高一英语必修一Unit4定语从句.
合集下载
Unit4 定语从句-高中英语人教版2019必修第一册
指人
指物
Find out the relative clauses and identify the major elements（成分） of these clauses.
Group work
• The beautiful woman who /whom the king remarried was unkind. 宾语 • The queen was a woman who couldn’t bear anyone to be more beautiful
2.She was a girl whom/that/who her stepmother is unkind to.
3.She was a girl whose
skin is as white as snow.
Apply the rules
Complete each sentence with relative pronouns and guess who they are .
Apply the rules
Complete each sentence with relative pronouns and guess who they are .
1.It was a thing which/that was on the wall. 2.It was a thing which/ thatcould answer any question. 3.It was a thing whose owner was beautiful but cruel woman .
relative clauses .
Thank you!
Learning Objectives
1. Identify relative clauses in sentences; 2. State what relative clauses are and know their functions; 3. Analyze the structures of relative clauses accurately; 4. Use a relative pronoun properly in a sentence with a relative clause; 5. Create new sentences with relative clauses to describe our classmates.
Unit 4 Grammar【定语从句关系代词】课件-高一上学期英语课件(人教版2019必修第一册)
指人: that/who (主语) 例2: The boy_(_w_h_o_/_w_h_o_m__/_th_a_t_)__ the nurse is looking after is my friend.
指人: who/whom/that(宾语,可省略)
④that指人或物 在定语从句中作主语或宾语，作宾语时 常可省略。
(1) 先行词为不定代词all, everything, nothing, much, something,anything, little等 She has something that you can borrow.
(2)先行词被特定 all, every, no, some, any, little, much, the only, the very, the same, the last修饰 I’ve read all the books that are not mine. This is the very book that I want to read.
例5：Yesterday she talked with one woman _B___
husband died in that accident.
A. which
B. whose
C. of which
D. that
关系代词表示先行词的所属关系，指人和物 时都用whose,可理解为“…的”
只用that而不用which的情况。
6. The school in __w_h_i_c_h__ my sister once studied is very famous.
7. Professor Yang is a person from _w_h_o_m__ I have learned a lot.
指人: who/whom/that(宾语,可省略)
④that指人或物 在定语从句中作主语或宾语，作宾语时 常可省略。
(1) 先行词为不定代词all, everything, nothing, much, something,anything, little等 She has something that you can borrow.
(2)先行词被特定 all, every, no, some, any, little, much, the only, the very, the same, the last修饰 I’ve read all the books that are not mine. This is the very book that I want to read.
例5：Yesterday she talked with one woman _B___
husband died in that accident.
A. which
B. whose
C. of which
D. that
关系代词表示先行词的所属关系，指人和物 时都用whose,可理解为“…的”
只用that而不用which的情况。
6. The school in __w_h_i_c_h__ my sister once studied is very famous.
7. Professor Yang is a person from _w_h_o_m__ I have learned a lot.
高一英语必修一Unit4Earthquakes知识点讲解和练习
一、关系代词的用法
1、关系代词which用来指物，在从句中可作主语或宾语。
This is a book which tells about space rocket technology.（作主语）
The letter which I received yesterday was from my brother.（作宾语）
【归纳总结】
give out分发；发出；用完give sth.away赠送；颁发；泄露
give back归还；复原givein呈上；倒戈，屈服，认输
give off发出，放出give over停止，中止
give up放弃give on to/onto sth.朝向，面对；通向
8、Your speech was heard by a group of fivejueges,all of whom agreed that it was thebest one this year.
易混词
辨析
例句
injury
多指意外事故受伤。比hurt正式，hurt多指伤痛，而injure则指损害健康、成就、容貌等，强调功能的损失。
A bullet injured his lefgt eye.
hurt
既可指肉体上的损害，也可指精神上、感情上的损害；作不及物动词，意为“（身体某部位）难受”。指肉体上的损害时，hurt可与badly,slightly,seriously等连用，但若指精神上的创伤，只能说very much/rather/deeply hurt。
(1)n.裁判员；法官；审判员
His father used to be a judge.他的父亲过去是一名法官。
(2)v.推断；断定
1、关系代词which用来指物，在从句中可作主语或宾语。
This is a book which tells about space rocket technology.（作主语）
The letter which I received yesterday was from my brother.（作宾语）
【归纳总结】
give out分发；发出；用完give sth.away赠送；颁发；泄露
give back归还；复原givein呈上；倒戈，屈服，认输
give off发出，放出give over停止，中止
give up放弃give on to/onto sth.朝向，面对；通向
8、Your speech was heard by a group of fivejueges,all of whom agreed that it was thebest one this year.
易混词
辨析
例句
injury
多指意外事故受伤。比hurt正式，hurt多指伤痛，而injure则指损害健康、成就、容貌等，强调功能的损失。
A bullet injured his lefgt eye.
hurt
既可指肉体上的损害，也可指精神上、感情上的损害；作不及物动词，意为“（身体某部位）难受”。指肉体上的损害时，hurt可与badly,slightly,seriously等连用，但若指精神上的创伤，只能说very much/rather/deeply hurt。
(1)n.裁判员；法官；审判员
His father used to be a judge.他的父亲过去是一名法官。
(2)v.推断；断定
人教必修一Unit 4 定语从句之关系代词(解析版)
第09练定语从句之关系代词定语从句的先行词和关系词在复合句中作定语，修饰主句或主句中某一名词或代词的从句叫定语从句。
定语从句由关系词引导。
限制性定语从句表现为在意义上是先行词不可缺少的定语，若省略，主句的内容就不完整或失去意义；它和主句的关系十分密切，不可用逗号分开。
先行词是被定语从句修饰的名词或代词。
关系词指代先行词，在从句中作一定的句子成分。
引导定语从句的关系代词有which，that，who，whom，whose，as等。
先行词是定语从句修饰和限定的成分，从构成上而言，它可以是名词、代词、名词性短语等；从句子成分上而言，它可以是主句的主语、宾语、表语等。
下面，我们从两个实例来看一下定语从句及其相关成分的分布：1.关系代词that即指人又指物；作主语或宾语（作宾语时可省略）只用于限制性定语从句中，介词后面不能跟that。
当代替物时，可以与which通用。
Yesterday Emily was wearing the new dress that I gave her．昨天艾米丽穿了我送给她的新衣服。
I have a friend that likes listening to classical music我有个朋友喜欢听古典音乐。
2.关系代词which指物；作主语或宾语（作宾语时可省略）在非限定性定语从句中，只宜用which,不能用that.在限定性定语从句中，可用在介词之后。
My parents live in a house which is more than 100 years old我的父母住在一座具有100多年历史的房子里who,whom指人；作主语或宾语（whom常可省略）先行词必须为人。
Who可代替在从句中担任宾语的whom,若前有介词，须用whomA couch potato is a person who spends a lot of time watching TV．“A couch potato”指那种成天沉湎于电视中的人。
Unit 4 定语从句 课件【新教材】人教版(2019)高中英语必修第一册
②关系词在从句句子中充当了成分，其意思就是先行词的意义，
所以在从句中不能重复其意。
There are many places we can visit (them) in China.
1.只用that，不用which引导的定语从句。
①当先行词是不定代词something, everything, anything, nothing, all, much, little, none, the one时。 Do you have anything that you want to say for yourself? 你还有想要为你自己说的事情吗？ You should hand in all that you have. 你应该上交你拥有的一切。
关系词
从句
非限定性定语从句
1. The boy running on the playground is Peter. 简单句 2. The boy who is running on the playground is Peter. 限从 3. What the boy wants to do is to run on the playground. 主语从句 4. The novel, which I read last night, is very interesting. 非限 5. This is the best novel that I have ever read. 限从
I made Tom is my best friend laugh in class yesterday.
先行词 关系词
定语从句 又称形容词性从句，在复合句中修饰名词或代词，起定语作用。 先行词 被定语从句修饰的名词或代词或整个主句。
所以在从句中不能重复其意。
There are many places we can visit (them) in China.
1.只用that，不用which引导的定语从句。
①当先行词是不定代词something, everything, anything, nothing, all, much, little, none, the one时。 Do you have anything that you want to say for yourself? 你还有想要为你自己说的事情吗？ You should hand in all that you have. 你应该上交你拥有的一切。
关系词
从句
非限定性定语从句
1. The boy running on the playground is Peter. 简单句 2. The boy who is running on the playground is Peter. 限从 3. What the boy wants to do is to run on the playground. 主语从句 4. The novel, which I read last night, is very interesting. 非限 5. This is the best novel that I have ever read. 限从
I made Tom is my best friend laugh in class yesterday.
先行词 关系词
定语从句 又称形容词性从句，在复合句中修饰名词或代词，起定语作用。 先行词 被定语从句修饰的名词或代词或整个主句。
人教版高中英语必修一： Unit 4 Earthquakes 定语从句(2)课件(21张)
this afternoon
when
when I came here
I
came
here
when
Exercise:
1.September is the month____ I come to school.A.who B.when C.that D.which2.I remembred the time_____ she left home.A.who B.when C.that D.which
Conclusion:1.定语从句(概念）：在复合句中，修饰名词或代词的从句叫做定语从句。2.三要素：先行词，关系词，定语从句3.关系代词：who，whom,which,that指人：who（做主语），that whom（作宾语），that指物：which（做主语或宾语），that
C
A
B
D
Thanks!
a book（物）
whose
whose coulour I forget.
I
forget
whose colour
Exercise:
1.This is my room _______window faces south.A.who B.whose C.that D.which2.I know the girl_______bag I find.A.who B.whom C.whose D.which
the scientist（人）
whose
whose name is famous
whose name
is
famous
He has a book whose colour I forget.先行词：关系代词： 从句： 主语: 谓语： 宾语：
when
when I came here
I
came
here
when
Exercise:
1.September is the month____ I come to school.A.who B.when C.that D.which2.I remembred the time_____ she left home.A.who B.when C.that D.which
Conclusion:1.定语从句(概念）：在复合句中，修饰名词或代词的从句叫做定语从句。2.三要素：先行词，关系词，定语从句3.关系代词：who，whom,which,that指人：who（做主语），that whom（作宾语），that指物：which（做主语或宾语），that
C
A
B
D
Thanks!
a book（物）
whose
whose coulour I forget.
I
forget
whose colour
Exercise:
1.This is my room _______window faces south.A.who B.whose C.that D.which2.I know the girl_______bag I find.A.who B.whom C.whose D.which
the scientist（人）
whose
whose name is famous
whose name
is
famous
He has a book whose colour I forget.先行词：关系代词： 从句： 主语: 谓语： 宾语：
必修一unit4语法定语从句关系代词用法整理
You need it for the exam.
This is the book (which) you need for the exam.
这正是你考试所需要的书。（宾语）
the black the white i-phone the new the old
The i-phone is mine.
1.Michael Jackson who/that danced well was famous all over the world.
2.The cat is mine.
which/ that is cute
3.The house whose roof is brown is mine.
4.Titanic is the ship which/that sank after hitting the iceberg.
定语从句的关系代词
1.who:指人，在定语从句中作主语。
This is the doctor. He saved my life. This is the doctor who saved my life. The girl is in our class. She likes Jay.
The girl who likes Jay is in our class.
She is the girl who can speak English well.
先行词 关系词
定语从句：在复合句中，用来修饰名词或代词的从 句。定语从句所修饰的词叫先行词。
She is the girl who can speak English well. 先行词 关系词
who, whom 关系代词
The woman is Lady Gaga. She wears strange clothes.
高中英语必修一 unit 4 定语从句
10. This is the same pen as I lost.
1.当先行词被such/so/the same修饰时,用as 引导定语从句,在从 句中作主语或宾语。2.as引导非限制性定语从句，代替整个句
子或一件事，意为“正如,就像...”
11. It is the most interesting story that I have ever read.
1. Carol said the work would be done by October, which personally I doubt very mwuchhic. h引导非限制性定语从句，有时代指前面整个句子 2. Her bag, in which she put all her money, has been stolen. 3. The student to whom we were talking just now is the best student in our class. 4. Your speech was heard by a group of five judges, all ofwhomagreed that it was the best one this year.
既可指人表示“某人的”,也可指物，表示“某物的”
7. As you know, this is the day the quake happened 40 years ago.
8. This is so interesting a book as we all like.
9. Mandela is such a great black leader as we all admire very much.
介词之后的关系代词，指物ents allowed Ann to help John whose family was poor. 6. Yesterday Iwrheocsei是vewdhao的pa所rc有el格w,h在o从se句w中ei作gh定t w语a,s后v接er名y l词ig。ht.
1.当先行词被such/so/the same修饰时,用as 引导定语从句,在从 句中作主语或宾语。2.as引导非限制性定语从句，代替整个句
子或一件事，意为“正如,就像...”
11. It is the most interesting story that I have ever read.
1. Carol said the work would be done by October, which personally I doubt very mwuchhic. h引导非限制性定语从句，有时代指前面整个句子 2. Her bag, in which she put all her money, has been stolen. 3. The student to whom we were talking just now is the best student in our class. 4. Your speech was heard by a group of five judges, all ofwhomagreed that it was the best one this year.
既可指人表示“某人的”,也可指物，表示“某物的”
7. As you know, this is the day the quake happened 40 years ago.
8. This is so interesting a book as we all like.
9. Mandela is such a great black leader as we all admire very much.
介词之后的关系代词，指物ents allowed Ann to help John whose family was poor. 6. Yesterday Iwrheocsei是vewdhao的pa所rc有el格w,h在o从se句w中ei作gh定t w语a,s后v接er名y l词ig。ht.
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
关系代词：who, whom whose, which, that
关系副词：when, where,why
定语从句的位置
定语从句一定放在被修饰的成分之后。
e.g. This is the car which he bought last year. 先行词 定语从句
Do you know the doctor? He spoke just now.
Here arewthwosoep指ic电tu影re的s，th作at定a语re taken from the film . This is the film wwhhoosm指e nmaanm和ewiosmaTni，ta作nic宾.语
The man and the woman whom you see in the picture are Jack and Lucy . Jack anwdhoL指uchyeraor和e htehreoihneer，o 作an主d语the heroine who loved each other very much in the film .
He is the man. I told you about him.
He is the man (that/who/whom) I told you about.
5.whose 在定从中作定语，表所属关系， 翻译为“他的/她的/它的”，用来代替 his， her，their，its. whose指人也指物， 指物时 = of which 指人时 = of whom
Changzhou
a city
develop fast
Changzhou is a city ___w__h_ic_h__/t_h_a_t_d_e_v_e_l_o_ps _____f.ast
The city host(举办) 2oo8 Olympic Games Beijing
The city __w_h__ic__h_\_th__a_t_h__o_s_t_e_d__t_h_e__2_0_0_8_____ _O_l_y_m__p_i_c__G_a__m__e_s___ is Beijing. Beijing is the city __w_h__ic__h_\t_h__a_t_h_o__s_t_e_d__the 2008
___O__ly_m__p__ic__G__a_m__e_s_____________
定语从句
在复合句中，修饰某一名词或者代词用作定语的 句子就叫做定语从句。被定语从句修饰的词，叫 先行词。引导定语从句的词叫做“关__系__代__词__”或 “_关__系__副_词__”_。 引导定语从句的关联词有：
⑦ 当关系代词在从句中作表语时：
Mary is no longer the girl (that) she used to be. China is no longer the country that it used to be.
考点：as与which引导的定语从句
※对这两个词作如下归纳： 1、如果定语放主句后，即引用as也可以用which. He failed to the exam, as (=which) is natural. She seems a scientist, as (=which) in fact she is. Grammar is not a dead rule, which (=as) I have said before.
语法功能（做主语、宾语或定语） •第三选择合适的关系词
关系代词:
1. who指人,作主语或宾语 (作宾语可省略）
The man who I talked with is our teacher. 和我谈话的那个人，是我们的老师。
当先行词是 one, ones, anybody, anyone, all, none, those 等, 指人时一般用 who,不用 that。 e.g. Those who want to go to the cinema will have to wait at the gate of the school.
(whom, who, that) He is the student __________ you want to
see. 关系代词 that, which, whom 在从句中作 宾语时可省略掉。但放在介词后面时则 不可省略，有介词的时候不用that。
定语从句三步：
•第一找出先行词 •第二看先行词在定语从句中的
② 先行词被all, every, no, some, any, little, much修饰时：
I’ve read all the books (that) you gave me.
考点：that和which的选择
③先行词是序数词或形容词最高级修饰时。
T这hi是s is我the看be过st b的ook最(t好hat的) I’一ve 本eve书r re。ad. T这hi是s is他the用fir英st c文om写po的sitio第n (一tha篇t) h作e h文as。written in English.
a. All that can be done has been done. b. I am sure she has something (that) you can borrow. c. There is little (that) the enemy can do besides surrender.
Beckham is a football player.
He is handsome.
Beckham is a football player, _w_h_o__is__h_a_nd_s_o_m_e__. Beckham, _W_h_o_i_s_a__fo_o_t_b_al_l _p_la_y_e_r_ is handsome
He talked about the teachers and schools （that） he had visited.
考点：that和which的选择
⑥先行词是疑问词who, which, what 时，定语从句用that 而不用who, (whom)和which引导。 Who is the person that is standing at the gate? Which of us that knows something about physics does not know this? What that is on the table belongs to me?
高一英语必修一Unit4定语从句.
ThTehemmaanni_sw_hL_oi_u_rxa_in_a_tn_hg_e._f_a_s_te_s_t_ is LiLuiuxxiaiannggr. an the fastest.
Liuxiang is the man _w_h__o_r_a_n__t_h_e__fa_s_t_e. st
这是一本蓝色封面的书。
This is the book whcoovseer is blue. This is the book of wthheicchover is blue.
1. who指__人__,作___主_、__宾___（成分） 2. whom指__人__,作___宾______（成分）
3. which 指_物___，作__主__、_宾____（成分） 4. that 指_人_、__物_，作_主__、_宾_____（成分）
5.whose作_定__语__(成分)，表_所_属__关系，译 为“_他__的_/_她__的_/_它__的_”，，用来代替 H_i_s_/h_e_r_/t_h_eir./its whose指人也指物， 指物时 = o_f_w_h_ic_h__ 指人时 = _o_f_w_h_o_m__
2. whom指人,作宾语 (作宾语可省略, 如介词提前则不能省)
The man (whom/who) I nodded to is Mr. Li. 我对他点头的那个男人是李先生。
3. which 指物，作主语或宾语
(作宾语可省略, 如介词提前则不能省)
These are the trees which were planted last year. 这些是去年种植的树。
2、如果从句在主句前，这时要用as而不用which 引导定语从句。如：
As we all know, his parents were killed in the war.
As we all know, the earth is round.
考点：as与which引导的定语从句
3.用于the same…as…,such…as…， as…as…, so…as…中，一般用as。
刘翔
a boy， has a scar， forehead
The boy is Harry Porter. Harry Porter has a scar on his forehead.
Harry Porter is a boy __w_h_o_/t_h_a_t_h_a_s_ ___a_s_c_a_r_o_n__hi_s_f_o_r_e_h_ea_d__.
4. That is the man(_w_h_o_m__/_t_h_a_t__ we were looking for. )
考点：that和which的选择
(1) that指物时一般可以与which互换，但在下列情况 引导词只用that，不用which。
①当先行词为all, much, little, few, none, something, anything, everything, nothing等不定代词时，如：
如何选择关系代词? who ,whom, whose, which, that 口诀: 前看先行词, 辩清人或物 后看从句里, 有无主宾语
关系副词：when, where,why
定语从句的位置
定语从句一定放在被修饰的成分之后。
e.g. This is the car which he bought last year. 先行词 定语从句
Do you know the doctor? He spoke just now.
Here arewthwosoep指ic电tu影re的s，th作at定a语re taken from the film . This is the film wwhhoosm指e nmaanm和ewiosmaTni，ta作nic宾.语
The man and the woman whom you see in the picture are Jack and Lucy . Jack anwdhoL指uchyeraor和e htehreoihneer，o 作an主d语the heroine who loved each other very much in the film .
He is the man. I told you about him.
He is the man (that/who/whom) I told you about.
5.whose 在定从中作定语，表所属关系， 翻译为“他的/她的/它的”，用来代替 his， her，their，its. whose指人也指物， 指物时 = of which 指人时 = of whom
Changzhou
a city
develop fast
Changzhou is a city ___w__h_ic_h__/t_h_a_t_d_e_v_e_l_o_ps _____f.ast
The city host(举办) 2oo8 Olympic Games Beijing
The city __w_h__ic__h_\_th__a_t_h__o_s_t_e_d__t_h_e__2_0_0_8_____ _O_l_y_m__p_i_c__G_a__m__e_s___ is Beijing. Beijing is the city __w_h__ic__h_\t_h__a_t_h_o__s_t_e_d__the 2008
___O__ly_m__p__ic__G__a_m__e_s_____________
定语从句
在复合句中，修饰某一名词或者代词用作定语的 句子就叫做定语从句。被定语从句修饰的词，叫 先行词。引导定语从句的词叫做“关__系__代__词__”或 “_关__系__副_词__”_。 引导定语从句的关联词有：
⑦ 当关系代词在从句中作表语时：
Mary is no longer the girl (that) she used to be. China is no longer the country that it used to be.
考点：as与which引导的定语从句
※对这两个词作如下归纳： 1、如果定语放主句后，即引用as也可以用which. He failed to the exam, as (=which) is natural. She seems a scientist, as (=which) in fact she is. Grammar is not a dead rule, which (=as) I have said before.
语法功能（做主语、宾语或定语） •第三选择合适的关系词
关系代词:
1. who指人,作主语或宾语 (作宾语可省略）
The man who I talked with is our teacher. 和我谈话的那个人，是我们的老师。
当先行词是 one, ones, anybody, anyone, all, none, those 等, 指人时一般用 who,不用 that。 e.g. Those who want to go to the cinema will have to wait at the gate of the school.
(whom, who, that) He is the student __________ you want to
see. 关系代词 that, which, whom 在从句中作 宾语时可省略掉。但放在介词后面时则 不可省略，有介词的时候不用that。
定语从句三步：
•第一找出先行词 •第二看先行词在定语从句中的
② 先行词被all, every, no, some, any, little, much修饰时：
I’ve read all the books (that) you gave me.
考点：that和which的选择
③先行词是序数词或形容词最高级修饰时。
T这hi是s is我the看be过st b的ook最(t好hat的) I’一ve 本eve书r re。ad. T这hi是s is他the用fir英st c文om写po的sitio第n (一tha篇t) h作e h文as。written in English.
a. All that can be done has been done. b. I am sure she has something (that) you can borrow. c. There is little (that) the enemy can do besides surrender.
Beckham is a football player.
He is handsome.
Beckham is a football player, _w_h_o__is__h_a_nd_s_o_m_e__. Beckham, _W_h_o_i_s_a__fo_o_t_b_al_l _p_la_y_e_r_ is handsome
He talked about the teachers and schools （that） he had visited.
考点：that和which的选择
⑥先行词是疑问词who, which, what 时，定语从句用that 而不用who, (whom)和which引导。 Who is the person that is standing at the gate? Which of us that knows something about physics does not know this? What that is on the table belongs to me?
高一英语必修一Unit4定语从句.
ThTehemmaanni_sw_hL_oi_u_rxa_in_a_tn_hg_e._f_a_s_te_s_t_ is LiLuiuxxiaiannggr. an the fastest.
Liuxiang is the man _w_h__o_r_a_n__t_h_e__fa_s_t_e. st
这是一本蓝色封面的书。
This is the book whcoovseer is blue. This is the book of wthheicchover is blue.
1. who指__人__,作___主_、__宾___（成分） 2. whom指__人__,作___宾______（成分）
3. which 指_物___，作__主__、_宾____（成分） 4. that 指_人_、__物_，作_主__、_宾_____（成分）
5.whose作_定__语__(成分)，表_所_属__关系，译 为“_他__的_/_她__的_/_它__的_”，，用来代替 H_i_s_/h_e_r_/t_h_eir./its whose指人也指物， 指物时 = o_f_w_h_ic_h__ 指人时 = _o_f_w_h_o_m__
2. whom指人,作宾语 (作宾语可省略, 如介词提前则不能省)
The man (whom/who) I nodded to is Mr. Li. 我对他点头的那个男人是李先生。
3. which 指物，作主语或宾语
(作宾语可省略, 如介词提前则不能省)
These are the trees which were planted last year. 这些是去年种植的树。
2、如果从句在主句前，这时要用as而不用which 引导定语从句。如：
As we all know, his parents were killed in the war.
As we all know, the earth is round.
考点：as与which引导的定语从句
3.用于the same…as…,such…as…， as…as…, so…as…中，一般用as。
刘翔
a boy， has a scar， forehead
The boy is Harry Porter. Harry Porter has a scar on his forehead.
Harry Porter is a boy __w_h_o_/t_h_a_t_h_a_s_ ___a_s_c_a_r_o_n__hi_s_f_o_r_e_h_ea_d__.
4. That is the man(_w_h_o_m__/_t_h_a_t__ we were looking for. )
考点：that和which的选择
(1) that指物时一般可以与which互换，但在下列情况 引导词只用that，不用which。
①当先行词为all, much, little, few, none, something, anything, everything, nothing等不定代词时，如：
如何选择关系代词? who ,whom, whose, which, that 口诀: 前看先行词, 辩清人或物 后看从句里, 有无主宾语