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指人在定语从句中充当宾语，常省略。
（注：who和whom已无太大区别，基本可以通用。
区别是who可以做主语而whom不可以，whom前可以加介词如to whom，但是who不可以）(1) Mr. Liu is the person (whom) you talked with on the bus. 刘先生就是在公交车上和你聊天的那个人.(2) 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.(3) The man who/whom you met just now is my friend. 你刚刚见到的那个人就是我的朋友.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.比如: He is the man whom/who I talk to. 他就是那个和我聊天的男人.如果是在从句中作主语就只能用who.比如: He is the man who has an English book. 他就是那个有英语书的男人.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) The classroom whose door is broken will soon be repaired.那个门被打破的教室不久会被修复。