Ⅰ 英語定語從句的講解，詳細一點再有點典型例句難一點，(九年級)
一.定語從句及相關術語
1.定語從句：修飾一個名詞或代詞的從句稱為定語從句，一般緊跟在它所修飾的先行詞後面。
2.關系詞：引導定語從句的關聯詞成為關系詞
關系詞有關系代詞和關系副詞。關系代詞有that, which, who, whom, whose, as 等；
關系副詞有where, when, why等。
關系詞常有3個作用：1，引導定語從句。2，代替先行詞。3，在定語從句中擔當一個成分。
二.關系代詞引導的定語從句
1.who指人，在從句中做主語
(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，在定語從句中充當賓語，常可省略。
(1) mr. liu is the person (whom) you talked about on the bus.
(2) mr. ling is just the boy whom i want to see.
注意：關系代詞whom在口語和非正式語體中常用who代替，可省略。
(3) the man who/whom you met just now is my friend.
3. which指物，在定語從句中做主語或者賓語，做賓語時可省略
(1) football is a game which is liked by most boys.
(2) this is the pen (which) he bought yesterday.
4. that指人時，相當於who 或者whom；指物時，相當於which。在賓語從句中做主語或者賓語，做賓語時可省略。
(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，在定語從句中做定語
(1) he has a friend whose father is a doctor.
(2) i once lived in a house whose roof has fallen in.
whose指物時，常用以下結構來代替
(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 cover is yellow?
(6) do you like the book the color of which is yellow?
三.介詞+關系代詞引導的定語從句
關系代詞在定語從句中做介詞賓語時，從句常由介詞+關系代詞引導
(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. 含有介詞的動詞短語一般不拆開使用，如：look for, look after, take care of等
(1) this is the watch which/that i am looking for. (t)
(2) this is the watch for which i am looking. (f)
2. 若介詞放在關系代詞前，關系代詞指人時用whom，不可用who或者that；指物時用which，不能用that；關系代詞是所有格時用whose
(1) the man with whom you talked is my friend. (t)
(2) the man who/that you talked with 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.「介詞+關系代詞」前可有some, any, none, both, all, neither, most, each, few等代詞或者數詞
(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.
解答"介詞+關系代詞 "類型的定語從句題時，關鍵在於分析定語從句中的謂語動詞（該動詞是不及物動詞）習慣上常與什麼介詞搭配使用。這就需要同學們在平時學習時要注重某些不及物動詞和介詞慣用的情形，並要靈活運用。例如：
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
簡析:本題定語從句中的turn 與介詞 to 構成固定短語"turn to sb. for help (向某人求助）"。所以，d是正確選項。
四．關系副詞引導的定語從句
1. when指時間，在定語從句中做時間狀語
(1) i still remember the day when i first came to the school.
(2) the time when we got together finally came.
2. where指地點，在定語從句中做地點狀語
(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，在定語從句中做原因狀語
(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：關系副詞引導的從句可以由「介詞+關系代詞」引導的從句替換
(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.
關系副詞when, where, why的含義相當於"介詞+ which"結構，因此常常和"介詞+ which"結構交替使用，例如：
there are occasions when (on which) one must yield. 任何人都有不得不屈服的時候。
beijing is the place where (in which) i was born. 北京是我的出生地。
is this the reason why (for which) he refused our offer? 這就是他拒絕我們幫助他的理由嗎？
五．限制性定語從句和非限制性定語從句
限制性定語從句舉例：
(1) the teacher told me that tom was the only person that i could depend on.
(2) china is a country which has a long history.
非限制性定語從句舉例：
(1) his mother, who loves him very much, is strict with him.
(2) china, which was founded in 1949, is becoming more and more powerful.
要注意區分以下幾個句子的不同
(1) his brother who is now a doctor always encourages him to go to college.
他那當醫生的哥哥常鼓勵他要考上大學。（他還有其他的哥哥）
(2) his brother, who is now a doctor, always encourages him to go to college.
他的哥哥是當醫生的，常鼓勵他要考上大學。（他只有一個哥哥）
難點分析
（一）限制性定語從句只能用that 的幾種情況
1．當先行詞是anything, everything, nothing (something 除外), few, all, none, little, some 等代詞時，或者是由every, any, all, some, no, little, few, much 等修飾時
(1) have you taken down everything that mr. li has said?
(2) there seems to be nothing that seems impossible for him in the world.
(3) all that can be done has been done.
(4) there is little that i can do for you.
注意：當先行詞指人時，偶爾也可以用who
(4) any man that/.who has a sense of ty won't do such a thing.
2. 當先行詞被序數詞修飾
(1) the first place that they visited in london was the big ben.
3. 當先行詞被形容詞最高級修飾時
(1) this is the best film that i have seen.
4. 當形容詞被the very, the only修飾時
(1) this is the very dictionary that i want to buy,
(2) after the fire in his house, the old car is the only thing that he owned.
當先行詞指人時，偶爾也可以用who
(3) wang hua is the only person in our school who will attend the meeting/
5. 當先行詞前面有who, which等疑問代詞時
(1) who is the man that is standing there?
(2) which is the t-shirt that fits me most?
6. 當先行詞既有人，也有動物或者物體時
(1) can you remember the scientist and his theory that we have learned?
（二）關系代詞as和which 引導的定語從句
as和which引導非限制性定語從句，有相同之處也有不同之處。具體情況是：
1．as和which都可以在定語從句中做主語或者賓語，代表前面整個句子。
(1) he married her, as/which was natural.
(2) he was honest, as/which we can see.
2. as引導非限制性定語從句，可放在主句之前，或者主句之後，甚至可以切割一個主句；which引導的非限制性定語從句只能放在主句之後。另外，as有「正如……，正像……」的意思
(1) as is known to all, china is a developing country.
(2) he is from the south, as we can see from his accent.
(3) john, as you know, is a famous writer.
(4) he has been to paris more than several times, which i don't believe.
注意：當主句和從句存在邏輯上的因果關系時，常用which
(5) tom was always late for school, which made his teacher angry.
3. 當先行次受such, the same修飾時，常用as
(1) i have never heard such a story as he tells.
(2) he is not such a fool as he looks.
(3) this is the same book as i lost last week.
注意：當先行次由the same修飾時，偶爾也用that引導定語從句，但是和由as 所引導的定語從句意思不同
(4) she wore the same dress that she wore at mary's wedding.
她穿著她在mary婚禮上穿過的一條裙子。
(5) she wore the same dress as her young sister wore.
她穿著和她妹妹所穿的一樣的裙子。
（三）以the way為先行詞的定語從句通常由in which, that引導，而且通常可以省略。
(1) the way in which/ that/./ he answered the question was surprising.
Ⅱ 九年級英語關於定語從句
定語從句（Attributive Clauses）在句中做定語，修飾一個名詞或代詞，被修飾的名詞,片語或代詞即先行詞。定語從句通常出現在先行詞之後，由關系詞（關系代詞或關系副詞）引出。
1.定語從句：定語從句是由關系代詞或關系副詞引導的從句，其作用是作定語修飾主句的某個名詞性成分，相當於形容詞，所以又稱為形容詞性從句，一般緊跟在它所修飾的先行詞後面。
2.關系詞：引導定語從句的關聯詞稱為關系詞，關系詞有關系代詞和關系副詞。關系代詞有that, which, who, whom, whose, as等；關系副詞有where, when, why等。關系詞常有3個作用：1，引導定語從句。2，代替先行詞。3，在定語從句中擔當一個成分。
註：關系代詞有主語.賓語之分。一般whom作為賓語。
4.定語：定語用來限定、修飾名詞或代詞的，是對名詞或代詞起修飾、限定作用的詞、短語或句子，漢語中常用『……的』表示。主要由形容詞擔任。此外，名詞，代詞，數詞，分詞，副詞，不定式以及介詞短語也可以來擔任，也可以由一個句子來擔任．單詞作定語時通常放在它所修飾的詞之前，作前置定語。短語和從句作定語時則放在所修飾的詞之後，作後置定語。
先行詞：被定語從句修飾的名詞、代詞稱為先行詞。
關系代詞引導的定語從句舉例。
關系代詞所代替的先行詞是人或物的名詞或代詞，並在句中充當主語、賓語、定語等成分。關系代詞在定語從句中作主語時，從句謂語動詞的人稱和數要和先行詞保持一致。
1、who, whom, that
這些詞代替的先行詞是人的名詞或代詞，在從句中所起作用如下：
(1) Is he the man who/that wants to see you? 他就是想見你的人嗎？（who/that在從句中作主語）
(2) He is the man whom/ that I saw yesterday. 他就是我昨天見的那個人。（whom/that在從句中作賓語）
2、Whose 用來指人或物，(只用作定語, 若指物，它還可以同of which互換）
(1) They rushed over to help the man whose car had broken down. 那人車壞了，大家都跑過去幫忙。
(2) Please pass me the book whose (of which) cover is green.請遞給我那本綠皮的書。
3、 which, that 它們所代替的先行詞是事物的名詞或代詞，在從句中可作主語、賓語等，例如：
(1) A prosperity which / that had never been seen before appears in the countryside. 農村出現了前所未有的繁榮。（which / that在句中作主語）
(2) The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作賓語） [編輯本段]（一） 限定性定語從句一、關系代詞（在句中作主語、賓語或定語）
1. that既可代表事物也可代表人，which代表事物；它們在從句中作主語或賓語，that在從句中作賓語時常可省略關系詞，which在從句中作賓語也可以省略。[eg：this is the book （which）you want。]
2而且，如果which在從句中作「不及物動詞＋介詞」的介詞的賓語，注意介詞不要丟掉，而且介詞總是放在關系代詞which的前邊，但有的則放在它原來的位置
3. 代表物時多用which，但在帶有下列詞的句子中用that而不用which，這些詞包括當先行詞是anything, everything, nothing , none等不定代詞時，或者是由every, any, all, some, no, little, few, much等修飾時等，這時的that常被省略 還有先行詞前有序數詞或形容詞最高級修飾時,或先行詞就是序數詞或最高級時.以及先行詞中既有人又有物時.還有句中前面有which時,都只能用that
4. who和whom引導的從句用來修飾人，分別作從句中的主語和賓語，whom作賓語時，要注意它可以作動詞的賓語也可以作介詞的賓語
5. whose是關系代詞，修飾名詞作定語，相當於所修飾成分的前置所有格.它引導的從句可以修飾人和物, 當它引導的從句修飾物體時, 可以與 of which 調換,表達的意思一樣。
二、關系副詞（在句中作狀語）
關系副詞=介詞+關系代詞
why=for which
where=in/ at/ on/ ... which (介詞同先行詞搭配)
when=ring/ on/ in/ ... which (介詞同先行詞搭配)
1. where是關系副詞，用來表示地點的定語從句。
2. when引導定語從句表示時間［注］值得一提的是，表示時間「time"一詞的定語從句只用when引導，有時不用任何關系代詞，當然也不用that引導。
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 towels, soap, toothbrush etc。
3. 當從句的邏輯主語是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing時，常用there is來引導
There is somebody here who wants to speak to you. 這里有人要和你說話。 [編輯本段]（二）非限定性定語從句非限定性定語從句的作用是對所修飾的成分作進一步說明，通常是引導詞和先行詞之間用逗號隔開，將從句拿掉後其他部分仍可成立
1. which引導的非限定性定語從句來說明前面整個句子的情況或主句的某一部分
2.當先行詞是專有名詞或物主代詞和指示代詞所修飾時，其後的定語從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，他曾經是我的老師。
My house, which I bought last year, has got a lovely garden.我去年買的的那幢房子帶著個漂亮的花園。
This novel, which I have read three times, is very touching. 這本小說很動人，我已經讀了三遍。
3.非限制性定語從句還能將整個主句作為先行詞, 對其進行修飾, 這時從句謂語動詞要用第三人稱單數，例如：
He seems not to have grasped what I meant, which greatly upsets me. 他似乎沒抓住我的意思，這使我心煩。
Liquid water changes to vapor, which is called evaporation. 液態水變為蒸汽，這就叫做蒸發。
4. 有時as也可用作關系代詞
5. 在非限定性定語從句中，不能用關系副詞why和關系代詞that，而用who, whom代表人，用which,whose代表事物.； [編輯本段]（三）關系代詞引導的定語從句1.who指人在從句中做主語
(1) The boys who are playing football are from Class One. 在踢足球的男孩們是一班的.
(2) Yesterday I helped an old man who lost his way. 昨天，我幫助了一個迷路的老人.
2. whom指人，在定語從句中充當賓語，常省略。（註：who和whom已無太大區別，基本可以通用。唯一區別是who可以做主語而whom不可以。）
(1) Mr. Liu is the person (whom) you talked with on the bus. 劉先生就是在公交車上和你聊天的那個人.
(2) Mr. Ling is just the boy whom I want to see. 凌先生恰巧就是我想見的那個男孩.
(3) The man who/whom you met just now is my friend. 你剛剛見到的那個人就是我的朋友.
注意：關系代詞whom在口語和非正式語體中常用who代替，可省略。
如果在從句中做賓語,就用whom或who.比如: He is the man whom/who I talk to. 他就是那個和我聊天的男人.
如果是在從句中作主語就只能用who.比如: He is the man who has an English book. 他就是那個有英語書的男人.
3.which指物，在定語從句中做主語或者賓語，做賓語時可省略。
(1) Football is a game which is liked by most boys. 足球是大多數男孩都喜歡的游戲.
(2) This is the pen (which) he bought yesterday. 這是他昨天剛買的鋼筆.
4. that指人時，相當於who或者whom；指物時，相當於which。
在定語從句中做主語或者賓語，做賓語時可省略。
(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，在定語從句中做定語。
(1) He has a friend whose father is a doctor.
(2) I once lived in a house whose roof has fallen in.whose指物時，常用以下結構來代替
(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? [編輯本段]（四）注意介詞+關系代詞引導的定語從句關系代詞在定語從句中做介詞賓語時
從句常由介詞+關系代詞引導
(1) The school (that/which) he once studied in is very famous.
= The school in which he once studied is very famous.
(2) Tomorrow I will bring here a magazine (that/which) you asked for.
= Tomorrow I will bring here a magazine for which you asked.
(3) We』ll go to hear the famous singer (whom/that/who) we have often talked about.
= We』ll go to hear the famous singer about whom we have often talked.
注意：1. 含有介詞的動詞短語一般不拆開使用，如：look for, look after, take care of等
T This is the watch which/that I am looking for. (T＝正確)
F This is the watch for which I am looking. (F＝錯誤)
2. 若介詞放在關系代詞前，關系代詞指人時用whom，不可用who或者that；指物時用which，不能用that；關系代詞是所有格時用whose
(1) The man with whom you talked is my friend. (T)
The man with that you talked is my friend. (F)
(2) The plane in which we flew to Canada is very comfortable. (T)
The plane in that we flew in to Canada is very comfortable. (F)
3. 「介詞+關系代詞」前可有some, any, none, both, all, neither, most, each, few等代詞或者數詞
(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.
關系代詞
關系代詞（一般情況下）that 可用who ,whom 和which在從句做主語，謂動詞的賓語，但是不能做介詞的賓語。
which指物，在從句中作主語，謂語或賓語；
who在從句中作主語；
whom在從句中賓語；
where在從句中修飾表地點的名詞，做地點狀語；
when在從句中通常修飾表時間的名詞，做時間狀語；
why在從句中做原因狀語，先行詞通常是"reason"
有時why也可用for+which代替。
例：A doctor is a person who looks after people's health.
______ _ _____ _____________________
主語 謂語 先行詞 從句
|________________________|
定語從句修飾先行詞 [編輯本段]（五）關系副詞引導的定語從句1. when指時間，在定語從句中做時間狀語
(1) I still remember the day when I first came to the school.
(2) The time when we got together finally came.
2. where指地點，在定語從句中做地點狀語
(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，在定語從句中做原因狀語
(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：關系副詞引導的從句可以由「介詞+關系代詞」引導的從句替換
(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. [編輯本段]（六）判斷關系代詞與關系副詞方法一： 用關系代詞，還是關系副詞完全取決於從句中的謂語動詞。不及物動詞後面無賓語，就必須要求用關系副詞或者是介詞加關系代詞；而及物動詞後接賓語，則要求用關系代詞。例如：
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
判斷改錯（註：先顯示題，再顯示答案，橫線；用不同的顏色表示出。）
（錯） This is the mountain village where I visited last year.
（錯） I will never forget the days when I spent in the countryside.
（對） This is the mountain village (which) I visited last year.
（對） I'll never forget the days (which) I spent in the countryside.
習慣上總把表地點或時間的名詞與關系副詞 where, when聯系在一起。此兩題錯在關系詞的誤用上。
方法二： 准確判斷先行詞在定語從句中的成分(主、謂、賓、定、狀)，也能正確選擇出關系代詞/關系副詞。例1. Is this museum ___ you visited a few days ago?
A. whereB. thatC. on whichD. the one
例2. Is this the museum ____ the exhibition was held?
A. whereB. thatC. on whichD. the one答案：
例1 D，例2 A
例1變為肯定句： This museum is ___ you visited a few days ago.例2變為肯定句： This is the museum ___ the exhibition was held.
在句1中，is後應跟表語，只有the one可以，而後面的you visited a few days ago則做one的定語從句。
而句2中, 主、謂、賓俱全，從句部分為句子的狀語表地點，既可用副詞where，又因 in the museum片語，可用介詞in + which 引導地點狀語。而此題中，介詞on 用的不對，所以選A。
關系詞的選擇依據在從句中所做的成分，先行詞在從句中做主、定、賓語時，選擇關系代詞 (who, whom, that, which, whose)；
先行詞在從句中做狀語時，應選擇關系副詞 ( where 地點狀語，when 時間狀語，why 原因狀語) 。 [編輯本段]（七）介詞+關系詞1）介詞後面的關系詞不能省略。
2）that前不能有介詞。
3） 某些在從句中充當時間，地點或原因狀語的"介詞+關系詞"結構可以同關系副詞when ,where和why 互換。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. [編輯本段]（八）先行詞和關系詞二合一1)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)
但這兩句句子已經不是定語從句了，是名詞性從句。因為定語從句一定要有先行詞，而名詞性從句沒有。將「Whoever」、「what」分別用「Anyone who」、「all that」代替後，才是定語從句，先行詞分別是「Anyone」、「all」。 [編輯本段]（九）as,which引導的非限制性定語從句由as, which 引導的非限定性定語從句，as和which可代整個主句，相當於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.
Ⅲ 英語定語從句講解（詳細一點的）和好題（難一點的）（九年級的）
定語從句（Attributive Clauses）在句中做定語，修飾一個名詞或代詞，被修飾的名詞,片語或代詞即先行詞。定語從句通常出現在先行詞之後，由關系詞（關系代詞或關系副詞）引出。
定語從句功能及位置
功能：定語從句相當於形容詞，修飾名詞或代詞，在句中作定語。
位置：定語從句置於被修飾詞之後。
例：Those who are willing to attend the party , sign your names here please.
定語從句是由關系代詞或關系副詞引導的從句，其作用是作定語修飾主句的某個名詞性成分，相當於形容詞，所以又稱為形容詞性從句，一般跟在它所修飾的先行詞後面。(定語從句的概念:在復合句中,修飾某一名詞或代詞的從句叫做定語從句.被修飾的名詞或代詞叫做先行詞,定語從句一般放在先行詞的後面.）
關系詞:
引導定語從句的關聯詞稱為關系詞，關系詞有關系代詞和關系副詞。關系代詞有that, which, who, whom, whose, as等，絕對沒有what；關系副詞有where, when, why,how等。關系詞常有3個作用：
①連接作用，引導定語從句。
②代替主句中的先行詞，甚至可能是主句中的一部分或者整個主句。
③在定語從句中充當一句子成分。
註：關系代詞有主語、賓語之分。一般whom作為賓語。關系代詞在從句中作主語，賓語，表語，定語等，關系副詞在從句中作地點狀語，時間狀語，原因狀語等。
先行詞:
被定語從句修飾的名詞、代詞稱為先行詞。如The man The book
關系代詞引導的定語從句舉例
關系代詞所代替的先行詞是人或物的名詞或代詞，並在從句中充當主語、賓語、定語等成分。關系代詞在定語從句中作主語時，從句謂語動詞的人稱和數要和先行詞保持一致。
1,who, whom, that
這些詞代替的先行詞是人的名詞或代詞，who作主語指人，whom作賓語指人，that既可作主語又可作賓語（作賓語可以省略），可以指人也可以指物。在從句中所起作用如下：
(1) Is he the man who/that wants to see you? 他是那個想見你的男人嗎？（who/that在從句中作主語）
(2) He is the man whom/ that I saw yesterday. 他就是我昨天見的那個人。（whom/that在從句中作賓語）
（3）The man whom you spoke to just now is our English teacher 你剛剛說話的那個男人是我們的英語老師
2,Whose 用來指人或物
(只用作定語, 若指物，它還可以同of which互換，指人的時候也可以用of whom 代替）
(1) They rushed over to help the man whose car had broken down. 那人車壞了，大家都跑過去幫忙。
(2) Please pass me the book whose color (the color of which) is green.請遞給我那本綠皮的書。
(3) The man whose son is a doctor is our professor. 那個兒子是醫生的男人是我們的教授。
3,which, that
它們所代替的先行詞是事物的名詞或代詞，在從句中可作主語、賓語等，作賓語時可以省略，例如：
(1)Prosperity which / that had never been seen before appears in the countryside. 農村出現了前所未有的繁榮。（which / that在從句中作主語）
(2) The package (which / that) you are carrying is about to come unwrapped. 你拿那個包裹快要散開了。(which / that在從句中作賓語）
4,as
as 可以做主語，也可以作賓語，作賓語時一般不省略，指人或者物。常與such as,the same as等短語連用。
5，as與which的區別
①as可以放在句首，而which不行
②as表示主觀，which表示客觀事實
③as引導非限制性定語從句
關系副詞引導的定語從句
when指時間
在定語從句中做時間狀語也可做連接詞用
(1) I still remember the day when I first came to the school.
(2) The time when we got together finally came.
where指地點
在定語從句中做地點狀語
(1) Shanghai is the city where I was born.
(2) The house where I lived ten years ago has been pulled down.
why指原因
在定語從句中做原因狀語
(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：關系副詞引導的從句可以由「介詞+關系代詞」引導的從句替換
(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.
先行詞和關系詞
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)
但這兩句句子已經不是定語從句了，是名詞性從句。因為定語從句一定要有先行詞，而名詞性從句沒有。將「Whoever」、「what」分別用「Anyone who」、「all that」代替後，才是定語從句，先行詞分別是「Anyone」、「all」。
由as, which 引導的非限定性定語從句，as和which可代整個主句，相當於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.
典型例題
1）Alice received an invitation from her boss, ___came as a surprise.
A. itB. thatC. whichD. he
答案C。
此為非限定性從句，不能用 that修飾，而用which.，it 和he 都使後句成為句子，兩個獨立的句子不能單以逗號連接。況且選he句意不通。
2）The weather turned out to be very good, ___ was more than we could expect.
A. whatB. whichC. thatD. it
答案B。
which可代替句子，用於非限定性定語從句，而what不可。That 不能用於非限定性定語從句，it不為連詞，使由逗號連接的兩個句子並在一起在英語語法上行不通。
3）It rained hard yesterday, ____ prevented me from going to the park..
A. thatB. whichC. asD. it
答案B。
as 和which在引導非限制性定語從句時，這兩個關系代詞都指主句所表達的整個意思，且在定語從句中都可以作主語和賓語。但不同之處主要有兩點：
(1） as 引導的定語從句可置於句首，而which不可。
(2） as 代表前面的整個主句並在從句中作主語時，從句中的謂語必須是系動詞；若為行為動詞，則從句中的關系代詞只能用which.。
在本題中，prevent由於是行為動詞，所以正確選項應為B。
As 的用法例
1. the same… as；such…as 中的as 是一種固定結構, 和……一樣……。
I have got into the same trouble as he (has).
例2. as可引導非限制性從句，常帶有'正如'。
As we know, smoking is harmful to one's health.
As is known, smoking is harmful to one's health.
As是關系代詞。例1中的as作know的賓語；
例2中，它充當從句的主語，謂語動詞know要用被動式。
一、「as / which」 特殊定語從句的先行成分
1. 形容詞或形容詞短語作先行成分, 具有形容詞意義的介詞短語也可以充當先行成分，如：
My grandmother』s house was always of great importance to me, as my own is.
在一定的語言環境里，有些名詞可以具有形容詞的性質。這些名詞主要是那些表示人的身份、職業、狀態的名詞。值得一提的是，在這些具有形容詞性質的名詞之後，引導定語從句的關系代詞不能用who / whom.
2. 動詞短語先行成分。
這種動詞短語既可是限定形式也可是非限定形式。如果是動態動詞短語，它們在從句中就一般有限定或非限定形式的替代動詞do和as / which一起代替。do可以出現，也可以不出現，但不能用其它動詞代替。
3. 句子作先行成分。
這句子可以是整個主句也可以只是主句中的一個從句。有時是連續幾個句子，有時甚至可以是一個完整的故事。
二、「as/which」特殊定語從句在句中的位置
由於先行成分的構成成分不同，「as/which」特殊定語從句在句中的位置有以下幾種情況：
1. 形容詞做先行成分時：形容詞或形容詞短語（含具有形容詞性質的名詞）作先行成分，「as / which」特殊定語從句置於先行成分之後。
2. 動詞短語作先行成分時：動詞短語作先行成分時，「as / which」特殊定語從句置於先行成分之後。但是，當從句中含有表示主觀意志的插入成分時，「as」特殊定語從句可以移至句子之首。
3. 句子作先行成分時：「as」特殊定語從句的位置較靈活，可以置於先行成分之前、之中或之後。但如果先行成分是直接引語，「as」特殊定語從句多在先行成分之前。如果先行成分是否定句，「as」特殊定語從句與否定詞的相對位置不同可以使它產生不同的意義。由於「as」特殊定語從句具有這一特點，所以有時它的位置不能隨便移動。在非正式的文體里，「which」特殊定語從句可以出現在先行成分之中。
三、「as/which」特殊定語從句的語義功能
一般說來，as與which的語義功能相同，可以相互替換。但先行成分為句子時，它們的語義功能則有差異。
1. 表示結果
表示結果的特殊定語從句與其先行成分之間存在著一定的因果關系，從句中往往使用有結果意義的詞，如動詞result, make, enable, cause和形容詞interesting, surprising, delightful, disgraceful等。
2. 表示評注
表示評注的特殊定語從句對其先行成分所述事實的正確性有肯定的傾向，它通常與那些表示客觀事實，普遍真理或某種習性的先行成分連用；從句中則常用一些表示「合乎自然規律」、「眾所周知」或「經常發生」等意義的詞語，如natural, known to all, usual等。
3. 有無狀語意義
「as」特殊定語從句具有狀語意義（主要是方式狀語意義），而「which」特殊定語從句則無狀語意義。「as」特殊定語從句的狀語意義要求它在語義上與其先行成分的語義保持一致，「which」特殊定語從句則不受這種限制。
四、關系代詞as與which的句法功能
1. as / which 在特殊定語從句中作主語。
as作主語時，謂語動詞常為連系動詞（主要是be, seem），主語補語為usual、 a rule、 a matter of fact等時，系動詞be習慣經常省略。行為動詞作「as」特殊定語從句的謂語時一般用於被動語態（其中助動詞be常略），不及物的行為動詞在「as」特殊定語從句中作謂語的極少，常見的有happen一詞。如：
Freddie, as might be expected, was attending the conference.
Which作主語時，謂語動詞不限，主動被動皆可，只是謂語動詞為被動語態時助動詞be省略。
2. as和which都可以在特殊定語從句中賓語。
3. as和 which在特殊定語從句中作補語。如：
We thought him a gentleman, as/which he could never be.
「as」特殊定語從句中可以主謂倒裝，「which」從句中則不能主謂倒裝。
如果先行成分不是主語補語或賓語補語，關系代詞用which而不用as。如：
He talked like a native, which/as he hardly was.
4. which在特殊從定語句中作定語。
which可以在特殊定語從句中作定語，修飾fact, matter, thing 等名詞。這些名詞代表先行成分表達的意義，有時將其略去句義仍然完整。as不能作定語。如：
I was told to go not by train but bus, which advice I followed.
Ⅳ 求 九年級英語定語從句過關題 標准答案
1245： AADC
6-10： Dcabb
13:D 14:A 16:B
17:D
18:D
19:C
20:B
2):B
3):B
4）：C
Ⅳ 九年級定語從句
選B，
簡單分析分析：後半句缺少賓語。理解這一點非常重要：片語live in是及物動詞片語，後面回必須加賓語。而只答有which可以承擔這一功能。
擴展一下：shengyang is where we live.live此處為不及物動詞，不用跟賓語，而缺少地點狀語，所以用where。
詳細解析：首先要弄明白從句缺少的成分 否則一切無從談起 如果是第一個問題 答案是 絕對不行 原因很簡單 我一說你就會明白 關系代詞有兩個語法功能：1、代詞 這時它在從句中作賓語或者主語 主謂賓是一個句子不可缺少的基本成分（當然極少數時侯可以缺少賓語，因為謂語是不及物動詞，後面不能跟賓語 例如 我走了 ）2、連詞 就是說連接主句和從句 如果沒有這個功能 主句和從句就沒有任何關系了 在語法上完全可以獨立為兩個句子
而關系副詞也有兩個語法意義：1、連詞 這時完全同上第2條 2、副詞 這時只是起到引導從句的作用 在從句中作狀語
Ⅵ 九上一個關於定語從句的英語問題
省略了who are變成了過去分詞短語作定語。
Ⅶ 九年級英語定語從句
定語從句就是一個句子起到了一個形容詞的作用，修飾名詞或代詞。專通常置於所修飾的名詞或屬代詞的後面。
如： On 20th July 1969, Armstrong became the first human that walked on the moon.
定語從句：that walked on the moon修飾名詞human，human是主句的賓語。
Ⅷ 新目標九年級英語書中的定語從句有哪些
定語從句的類型還是很多的。主要是幾種：對名詞（人或物）定語從句；對地點的定語從句，和對時間的定語從句。
對名詞的名定語從句，如果先行詞是人，用who（或者that，但是現在傾向於少用that），物體用that，非限定的的時候人用who或者whom，物體用which：
例如：The building that is located at the center of the town is the bell tower. (限定)
The book, which was written by Mo Yan, is now very popular.（非限定）
The man speaking on the stage is my father. (限定，修飾人)
The president, who had just received the Nobel Price, appeared at the meeting.
對地點的定語從句：This is the village where my parents spend all their lives. 一般修飾地點的定語從句用where就可以。
對時間的定語從句用when: Those years were the time when we were passionate youngsters.
定語從句還有其他的形式，但是到高中應該掌握這些就可以了。有什麼疑問可以追問。
Ⅸ 英語九年級定語從句 選擇題 帶分析
C
whom
to
go
there
with
with
後面加賓格
所以是whom
加
with是和誰一起的意思