牛津高一英语语法--定语从句
牛津译林版必修一高一英语上语法-定语从句(二)
定语从句（二）考情分析关系副词在高考中的考点主要是：关系副词when,where,why引导定语从句，在从句中作状语，可以根据情况转换成“介词+which”一、关系副词引导的定语从句当定语从句中不缺少主语、宾语或表语时，用关系副词when,where或why引导定语从句。
此时，如果先行词指时间，用when，指地点用where，指原因用why。
【关系副词引导的定语从句】牢记关系词的三个作用：（1)引导定语从句(2)代替先行词(3)在其所修饰的定语从句中担当成分关系代词引导定语从句时，在从句中充当主语、宾语、表语或定语关系副词引导定语从句时，在从句中充当状语关系副词=介词+关系代词why =for whichwhere=in/at/on/...which(介词同先行词或谓语动词搭配）when=at/during/on/in/...which(介词同先行词或谓语动词搭配）1.where指地点，在定语从句中作地点状语。
The place where were to have the Speech Contest has not been decided yet.我们举行演讲比赛的地点还未定下来。
That is a beautiful campus where I made a lot of dreams.那是一座我曾经在那儿有过许多梦想的美丽的校园。
2.when引导定语从句表示时间，在定语从句中作时间状语。
He came at a time when we needed help他在我们需要人帮忙的时候来了。
We don't know the exact time when the English Evening will be held.我们不知道英语晚会举行的确切时间。
3.why指原因，在定语从句中作原因状语。
He didn't tell her the reason why he was so happy.他没有告诉她为什么他那么高兴。
牛津译林版英语高考英语语法专题复习：定语从句归纳拓展讲解
牛津译林版英语高考英语语法专题复习：定语从句归纳拓展讲解语法专题一定语从句定语从句在句中作定语，修饰名词或代词。
被修饰的名词或者代词被称为先行词，定语从句一般放在先行词的后面。
引导定语从句的词被称为关系词，关系词有关系代词和关系副词，它们在先行词和定语从句之间起引导作用，在意义上代替先行词，在定语从句中充当一个成分。
其基本解题方法是：第一，找出先行词；第二，看先行词在定语从句中充当的成分，作主语、宾语、表语或定语时要用关系代词，如果作状语，则要选用关系副词；第三，看先行词是否为特殊词，然后根据需要选用合适的关系词。
考点一关系代词与关系副词的区别关系代词有who，whom，which，tha t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。
1．who 指人，在定语从句中作主语或宾语。
The boys who are playing football are from Class One.2．whom 指人，在定语从句中作宾语，常可省略。
Mr Liu is the person（wh o m）you talked about just now.3．which 指物，在定语从句中作主语或宾语，作宾语时常可省略。
The book which he gave me is very interesting.4．that 指人时，相当于who 或whom；指物时，相当于which。
在定语从句中作主语或宾语，作宾语时常可省略。
She is the pop star（that）I want to see very much.5．whose 可指人或物，修饰名词或代词，在定语从句中充当定语。
“whose＋名词”可改为“the＋名词＋of which/whom”或“ofwhich/whom the＋名词”。
The house whose windows are very large is my uncle's.＝The houseof which the windows are very large is my uncle's.6．as 可指人也可指物，在定语从句中作主语、宾语或表语。
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Unit 1 语法 定语从句讲解 .ppt
(四) 关系代词用who/whom不用that的情况
One who has nothing to fear for oneself dares to tell the truth. Those who were not fit for their work could not see the beautiful clothes made of the magic cloth. He has a son, who has gone abroad for further study. I like the person to whom the teacher is talking. There was a Mr. Green who wanted to see you.
关系词 先行 词
人
人
从句 成分
主，宾
宾
例
句
who
whom whose that
Do you know the man who is talking with your mother?
Mr. Smith is the person with whom I am working. The boy (whom) she loved died in the war.
Company Logo
Grammar
Add Your Company Slogan
---the attributive clause
By Yolanda Ye
英语基本句型
SV
SVO
Iron rusts.
Liverpool won the game.
SVP
SVoO SVOC
定语从句-牛津英语高一
方法同上：介词 先行词 先行词， 从句谓语动词 动词有关 方法同上：介词+先行词， 从句谓语动词有关
Solve the problem in my way That\which _____ I do with it in . 作in的宾语 的宾语
in which\ that Solve the problem in my way ___________ ___________ \也可以省略 也可以省略 +in the way I do with it in .
1先行词是事物从句主宾语从句whichthat2先行词是人做从句主语从句thatwho先行词是人做从句宾语从句thatwhowhom3先行词表示谁的代词从句4先行词做从句宾语关系词thatwhichwhowhom可以省略whosewhosewhose1which只能修饰2who只能修饰可以做从句主语宾语whom只修饰只能做从句人3可以修饰人和事物
when
in ______ the month
in The campus _____which I earn respect where in ______ the campus on The hill _____which I find much fun where on ______ the hill
why The reason_____ I want to run the club The day when I saw you ______ the canteen where _______I have desserts
When\ On I ‘ll never forget the day ________ which
1 ） 先 行 词 是 事 物 _____________+从句 which/that _____________+从句
Unit 3 Grammar 讲义-高一英语牛津译林版(2020)必修第一册
译林版必修第一册Unit3单元语法--关系代词引导的限制性定语从句语法精析在复合句中，修饰某一名词、代词或整个主句的从句叫定语从句。
被定语从句修饰的名词或代词叫先行词，连接先行词和定语从句的词叫关系词。
关系词的主要作用是连接主句和从句，同时指代先行词，并在从句中充当一定的句子成分。
关系词分为关系代词和关系副词两种，关系代词有that，which，who，whom，whose等；关系副词有when，where，why。
一、关系代词的用法1．who指人，在定语从句中作主语或宾语。
The person who tricked me was one of my classmates.骗我的那个人是我的一个同学。
He is the man who I respect very much.他就是我非常尊重的那个人。
2．whom指人，在定语从句中作宾语，常可省略。
The old man (whom) the girl had tricked was my grandfather.女孩欺骗的那位老人是我的爷爷。
[温馨提示](1)关系代词whom在口语或非正式文体中常可用who/that来代替。
The boy (who/whom/that) we saw yesterday was John’s brother.昨天我们看到的那个男孩是约翰的哥哥。
(2)在从句中作介词的宾语且直接跟在介词后时，用whom，不用who。
He is a man from whom we are all ready to learn.他是我们大家都准备向他学习的人。
3．which指物，在定语从句中作主语或宾语，作宾语时可省略。
The gold medal (which) she won has been given to her old school.她曾经获得的那块金牌已经被送给她的母校了。
4．that指人时，相当于who或whom；指物时，相当于which。
牛津译林版必修一高一英语语法 定语从句(一)
定语从句(一)考情分析定语从句是英语中最为重要的语法，是中国人学习英语的难点之一，也是高考的常客。
其热点考查内容如下：一、在完形填空中通过定语从句考查先行词的选择；在阅读理解中考查对定语从句的理解和与其他各种从句在意义上的转换；三、在语法填空和短文改错中直接考查对关系词的选择根据先行词派生的主谓一致，定语从句的时态等；四、在书面表达中考查通过定语从句给作文润色。
所谓从句，就是一个主谓结构，相当于整个句子(这样的句子叫复合句)的一个成分，因此，从句不能单独使用。
在复合句中修饰名词或代词，作定语的句子叫定语从句。
定语从句所修饰的词叫“先行词”，因为它总是处在定语从句的前头，比定语从句先行一步。
引导定语从句的词叫关系词，包括关系代词和关系副词。
下面通过两个实例来说明定语从句及其相关成分的分布情况：whom在从句中作宾语在从句中作主语一、关系代词概说关系词在定语从句的构成里起至关重要的作用。
我们甚至可以说，掌握不好关系词就无法掌握定语从句，也无法理解文中带有定语从句部分的意思。
因此，我们首先讨论一下关系词的有关问题。
定语从句中的关系词只有两类：关系代词和关系副词；没有连词。
也就是说，定语从句中的所有关系词不但都有具体的意义而且都在从句中担任一定的成分。
关系代词有who, whose,whom,that, which等，用来引导定语从句。
关系代词在定语从句中通常作主语、宾语、定语或表语；另一方面它们又代表主句中被定语从句所修饰的那个名词或代词(这样的名词和代词叫作先行词)。
关系代词图示1.关系代词：who,whom, whose, which,that等。
(1)vho用于代替“表示人的意义”的先行词，并且在从句中作主语；在现代英语里，也可取代whom在从句中作动词的宾语。
I have no idea about the man who wrote the article.我不认识写这篇文章的那个人。
(2)whom用于代替“表示人的意义”的先行词，并且在从句中作动词或介词的宾语。
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.
译林牛津版高中英语必修一语法讲解 定语从句(1)
定语从句（1）概念引入：She is the girl who sings best of all.她是所有人中唱得最好的。
This is the best film that I have ever seen.这部电影是我看过的最好的一部。
He had failed in the maths exam, which made his father very angry.他数学考试没有及格，这使他的父亲很生气。
Give me the book whose cover is green.把那本儿绿皮儿的书给我。
定语从句是我们初中学过的一项语法，上面这些句子与你初中学的有差别吗？是不是有点不同呢？从这个单元开始，我们将学习定语从句的升级版，但还是从头开始学哟。
语法点拨【定语从句一P1】，定语从句的定义Do you know the girl who came here yesterday? 你认识昨天来的那个女孩吗？The book which he bought the day before yesterday is very good.他前天买的那本书很棒。
He is the man whom we should learn from. 他就是我们应该学习的人。
Her friend whose home is very far came to see her. 她的那位家很远的朋友来看她了。
其中粗体的部分就是定语从句，划横线的部分叫做先行词，也就是被定语从句修饰的词。
定语从句：修饰一个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。
先行词：被定语从句修饰的名词或代词。
关系词：上面例子中的关系代词who, whom, which, that是用来引导定语从句的连接词。
这些连接词代替先行词在从句中担任一个成分，如主语、宾语或表语。
例如：Those students who study in this school are good at football.（who代替先行词students在从句中充当主语）There is still much homework which we must finish.（which代替先行词homework在从句中充当宾语）关系代词引导的定语从句I. who和whom1. who和whom代表人, 当先行词在从句中作主语时用who引导，作宾语时用whom引导。
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。
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。
（完整）牛津高中英语语法【定语从句】
（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。
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牛津高一英语语法--定语从句『定义』在复合句中充当定语的从句叫定语从句。
定语从句的作用相当于形容词，用来修饰主句中的某一名词或代词或整个主句，所以，也称作形容词性从句。
被定语从句修饰的词叫先行词，定语从句一般紧跟在它所修饰的先行词之后。
在先行词和定语从句之间起连接作用的词叫关系词。
关系词有关系代词和关系副词两种。
1) 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一、关系代词引导的定语从句引导定语从句的关系代词主要有who, whom, whose, which, that 等。
它们分别代替前面的先行词，并在定语从句中作主语、宾语或定语。
A．who指人，在定语从句中作主语。
What was the name of the man who lent you the money借钱给你的那人叫什么名字？（定语从句修饰先行词the man）He who laughs last laughs best.谁笑到最后谁笑得最好。
（定语从句修饰先行词he）The chairman of the meeting, who spoke first, sat on my right.会议主席坐在我右边，他先发言。
（定语从句修饰先行词the chairman）B．whom指人，在定语从句中做宾语。
在口语或非正式文体中，whom 可省略或可用who来代替，但在介词后面以及在非限制性定语从句中只能用whom。
There are some people (whom/who)we like and others (whom/who) we dislike.有些人我们是喜欢的，有些人则是我们讨厌的。
（定语从句分别修饰先行词people, others）The people whom/who I work with are all friendly.和我一起工作的人都很友好。
（定语从句修饰先行词the people）Mr Carter, whom I spoke to on the phone last night, is very interested in or plan.昨晚我在电话里和卡特先生交谈过，他对我们的计划很感兴趣。
（非限制性定语从句中不能用who代替whom）Two men, neither of whom I had ever seen before, came into my office.两个人来到我的办公室，我以前从未见过他们。
（在介词后面不用who）C．whose通常指人，也可指物，在定语从句中做定语，后面要紧跟被修饰的名词。
There are some people whose faces you can nevr forget.有些人，他们的脸你永远难以忘怀。
（定语从句修饰先行词people）I saw some trees whose leaves were black because of the polluted air.我看见一些树的树叶由于空气污染而发黑。
（定语从句修饰行词trees）D．which1．指物，在定语从句中做主语或宾语。
做宾语时常可省略。
English is a language which is easy to learn.英语是一门容易学的语言。
（which在定语从句中作主语，不能省略）This is a folk song which is now very popular.这是目前非常流行的一首民谣（which在定语从句中作主语，不能省略）The river which flows through London is the Thames.流经伦敦的河叫泰晤士河。
（which在定语从句中作主语，不能省略）The children like cookies (which) my wife makes.孩子们喜欢我夫人做的饼干。
(关系代词which作makes的宾语，可以省略)2．which引导的非限制性定语从句可以修饰前面的整个主句，相当于and this。
Jim passed his driving test, which surprised everybody.吉姆通过了驾驶考试，这使大家都感到惊讶。
（定语从句修饰的是整个主句，而不是the driving test）Sheila couldn't come to the party, which was a pity. 希拉不能来参加聚会，真遗憾。
（定语从句修饰的是整个主句，而不是the party）3．which在非限制性定语从句中有时也可以作定语。
John stayed here for a week, during which time we visited the West Lake together.约翰在这里呆了一星期，在此期间我们一起游了西湖。
It might snow this weekend, in which case we won't go to Beijing. 周末可能下雪，在这种情况下，我们就不去北京了。
E．that指人时，相当于who 或whom；指物时，相当于which。
在定语从句中作主语或宾语（做宾语时常可省略）。
He is the man that lives next door.他就是住在隔壁的那个人。
（定语从句修饰先行词the man，作主语）I don't like stories that have unhappy endings.我不喜欢结尾悲伤的故事。
（定语从句修饰先行词stories，作主语）The dress (that) Ann boughtdoesn't fit her very well.安买的衣服不太合身。
（定语从句修饰先行词the dress，that 作宾语可省略）Is there anything (that) I can do for you有我能为你效劳的事吗？（定语从句修饰先行词anything，that 作宾语，可省略）【提示】：在口语中，that有时还可以作关系副词，相当于when或介词+which结构。
We left the day (that) he arrived. 他来的那一天，我们就走了。
（that替when）He doesn't see things the way (that) we see them. 他看问题的方法和我们不一样。
（that代替in which）Imagine the speed (that) he drives his car! 很难想象，他开车的速度那么快！（that代替at which）F．其他关系代词as 和but也可作关系代词，引导定语从句。
1．asas可以在限制性定语从句和非限制性定语从句中作主语或宾语。
①在限制性定语从句中，as可跟在由such, so, the same修饰的先行词之后。
Such men as heard him were deeply moved.听过他说话的人，都会深受感动。
（as在定语从句中作heard 的主语）I've never heard such stories as he tells.我从未听过像他讲的这样的故事。
（as在定语从句中作tell的宾语）He lifted so heavy a stone as no one else can lift.他搬起别人都搬不起的大石头。
（as在定语从句中lift的宾语）【比较】：在the same...as…结构中，as也可用that代替。
但严格地说，the same...as…强调同类性，the same...that…注重同一性。
She wore the same dress as her younger sister wore.她穿着跟她妹妹所穿的一样的衣裙。
（as指的是与先行词相似的同类事物）She wore the same dress that she wore at Mary's wedding.她穿着她在玛丽婚礼上穿过的同一条连衣裙。
（that指的是与先行词同一事物）②在非限制性定语从句中，as可代表主句整个句子，引导的定语从句可以放在主句之前或主句之后，一般用逗号与主句分开。
As everyone knows, Taiwan belongs to China.众所周知，台湾属于中国的领土。
He is from the outh, as we can know from his accent.他是南方人，这一点我们从他的口音可以知道。
【必背】：一些由as引导的定语从句常位于句首，已形成了固定的说法。
as is known to all 这是众所周知的as has been said before 如前所说as is often the case 情况常常如此as may be imagined 这可以想象得出as has been pointed out 正如已经指出的那样as often happens 这种情况常常发生2．butbut作关系词只能引导限制性定语从句，同具有否定意思的主句连用，相当于that…not, who…not或which…not。
There is not a single student in my class but would like to study more.我班上没有一个学生不愿意多学一点的东西的。
（but = who…not ）There are very few but are against war.很少人不反对战争。
（but = who…not）G．介词+关系代词引导的定语从句介词+关系代词引导的定语从句是一种很常见但也比较复杂的定语从句结构。
1. 介词+关系代词中介词的位置关系代词whom, which在从句中作介词宾语时，可以跟介词一起放在从句与主句之间（that, who不可以），也可以把介词放在从句中有关动词的后面，使关系代词紧跟它所修饰的先行词。
He is a man of rich experience, from whom much can be learned. = He is a man of rich experience, whom much can be learned from.他是个经验丰富的人，从他那儿可以学到很多。
The school in which he once worked is a key school.=The school (which / that) he once worked in is a key school.他曾经工作过的学校是一所重点学校。