2020届高考英语考前冲刺精选语法知识分类详解定语从句

2020;2020 届高考英语考前冲刺优选语法知识分类详解定语从句
1.什么是定语从句
定语从句 (Attributive Clauses) 在句中做定语，修饰一个名词或代词，被修饰
的名词 , 词组或代词即先行词。

定语从句往常出此刻先行词以后，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等。

关系副词有： when, where, why等。

2.关系代词指引的定语从句
关系代词所取代的先行词是人或物的名词或代词，并在句中充任主语、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
这些词取代的先行词是人的名词或代词，在从句中所起作用以下：
Is he the man who/that wants to see you?
他就是你想见的人吗 ?(who/that在从句中作主语)
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，它还可以够同 of which 交换 ), 比如：
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。

Please pass me the book whose (of which) cover is green.请递给我那本绿皮的书。

3)which, that
它们所取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，比如：
A prosperity which / that had never been seen before appears in the
countryside.乡村出现了亘古未有的繁华。

(which / that在句中作宾语) The package (which / that) you are carrying is about to come unwrapped.
你拿的包快散了。

(which / that在句中作宾语)
定语从句
定语从句（ Attributive Clauses ）在句中做定语，修饰一个名词或代词，被修饰的名词 , 词组或代词即先行词。

定语从句往常出此刻先行词以后，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等。

关系副词有： when, where, why等。

一、关系代词指引的定语从句
关系代词所取代的先行词是人或物的名词或代词，并在句中充任主语、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
这些词取代的先行词是人的名词或代词，在从句中所起作用以下：
Is he the man who/that wants to see you?
他就是你想见的人吗？（who/that在从句中作主语）
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，它还可以够同 of which 交换） , 比如：
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。

Please pass me the book whose (of which) cover is green.请递给我那本绿皮的书。

3）which, that
它们所取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，比如：
A prosperity which / that had never been seen before appears in the countryside. 乡村出现了亘古未有的繁华。

（which / that 在句中作宾语）
The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。

(which / that 在句中作宾语 )
二、关系代词 that, which 的用法
A. 以下状况多用 that.
(1) 假如先行词是 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 。

比如：
All the people that are present burst into tears.
Is there anything that I can do for you?
(2) 假如先行词被 the only, the very, the same, the last, the best 等词修饰，关系代词常用 that( 指人时，能够用 who), 比如：
This is the very book that I want to find.
That is the best film that we have seen.
I was the only person in my office that/who was invited.
(3) 当先行词被 all, every, no, some, any, little, much 所修饰时；
(4)当先行词被序数词或形容词最高等所修饰时。

It is the first foreign book that I have ever seen.
This is the most beautiful flower that I have seen.
(5)在there be句型中，常用that.
There is a man that lives in that village.
(6)先行词有两个，一个指人，一个指物，关系代词应当用that 。

比如：
The boy and the dog that are in the picture are very lovely.
B. 以下状况用 which.
(1)当关系词前方有介词时，指物常用 which. The
prize for which he worked so hard was a new bike.
He built a telescope through which he could study the skies.
(2)非限制性定语从句指物时，多用 which.
Bamboo is hollow, which makes it light.
(3)假如先行词自己是 that 时，只用 which.
(4)which 还有一种特别用法，它能够指引从句修饰前方的整个主句，取代主句所表示
的整体观点或部分观点。

在这类从句中， which 能够作主语，也能够作宾语或表语，
多半状况下意思是与 and this 相像，比如：
He succeeded in the competition, which made his parents very happy.
三、关系副词指引的定语从句
关系副词可取代的先行词是时间、地址或原由的名词，在从句中作状语。

1）when, where, why
关系副词 when, where, why的含义相当于"介词+ which"构造，所以经常和"介词+ which" 构造交替使用，比如：
There are occasions when (on which) one must yield. 任何人都有不得不折服
的时候。

Beijing is the place where (in which) I was born.
Is this the reason why (for which) he refused our offer? 北京是我的出生地。

这就是他拒绝我
们帮助他的原由吗？
2）that 取代关系副词
that 能够用于表示时间、地址、方式、原由的名词后取代when, where, why 和 " 介词+ which" 指引的定语从句，在口语中that 常被省略，比如：
His father died the year (that / when / in which) he was born.
他父亲在他出生那年去世了。

He is unlikely to find the place (that / where / in which) he lived
forty years ago. 他不大可能找到他四十年前居住过的地方。

I don ’t like the way (that/ in which) he was treated.
This is the reason he was absent.
四、判断关系代词与关系副词
方法一：用关系代词，仍是关系副词完好取决于从句中的谓语动词。

及物动词后边
无宾语，就一定要求用关系代词；而不及物动词则要求用关系副词。

比如：
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
判断改错（注：先显示题，再显示答案，横线；用不一样的颜色表示出。

）
（错） This is the mountain village where I visited last year.
（错） I will never forget the days when I spent in the countryside.
（对） This is the mountain village (which) I visited last year.
（对） I'll never forget the days (which) I spent in the countryside.
习惯上总把表地址或时间的名词与关系副词where,when联系在一同。

此两题错在关系词的误用上。

方法二：正确判断先行词在定语从句中的成分( 主、谓、宾、定、状 ) ，也能正确选择出关系代词 / 关系副词。

例 1. Is this museum ___ you visited a few days age?
A. where
B. that
C. on which
D. the one
例 2. Is this the museum ____ the exhibition was held.
答案：例 1 D，例 2 A
例 1 变为必定句： This museum is ___ you visited a few days ago.
例 2 变为必定句： This is the museum ___ the exhibition was held.
在句 1 中，所缺部分为宾语，而where, that, on which都不可以起到宾语的作用，只有 the one 既做了主句的表语，又可做从句的宾语，能够省略关系代词，所以应
选 D。

而句 2 中 ,主、谓、宾俱全，从句部分为句子的状语表地址，既可用副词where，
又因 in the museum词组，可用介词in + which指引地址状语。

而本题中，介词on 用的不对，所以选A。

关系词的选择依照在从句中所做的成分，先行词在从句中做主、定、宾语时，选择
关系代词 (who, whom, that, which, whose)；先行词在从句中做状语时，应选择关系副词 ( where地址状语，when时间状语，why原由状语)。

五、限制性和非限制性定语从句
1)定语从句有限制性和非限制性两种。

限制性定语从句是先行词不行缺乏的部分，去掉它主句意思常常不明确；非限制性定语从句是先行词的附带说明，去掉了也不
会影响主句的意思，它与主句之间往常用逗号分开，比如：
This is the house which we bought last month.
这是我们上个月买的那幢房屋。

（限制性）
The house, which we bought last month, is very nice.
这幢房屋很美丽，是我们上个月买的。

（非限制性）
2)当先行词是专闻名词或物主代词和指示代词所修饰时，后来的定语从句往常是非限制性的，比如：
Charles Smith, who was my former teacher, retired last year.
查理 ?史密斯昨年退休了，他以前是我的老师。

My house, which I bought last year, has got a lovely garden.
我昨年买的的那幢房屋带着个美丽的花园。

This novel, which I have read three times, is very touching.
这本小说很感人，我已经读了三遍。

3)非限制性定语从句还可以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，比如：
He seems not to have grasped what I meant, which greatly upsets me.
他仿佛没抓住我的意思，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。

说明：关系代词that 和关系副词 why不可以指引非限制性定语从句。

六、介词 +关系词
(1)“介词＋关系代词“能够指引限制性定语从句，也能够指引非限制性定语从句。

“介词＋关系代词“构造中的介词能够是in, on, about, from, for, with, to at, of, without等，关系代词只可用whom或 which, 不行用 that 。

This is the house in which I lived two years ago.
Do you remember the day on which you joined our club?
(2)from where 为“介词＋关系副词“构造，但也能够指引定语从句。

比如：
We stood at the top of the hill, from where we can see the town.
(3) 像 listen to, look at, depend on, pay attention to, take care of 等固定短语动词，在定语从句中一般不宜将介词与动词分开。

比如：
This is the boy whom she has taken care of.
（4）某些在从句中充任时间，地址或原由状语的 " 介词 +关系词 " 构造能够同关系副词 when 和 where 交换。

This is the house in which I lived two years ago.
This is the house where I lived two years ago.
Do you remember the day on which you joined our club?
Do you remember the day when you joined our club?
（2）Some, any, none 等或数词 +of+which/whom 指引的定语从句。

比如 I
have four books, two of which are interesting.
It ’s a family of three children, all of whom I have ever taught.
七、 as, which非限制性定语从句
关系代词 as 也可指引非限制性定语从句，其从句的谓语常是表示感知的动词，如：know, see, hear, expect等。

从句可放在主句以前、之中、或以后。

As 能够指主句中的某个成分，也能够指整个主句， as 在从句中能够作主语、宾语或表语。

比如：1）Tom, as you know, is a writer.
2）As we have seen, oceans cover more than 70% of the earth.
3）Tom does n’t find his homework, as often happens.
4）Charlie looks strong, as in fact he is.
由 as, which 指引的非限制性定语从句， as 和 which 可代整个主句，相当于 and this 或 and that 。

As 一般放在句首， which 在句中。

As we know, smoking is harmful to one's health.
The sun heats the earth, which is very important to us.
典型例题
1）Alice received an invitation from her boss, ___came as a surprise.
A. it
B. that
C. which
D. he
答案 C. 此为非限制性从句，不可以用 that修饰，而用which，it和he都使后句成为句子，两个独立的句子不可以单以逗号连结。

何况选he 句意不通。

2）The weather turned out to be very good, ___ was more than we could expect. A. what B. which C. that D. it
答案 B。

which 可取代句子，用于非限制性定语从句，而 what 不行。

That 不可以用于非限制性定语从句， it 不为连词，使由逗号连结的两个句子并在一同在英语语法上行不通。

3）It rained hard yesterday, ____ prevented me from going to the park..
A. that
B. which
C. as
D. it
答案 B.
as 和 which 在指引非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都能够作主语和宾语。

但不一样之处主要有两点：
(1 ） as指引的定语从句可置于句首，而which 不行。

(2 ） as代表前方的整个主句并在从句中作主语时，从句中的谓语一定是系动词；
若为行为动词，则从句中的关系代词只好用which 。

在本题中， prevent 因为是行为动词，所以正确选项应为B。

As 的用法
例 1. the same as ；such as 中的 as 是一种固定构造 ,和同样。

I have got into the same trouble as he (has).
例 2. as 可指引非限制性从句，常带有' 正如 ' 。

As we know, smoking is harmful to one's health.
As is know, smoking is harmful to one's health.
As 是关系代词。

例 1 中的 as 作 know的宾语；例 2 中，它充任从句的主语，谓语动词 know要用被动式。

八、定语从句与名词性从句的交换
定语从句和名词性从句因为表达意思的需要，有时能够相互变换。

大概有下边三种
状况：
（１）定语从句与表语从句的交换
That's the thing that we're worrying about.（定语从句）
That's what we're worrying about.（表语从句）
那就是我们正在担忧的事。

This is the way she did it. （定语从句）
This is how she did it. （表语从句）
这就是她做这件事的方法。

This is the reason why we must go now.（定语从句）
This is why we must go now. （表语从句）
这就是我们此刻该走的原由。

That is the place where Xiao Lin was born. （定语从句）
That is where Xiao Lin was born.( 表语从句 )
那就是小林出生的地方。

（２）定语从句与宾语从句的交换
I don't know the reason why she is so happy. （定语从句）
I don't know why she is so happy.（宾语从句）
我不知道她为何这样快乐。

He showed me the place where he used to live.（定语从句）
He showed me where he used to live.（宾语从句）
他带我看了他以前住过的地方。

Do you know the date when Wuhan was liberated?（定语从句）
Do you know when Wuhan was liberated?(宾语从句)
你知道武汉是什么时候解放的吗？
（３）定语从句与主语从句的交换
The thing that we need is more time. （定语从句）
What we need is more time. （主语从句）
我们所需要的是更多的时间。

The time when they will start out has not been decided yet. （定语从句）When they will start out has not been decided yet. （主语从句）
他们什么时候起程还没有决定下来。

The reason why he did it wasn't quite clear.（定语从句）
Why he did it wasn't quite clear.（主语从句）
他为何做那件事还不很清楚。

The place where she lives is not known yet. （定语从句）
Where she lives is not known yet.（主语从句）
她住在什么地方，大家还不知道。

九、学习定语从句应注意的几个问题
（１）定语从句中关系代词与先行词的一致性
定语从句中关系代词一般应与它所指代的先行词的单复数保持主谓一致。

比如：
The students who were here just now are from No,2 Senior Middle School.
但注意以下一组句子：
He is the only one of the students who was here just now.
He is one of the students who were here just now.
假如 "one of +复数名词"后跟有定语从句，一般状况下"one of"后的复数名词为先行词，但当 one 前有 the only,the very,just the修饰时，先行词则为one。

（２）定语从句与重申构造
It is the place where they lived before.
It is in the place that they lived before.
第一个句子为定语从句，where 指代 the place,在定语从句中作状语，第二个句子
为重申构造，重申in the place,that没存心义，把in the place放回后边句子，句子意思完好。

Where is it that he found the lost watch?( 重申句型，重申疑问副词 where) 。

Where is the watch that he found yesterday.( 定语从句， that 指代 the watch) （３）定语从句与并列构造
He has two sons,neither of whom looks like him.
He has two sons,and neither of them looks like him.
I've got two sisters.Both of them are in Shanghai.
第一个句子为定语从句，关系代词 whom指代 two sons, 在定语从句中作介词 of 的宾语。

第二个句子为并列构造，由并列连词 and 连结，人称代词 them 指代 two sons。

第三个为两个独立的句子，两个句子中间用句号，两句开头的处一个字母都大写。

（４）定语从句与状语从句
He found the books where he had put.
He found the books in the place where he had put.
第一个句子为状语从句，where he had put作主句He found the books
的地址状语。

第二个句子为定语从句，where 指引从句修饰 the place。

This is such an interesting book that I'd like to read it.
This is such an interesting book as I'd like to read.
第一个句子为结果状语从句，在结果状语从句中， it 指代 book, 作 read 的宾语。

第二个句子为定语从句，关系代词 as 指代先行词 book 的定语从句中 read 的宾语。

（５）定语从句中的先行词
Is this book the one that you bought yesterday?
Is this the book that you bought yesterday?
第一个句子中， this book 是主句的主语， the one 是先行词。

在第二个句子中this 是主句的主语， the book 是先行词。

必定要防止出现： Is this book that you bought yesterday?
（６）定语从句与同位语从句
定语从句相当于形容词，它对先行词起修饰、描绘或限制作用，而同位语从句则相
当于名词，它对其前方的词赐予说明或作进一步解说，即说明该词所表示的详细内
容。

比如：
The news that we heard is not true.( 定语从句 )
The news that he won the prize is not true.( 同位语从句)
另：在 "have no idea+从句"构造中，其从句都作idea 的同位语。

比如：
I have no idea when she will be back.
十、掌握定语从句中的时空观点
在定语从句的运用中，当其先行词表示时间或空间观点时，有些学生很简单想自然
地用关系副词 when或 where 指引，而没有详细状况详细办理。

所以，应注意以下几点。

（１）从逻辑意义上讲，只有从句中的谓语动词与该先行词组成动状（时间、地址）
关系时，才能用 when或 where 指引从句；或视不一样状况以 prep.+which代之。

比如：
1、 This is the country where/in which Edison was born。

（动状关系）
2 、I'll never forget the year when/in which the terrible earthquake happened.( 动状关系 )
3、 England was one of the places from which the settlers movedto America.( 动状关系 )
（２）从逻辑意义上看，当从句中的谓语动词与该类先行词有主谓关系或动宾关系
时，则以 which/that或prep.+which指引从句。

4、 Please follow the custom of the country which/that you are going to
visit.( 动宾关系 )
5、 For ever I'll remember the year that/which brought me happy memory.(主
谓关系 )
6、 He is going to work in Tibet which/that is far away from Hebei Province.(主谓关系 )
（３）从逻辑意义上讲，当从句中作主语的名词与先行词存在所属关系时，则用词whose。

7、Mr.Gallant is going to the country whose name is Sweden.( 所属关系 )
8、Generally,we refer to( 指的是 )the time whose speed is unchanged.( 所属关系 )
十一、浅述主动式定语从句的简化
英语表达方式是相当灵巧的，为了表达要言不烦，使表达简短明快，常用必定的语
法手段把句子加以简化，定语从句被简化成简单句就是常有的一种。

下边简单说说
主动式定语从句简化的几种状况。

（１）定语从句中的关系代词为从句主语，其谓语动词是此刻进行时，能够用此刻
分词短语来简化。

比如：
The manwho is teaching us English now graduated from Hubei University three years ago.
-->The man teaching us...
此刻教我们英语的老师三年前毕业于湖北大学。

可是，假如定语从句动词以后没有介词作状语时，此刻分词常置于中心词以前。

例
如：
The countries which are developing should get united.
-->The developing countries should...
发展中的国家应当团结起来。

（２）把定语从句简化为此刻分词短语有以下几个条件。

1、从句的动词和主句的动作的时态的一致。

比如：
My father used to work for the neighbours that lived here.
--> ...the neighbours living here.
我父亲过去常给住在这儿的街坊干活儿。

2、从句谓语的动作能够发生在主句谓语动作以前。

比如：
Can you catch the early bus which will leave at 6:00 this morning?
--> Can you catch the early bus leaving at...
你能追上今日清晨六点钟走开的早班汽车吗？
3、从句和主句的动词和动作都是泛指的。

比如：
China is a developing country which belongs to the third world.
--> ...country belonging to the third world.
中国是一个属于第三世界的发展中国家。

4、从句谓语动作一发生，主句谓语动词的动作紧接着发生。

比如：
The man who stole into the bank was caught immediately on the spot.
-->The man stealing into...
溜进银行盗窃的那个人被立刻就地逮住。

（３）假如定语从句中是连系动词be 的一般此刻时或一般过去时，且表语是介词短语，形容词短语或名词短语，能够把它们简化作中心词的后置定语。

比如：
The farmers had to fetch water from a river which was a mile away from
the village.
-->...a river a mile away from the village.
家民们得从离村庄一里路远的河里取来水。

The students who were from the N0.14 Middle School have gathered.
--> The students from the No.14 Middle school...
来自十四中的学生会合好了。

（４）定语从句的谓语是表示程度、时间和方式等的副词或副词短语修饰语，可用
副词和此刻分词（二者之间用连字号）作中心词的前置修饰语。

比如：
This is a man who works hard.
-->This is a hard-working man.
这是一位勤劳工作的人。

（５）假如定语从句的动词是一个一般名词作宾语时，可用名词和此刻分词（二者
之间须用连字号）作定语来简化。

比如：
The south of Hubei is an area which grows rice.
The Sorth of Hubei is a rice-growing area.
（６）定语从句中有一系列并列形容词作表语，可简化成简单句，形容词变为中心
词的前置定语。

比如：
A person who is gentle,lovable and familiar is always easy to get along with.
-->A gentle,lovable and familiar person is always...
一位平和，可爱和熟习的人老是简单相处。

（７）假如定语从句的谓语动词与中心词有逻辑上的动宾关系，动状关系和主谓关
系时，能够简化成不定式短语作中心词的后置定语。

比如：
He is a good student with whom you can study.
-->...student to study with.
他是一位能一同学习的勤学生。

（８）假如定语从句中有have 加宾语被形容词修饰时，能够简化成with 短语中心词的后置定语，也能够简化成名词加-ed 作前置定语。

比如：
a girl who has blue eyes-->
a girl with blue eyes.-->
a blue-eyed girl
十二、定语从句典型错误例析
1.【误】 The finger I dipped into the cup was not the one I put it into
my mouth.
【正】 The finger I dipped into the cup was not the one I put into my mouth.
【析】上句应由关系代词that或which在定语从句中作宾语，已省去。

所以，从句中的宾语 it剩余。

又如：
【误】 Chaplin lived the last years of his life in Switzerland,where he
was buried there in 1977
【正】 Chaplin lived the last years of his life in Switzerland,where he was
buried in 1977.
2. 【误】 I,who is a Chinese,will do my best for our country.
【正】 I,who am a Chinese,will do my best for our country.
【析】定语从句中谓语动词的形式应依照先行词的人称和数来确立，保持主谓一致。

如：① Mike is one of the students who know the truth.(先行词为students)
②Mike is the only one of the students who knows the truth.(先行词为the only one)
3. 【误】 All what you have done is not necessary.
【误】 All which you have done is not necessary.
【正】 All that you have done is not necessary.
【析】 what不能引导定语从句。

当先行词是不定代词（all,something,anything,nothing,everything 等），或先行词受形容词最高等，序数词或last,very 等词修饰时，关系代词常用 that 而不用 which 。

如：①This is the most interesting film that I have ever seen. ②They asked him to tell them everything that he saw in the factory.
4. 【误】 I don't know the man with who my brother is talking.
【正】 I don't know the man with whom my brother is talking.
【析】定语从句中，如介词提早，指人时只用 whom，指物时只用 which: 如：The
two things about which Marx was not sure were grammar and some of the idioms.
5. 【误】 He is the very person for whom I am looking.
【正】 He is the very person who（whom）I am looking for.
【析】有些定语从句中的介词不可以提早，如提早，从句动词的意义会改变。

take care of,look up,look forward to,ask for,make up等短语动词均属此列。

6. 【误】 China Daily has plenty of advertisements,that help to cut the costs
of making the newspaper.
【正】 China Daily has plenty of advertisements,which help to cut the costs
of making the newspaper.
【析】在非限制性定语从句中，指物时用which, 不用 that.
7. 【误】 I can't remember the things and persons who I met at that time.
【正】 I can't remember the things and persons that I met at that time.
【析】先行词既有人又有物时，定语从句用that 指引。

定语从句误用辨析
1.This is the factory where we visited last week.
2.This is the watch for which Li Feng is looking.
3.The person to who you spoke is a student of Grade Two.
4.The house in that we live is very small.
5.Everything which we saw was of great interest.
6.I've read all the books which I borrowed from the library.
7.This is the best film which I have ever seen.
8. My father and Mr Crosset talked of things and persons who they remembered in the school.
9.This is the same bag like I lost yesterday.
10.His dog,that was now very old,became ill and died.
11.This is one of the reasons,why you may like to eat it.
12.Those who wants to go with me put up your hands.
13.The boy,his mother died,studies very hard.
14.I have two sisters,both of them are doctors.
15.We're going to visit the school where your brother works there.
16.The captain's head soon appeared out of the second storey windows,from
which he could see nothing but trees.
17.That is the way which they work.
18.Those have questions can ask the teachers for advice.
19.The news which a new English teacher will come makes us excited.
20. As we all know it,he is American.
辨析：
1、将 where 改为 that 或 which 。

定语从句关系代副词的选择，一看先行词，二看其在从句中的成分。

本句中 visit 是及物动词， which 做其宾语。

2、把 for 放在 looking 以后，当 which 做短语动词（即动词和其介词不可以分开）的宾语时，介词不前置。

3、who改为 whom，只管在口语中 who、whom都能做宾语，但在介词后只用whom。

4、that应为which。

that不做介宾。

5、which 改成 that 。

当先行词有不定代词something,someone,all等时，由that 充任关系代词，不用which 。

6、which 改为 that 。

当先行词被 all,every,no,some,any,little等修饰时，用that, 不用 which 。

7、which 换成 that 。

当先行词中有形容词的最高等、序数词，the only 、 the very 等时，只用 that 指引。

8、who改为 that 。

假如先行词既是人又有物时，则用that 指引定语从句。

9、like改为as。

当先行词里有the same,such 时，用 as 指引限制性定语从句。

10、 which 代 that 。

that不指引非限制性定语从句。

11、去掉逗号。

why 能够指引定语从句，但不可以用于非限制性定语从句。

12、 wants 改为 want。

定语从句的谓语动词的数应与先行词一致。

13、 his 改为 whose。

14、 them 改为 whom,由 both of whom 指引非限拟订语，或去掉逗号，both 大写。

15、 there 剩余，去掉。

16、 from which改为from where。

which只表示地址（place）,where(n)可表示地方，空间（ space）。

17、 which 改为 that或in which。

18、在 Those 后添上 who，指引定语从句。

19、 which 改为 that 。

本句是同位语从句， that不做成分，只起指引作用。

20、去掉 it 。

as 作 know的宾语，以 "he is American"为先行词
历届高考英语单项选择题优选定语从句
1.His parents wouldn ’t let him marry anyone ______ family was poor.
A.of whom
B.whom
C.of whose
D.whose (89)
2.She heard a terrible noise, _______ brought her heart into her mouth.
A.it
B.which
C.this
D.that (91)
3.In the dark street , there wasn ’t a single person _____ she could turn
for help.
A.that
B.who
C.from whom
D.to whom (92)
4.The weather turned out to be very good , ____ was more than we could expect.
A.what
B.which
C.that
D.it (92)
5.After living in Pairs for fifty years he returned to the small town ____
he grew up as a child.
A.which
B.where
C.that
D.when (96)
6．Carol said the work would be done by October. ＿＿＿＿＿ personally I doubt very much.
A. it
B.that
C.when
D.which (99)
7．Dorothy was always speaking highly of her role in the play, ________,of
course , made the others unhappy.
A．who B ．which C ．this D ．what (2000)
8.Recently I bought an ancient Chinese vase , _____ was very reasonable.
A.which price C.the price of which
C.its price
D.the price of whose
9._____ has already been pointed out , grammar is not a set of dead rules.
A.As
B.It
C.That
D.Which
10.He lived in London for 3 months , during ____ time he learned someEnglish.
A.this
B.which
C.that
D.same。