where是用在地点状语从句里
that是人和物都可 作主语
Who只能用语人作主语
句子应分为三类分别是：简单句，并列句，复合句。主要判断依据是看谓语（形容主要人物（事物）做什么，怎么样的成分主要由动词充当），若只有一个谓语就是简单句，若有两个或以上谓语且由连词将这些谓语构成的句子连接起来的句子就是并列句。第三种就是你所说的从句即复合句，它分为三种：名词性从句，形容词性从句（定语从句），副词性从句（状语从句（状语就是说明事件发生的时间,地点,原因，结果等等的成分，像in the morning /at school）),而刚才提到的名词性从句又可分为：主语从句（像what you say makes（谓语动词，翻译成“让”）me(宾语，位于动词之后） happy, 此句的主语就是由what you say这个句子充当的，所以叫主语从句；第二个是表语从句(像the fact is what you say.(the faXcpsJct做主句的主语，is是系动词（am are也是），而系动词后的what you say就是表语，因为表语由句子来充当所以称为表语从句）；第三个是宾语从句（像he said what you did.句子做了谓语动词said的宾语)。第四个是同位语，这里只举个简单例子：It's the fact that the earth travels around the sun（事实就是地球围绕太阳转）（that在句中不做任何成分只起连接句子作用）。然后是定语（修饰是名词或代词的成分，如：beautiful flower 这个beautiful就是flower的定语）从句，这个定语从句中的从句所修饰的词成为先行词，引导定语从句的关联词称为关系代词（who whom whose that which等不定代词）或关系副词（where等），关系代词可在从句句中做主语，宾语，定语；关系副词做状语。
举例说明：
一.关联词是关系代词
1.人物定语从句
（1）.the student who answer the question was Jonh.(回答问题的学生是Jonh)此句主句是the student was Jonh.而从句who answer the question做the student的定语，说明Jonh是怎样的学生，关联词who在从句中有作主语（即回答问题的主体）。（修饰人的定语从句关联词只能用who，whom，whose）（在修是人的定语从句的从句中做主语，关联词只能用who和that）
（2）.the man whom I saw is Smith.（主句：the man is Smith.从句who I saw，whom做从句的宾语，这里whom被提前了其实是I saw sb( whom)。再作宾语时whom可换成who,也可以省略）
（3）.I looked for a student whose book was missing.（我在找一个书丢了的学生）（主句：I looking for a student.从句：whose book was missing.whose作book的定语。关联词在从句中作定语用whose或of whom）
2修饰事物的定语从句（大致与人一样）
（1）.a letter that（可换为which） is written in pencil is difficult to 搜趣网read.（用铅笔写的信很难读）（主句：a letter is difficult to read.从句：that is written in pencil.that在从句中作主语，可用which替换。）
（2）.the letter that I received from him yesterday is very impotant.（主句：the letter is very important.从句：that I received from him(I received that from him)that在从句中作宾语，可替换为which，也可省略）
（3）.I like the room whose window is big.（主句：I like the window.从句：whose window is big.whose在从句中作定语，可换为of which）
二.关联词是关系副词
关联词在从句中都作状语
he came last night when I was out.（昨晚他来时我出去了）
Is there a shop where I can get fruit?（附近有可以买到水果的商店吗？）
do you know the reason why he came late?（你知道他迟到的原因吗？）
回答者：匿名 9-6 18:25
主语表明这句话说的是谁和什么，主语主要由名词、代词或相当于名词的单词，短语或从句充当。
一. 名词作主语
David arrived last night. 大卫昨晚到达。
Pride goes before a fall. 骄必败。
二. 代词作主语
Who is speaking, please? （在电话中）请问您是谁？
That's OK. 这没问题。
三. 数词作主语
Two will be enough. 两个就够了。
Two-thirds of the workers are women. 三分之二的工人是女工。
四. ing形式作主语
Skating is good exercise. 溜冰是很好的运动。
Looking up all the new words in the dictionary took him a lot of time.
从字典里查所有的生词花费了他许多时间。
五. 不定式作主语
To translate this ideal into reality needs hard work.
把理想转变成现实需要辛勤的劳动。
六. 名词化的形容词作主语
The blind and the www.souquanme.comlame are well cared for in our country.
在我们国家，盲人和肢残人受到很好的照顾。
The unemployed usually lead a hard life.
失业的人生活一般很困难。
七. 短语作主语
How to do well is an important question.
如何把这件事做好是一个重要问题。
Early to bed and early to rise makes a man healthy.
早睡早起身体好。
八. 从句作主语
What has happened proves that our policy is right.
发生的一切证明我们的政策是对的。
Whether we'll go depends on the weather.
我们是否去要看天气。
谓语说明主语的动作或状态。谓语动词一般在主语之后。
Some children asked for cold drinks.
有些孩子要喝冷饮。
I shall go to see him tomorrow.
明天我要去看他。
I must ask her to teach me to swim.
我一定得请她教我游泳。
宾语一般用在及物动词的后面，表示行为动词所涉及的对象。
一. 名词作宾语
Show your passport, please.
请出示护照。
二. 代词作宾语
He didn't say anything.
她什么也没说。
三. 数词作宾语
How many do you want? - I want two.
你要几个？－ 我要两个。
四. 名词化的形容词作宾语
They sent the injured to hospital.
他们把伤员送到医院。
五. 不定式或ing形式作宾语
The asked to see my passport.
他们要求看我的护照。
I enjoy working with you.
我和你们一道工作很愉快。
六. 从句作宾语
Did you write down what he said?
你把他的话记下了没有？
定语
形容词作定语
He's a tall man.
他是个高个子的男子。
名词作定语
There are a lot of banana trees on the island.
岛上有许多香蕉树。
数词作定语
Three thousand people watched the game.
三万人观看了球赛。
限定词作定语
Many men are working there.
许多人在那儿工作。
-ing形式作定语
There is a swimming pool near our school.
我们学校附近有一个游泳池。
-ed分词作定语
frozen food 冷冻食品
fallen leaves 落叶
状语
副词作状语
Don't drive so fast.
别开得这么快。
介词短语作地点状语
We live in Hangzhou.
我们住在杭州。
名词作状语
The meeting lasted an hour.
会议开了一个小时。
接在动词之后对主语起着解释或描述作用的成分，叫作主补。
形容词作主补
They married young. 他们结婚时还年轻。
He died happy. 他怀着幸福的心情死去。
No man is born wise. 没有生而知之。
ed分词作主补
He came in drunk. 他走进来的时候醉醺醺的。
名词作主补
He died a poor man. 他死时很穷。
He died a millionaire. 他死的时候是个百万富翁。
宾补
适用宾补的句型：
主语+谓语+宾语+宾补.宾补对宾语加以解释或描述。
以下成分可以充当宾补：名词，代词，形容词，副词，ing形式，ed分词，不定式，介词短语，名词性从句。
名词作宾补
I consider him a gentleman.
代词作宾补
Whom do you think me? （Whom是宾补）
形容词作宾补
Wash your hands clean.
副词作宾补
I found him out.
-ing形式作宾补
They left me wait.
-ed分词作宾补
I heard my name called.
不定式作宾补
I thought him to be a good man.
介词短语作宾补
Make yourself at home.
名词性从句作宾补
His wife has made him what he is .

定语从句及相关术语
1.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，一般紧跟在它所修饰的先行词后面。
2.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；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。
3.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。
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（一） 限定性定语从句
一、关系代词
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 your book （which）you want。]而且，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
2. which作宾语时，根据先行词与定语从句之间的语义关系，先行词与which之间的介词不能丢
3. 代表物时多用which，但在带有下列词的句子中用that而不用which，这些词包括当先行词是anything, everything, nothing ,few, all, none, little, some等不定代词时，或者是由every, any, all, some, no, little, few, much等修饰时等，这时的that常被省略还有先行词前有序数词或形容词最高级修饰时,或先行词就是序数词或最高级时.以及先行词中既有人又有物时.还有句中前面有which时,都只能用that
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
二、关系副词
关系副词=介词+关系代词
why=for which
where=to which
when=during which
whose=of which
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 you arrive in London, we will have stayed there for two weeks. I still remember the first time I met her. Each time he goes to business trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
3. 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.
4. 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。
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（二）非限定性定语从句
非限定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
1. which引导的非限定性定语从句来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或物主代词和指示代词所修饰时，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.非限制性定语从句还能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代表事物.；
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（三）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 on the bus.
(2) Mr.搜趣网 Ling is just the boy whom I want to see.
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.
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.
(3) 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.
(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。
在定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 to visit the city each year rises 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 fallen in.whose指物时，常用以下结构来代替
(3) The classroom whose door is broken will soon be repaired.
(4) The classroom the door of which is broken will soon be repaired.
(5) Do you like the book whose color is yellow?
(6) Do you like the book the color of which is yellow?
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（四）注意
介词+关系代词引导的定语从句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.
(3) Tomorrow I will bring here a magazine (that/which) you asked for.
(4) Tomorrow I will bring here a magazine for which you asked.
(5) We’ll go to hear the famous singer (whom/that/who) we have often talked about.
(6) We’ll go to hear the famous singer about whom we have often talked.
注意：1. 含有介词的动词短语一般不拆开使用，如：look for, look after, take care of等
(1) This is the watch which/that I am looking for. (T＝正确)
(2) This is the watch for which I am looking. (F＝错误)
2. 若介词放在关系代词前，关系代词指人时用whom，不可用who或者that；指物时用which，不能用that；关系代词是所有格时用whose
(1) The man with whom you talked is my friend. (T)
(2) The man with that you talked is my friend. (F)
(3) The plane in which we flew to Canada is very comfortable. (T)
(4) The plane in that we flew in to Canada is very comfortable. (F)
3. “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 very kind to him.
(2) In the basket there are quite many apples, some of which have gone bad.
(3) There are forty students in our class in all, most of whom are from big cities.
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（五）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
(1) I still remember the day when I first came to the school.
(2) The time when we got together finally came.
2. where指地点，在定语从句中做地点状语
(1) Shanghai is the city where I was born.
(2) The house where I lived ten years ago has been pulled down.
3. why指原因，在定语从句中做原因状语
(1) Please tell me the reason why you missed the plane.
(2) I don’t know the reason why he looks unhappy today.
注意：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
(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 what he wanted when he grew up.
(3) Great changes have taken place in the city in which./where I was born.
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（六）判断关系代词与关系副词
方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。不及物动词后面无宾语，就必须要求用关系副词或者是介词加关系代词；而及物动词后接宾语，则要求用关系代词。例如：
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；用不同的颜色表示出。）
（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.
习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。
方法二： 准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 ago?
A. where B. that C. on which D. the one
例2. Is this the museum ____ the exhibition was held?
A. where B. that C. on which D. the one答案：
例1 D，例2 A
例1变为肯定句： This museum is ___ you visited a few days ago.例2变为肯定句： This is the museum ___ the exhibition was held.
在句1中，所缺部分为宾语，而where, that, on which都不能起到宾语的作用，只有the one既做了主句的表语，又可做从句的宾语，可以省略关系代词，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点，既可用副词where，又因 in the museum词组，可用介词in + which 引导地点状语。而此题中，介词on 用的不对，所以选A。
关系词的选择依据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 地点状语，when 时间状语，why 原因状语) 。
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（七）介词+关系词
1）介词后面的关系词不能省略。
2）that前不能有介词。
3） 某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when ,where和why 互换。 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?
This is the reason why he came late.
This is the reason for which he came late.
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（八）先行词和关系词二合一
1)Whoever spits in public will be punished here. (Whoever 可以用 anyone who 代替) 2)The parents will use what they have to send their son to technical school. (what 可以用all that代替)
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（九）as,which引导的非限定性定语从句
由as, which 引导的非限定性定语从句，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. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选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可代替句子，用于非限定性定语从句，而what不可。That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起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在引导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，且在定语从句中都可以作主语和宾语。但不同之处主要有两点：
(1） as 引导的定语从句可置于句首，而which不可。
(2） as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词；若为行为动词，则从句中的关系代词只能用which.。
在本题中，prevent由于是行为动词，所以正确选项应为B。
As 的用法例
1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。
I have got into the same trouble as he (has).
例2. as可引导非限制性从句，常带有'正如'。
As we know, smoking is harmful to one's health.
As is known, 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，它充当从句的主语，谓语动词know要用被动式。
一、“as / which” 特殊定语从句的先行成分
1. 形容词或形容词短语作先行成分, 具有形容词意义的介词短语也可以充当先行成分，如：
My grandmother’s house was always of great importance to me, as my own is.
在一定的语言环境里，有些名词可以具有形容词的性质。这些名词主要是那些表示人的身份、职业、状态的名词。值得一提的是，在这些具有形容词性质的名词之后，引导定语从句的关系代词不能用who / whom.
2. 动词短语先行成分
这种动词短语既可是限定形式也可是非限定形式。如果是动态动词短语，它们在从句中就一般有限定或非限定形式的替代动词do和as / which一起代替。do可以出现，也可以不出现，但不能用其它动词代替。
3. 句子作先行成分
这句子可以是整个主句也可以只是主句中的一个从句。有时是连续几个句子，有时甚至可以是一个完整的故事。
二、“as/which”特殊定语从句在句中的位置
由于先行成分的构成成分不同，“as/which”特殊定语从句在句中的位置有以下几种情况：
1. 形容词做先行成分时：形容词或形容词短语（含具有形容词性质的名词）作先行成分，“as / which”特殊定语从句置于先行成分之后。
2. 动词短语作先行成分时：动词短语作先行成分时，“as / which”特殊定语从句置于先行成分之后。但是，当从句中含有表示主观意志的插入成分时，“as”特殊定语从句可以移至句子之首。
3. 句子作先行成分时：“as”特殊定语从句的位置较灵活，可以置于先行成分之前、之中或之后。但如果先行成分是直接引语，“as”特殊定语从句多在先行成分之前。如果先行成分是否定句，“as”特殊定语从句与否定词的相对位置不同可以使它产生不同的意义。由于“as”特殊定语从句具有这一特点，所以有时它的位置不能随便移动。在非正式的文体里，“which”特殊定语从句可以出现在先行成分之中。
三、“as/which”特殊定语从句的语义功能
一般说来，as与which的语义功能相同，可以相互替换。但先行成分为句子时，它们的语义功能则有差异。
1. 表示结果
表示结果的特殊定语从句与其先行成分之间存在着一定的因果关系，从句中往往使用有结果意义的词，如动词result, make, enable, cause和形容词interesting, surprising, delightful, disgraceful等。
2. 表示评注
表示评注的特殊定语从句对其先行成分所述事实的正确性有肯定的倾向，它通常与那些表示客观事实，普遍真理或某种习性的先行成分连用；从句中则常用一些表示“合乎自然规律”、“众所周知”或“经常发生”等意义的词语，如natural, known to all, usual等。
3. 有无状语意义
“as”特殊定语从句具有状语意义（主要是方式状语意义），而“which”特殊定语从句则无状语意义。“as”特殊定语从句的状语意义要求它在语义上与其先行成分的语义保持一致，“which”特殊定语从句则不受这种限制。
四、关系代词as与which的句法功能
1. as / which 在特殊定语从句中作主语。
as作主语时，谓语动词常为连系动词（主要是be, seem），主语补语为usual、 a rule、 a matter of fact等时，系动词be习惯经常省略。行为动词作“as”特殊定语从句的谓语时一般用于被动语态（其中助动词be常略），不及物的行为动词在“as”特殊定语从句中作谓语的极少，常见的有happen一词。如：
Freddie, as might be expected, was attending the conference.
Which作主语时，谓语动词不限，主语被动皆可，只是谓语动词为被动语态时助动词be省略。
2. as和which都可以在特殊定语从句中宾语。
3. as和 which在特殊定语从句中作补语。如：
We thought him a gentleman, as/which he could never be.
“as”特殊定语从句中可以主谓倒装，“which”从句中则不能主谓倒装。
如果先行成分不是主语补语或宾语补语，关系代词用which而不用as。如：
He talked like a native, which/as he hardly was.
4. which在特殊从定语句中作定语。
which可以在特殊定语从句中作定语，修饰fact, matter, thing 等名词。这些名词代表先行成分表达的意义，有时将其略去句义仍然完整。as不能作定语。如：
I was told to go not by train but bus, which advice I followed.
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（十）关系代词that 的用法
(1)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, Is very famous here.
(b) 介词后不能用。
We depend on the land from which we get our food.
We depend on the land that/which we get our food from.
(2) 只能用that作为定语从句的关系代词的情况
(a) 在there be 句型中，只用that，不用which。
(b) 在不定代词，如：anything, nothing, the one, all, much, few, any, little等作先行词时，只用that，不用which。
(c) 先行词有the only, the very,the same,the last,just修饰时，只用that。
(d) 先行词为序数词、数词、形容词最高级时，只用that。.

Is this the book which she is looking for?
指物时，下列情况下只能用that ，不宜用which。
（1）先行词为不定代词，如All、much、anything、everything、nothing、something、none、the one等。
We are willing to do anything that is good to the people.
I have told them all (that) I know.
All that can be done has been done.
（2）先行词是序数词或被序数词、修饰时。
The first book that I read last night was an English novel.
（3）先行词是形容词最高级或被最高级修饰时。
This is one of the most interesting films that I have ever seen.
This is the best that can be done now.
（4）如果有两个或两个以上分别表示人和物的先行词时(先行词既有人又有物)，定语从句的关系代词用which和who都不合适，只能用that。
We know nothing about the doctors and the hospitals that you are talking about.
There are sheep and men that can be seen on the hill.
（5）如果先行词被the only、the very、the last、the same、any、 few 、little、no、 all 、one of、 just修饰时。
This is the only book that can be lent to you.
（6）当主句是以which开头的特殊问句时，关系代词只用that。
Which is the dictionary that he used yesterday ?
D．只物时，下列情况下只能用which，不宜用that。
（1）关系代词放在介词之后
This is the factory in which we once worked.
（2）非限制性定语从句中
This is the book, which is written by Lu Xun.
（3）that，Those作主语时
Those which are on the desk are English books.