① 英語語法定語從句
單純的說定語從句的話
只要明確了什麼是定語
而什麼是句子便可以了
二者綜合成為顧名思義的定語從句
值得一提的是
定語從句基本上充當的是名詞或形容詞性
自然在意義上也屬於名詞或形容詞
祝學業有成！
② 求賓語從句，定語從句，狀語從句簡單易懂的講解，有視頻的更好
去網上搜索一本賴世雄的語法書吧，相信你會很有收獲的。
③ 英語語法定語從句
1.定語從句的定義：用作定語的從句叫定語從句。
2.先行詞：被定語從句所修飾的名詞或代詞。
3.定語從句的位置：緊跟先行詞(名詞或代詞)之後。
4.引導詞：引導定語從句的詞(包括關系代詞和關系副詞)。
﹙1﹚關系代詞：that/who/whom/which/as
﹙2﹚關系副詞：when/where/why
5.引導詞的位置：位於定語從句之前(先行詞之後)。【as除外】
6.引導詞的功能(作用)：
﹙1﹚連接先行詞和定語從句。
﹙2﹚在定語從句中充當一定的成分(關系代詞充當主語或賓語，關系副詞充當狀語)。
7.定語從句的類型：
﹙1﹚限定性定語從句(主句和定語從句之間無逗號)。
① 直接由引導詞引導定語從句
The man who you』re talking to is my friend.
② 由介詞+關系代詞(whom/which)引導
The man to whom you』re talking is my friend.
I need a pen with which I can write a letter.
=I need a piece of paper on which I can write a letter.
介詞的選用可根據從句中的相關片語確定，該介詞通常可以放在關系代詞之前，也可放在從句之尾。例如：
The man (who/whom/that) I talked about at the meeting is from Beijing University.
=The man about whom I talked at the meeting is from Beijing University.
The palace (which/that) I often pay a visit to was built in the 17th century.
=The palace to which I often pay a visit was built in the 17th century.
﹙2﹚非限定性定語從句(主句和定語從句之間用逗號隔開)。
① 直接由引導詞引導定語從句。
② 由介詞+關系代詞(whom/which)引導。
I live in a house far away from the city， in front of which is a big tree.
There is an apple tree standing at the gate， on which are many apples.
This is the man to whom I gave the book.
③ 由「代詞/名詞+of+whom/which」或「of which/ whom +名詞/代詞」(先行詞指
人用whom，指物用which)引導。One， some， any， none， all， both， several， many， most， neither， either等詞、數詞、分數或百分比與of whom或of which連用。
He has five children， two of whom are abroad.
(比較：He has five children， and two of them are abroad.)
We have three books， none of which is/are interesting.
(比較：We have three books， but none of them is/are interesting.)
除why和that不能引導非限定性定語從句外，其餘引導詞都可以，用法同限定性定語從句一樣。但要注意以下區別。
1.在形式上非限定性定語從句與主句有逗號隔開。
2.非限定性定語從句的作用：它只是補充說明先行詞的情況，翻譯時可譯成兩個句子。
The engineer， whose leg was badly hurt， was quickly sent to hospital.
(那位工程師被很快送往醫院，其腿部受了重傷)
The engineer whose leg was badly hurt was quickly sent to hospital.
(那位腿部受了重傷的工程師被很快送往醫院)
3.在非限定性定語從句中，任何引導詞都不能省略(包括引導詞在此定語從句中充當賓語在內)。指人做主語時只能用who， 做賓語時用whom；
指物做主語，賓語都用which； 關系副詞用when或where，也不能省略。
④ 誰有新東方老師或者其他老師講解的定語從句視頻，麻煩傳給我，謝謝~多多益善。其他語法的也可以。
http://v.youku.com/v_show/id_XNDY5ODc3MTky.html?x
採納我吧！找起來內不容容易！
⑤ 英語語法定語從句
因為我們不說on the year
⑥ 求：高中英語語法（限制性從句，定語從句等）講解視頻的資源
你好。定語從句：
http://.ku6.com/watch/08212796362722571065.html?page=videoMultiNeed
限制性從句與非限制性從句：
http://.ku6.com/watch/04632040470664403659.html?page=videoMultiNeed
限制性定語從句復習：
http://.ku6.com/watch/08178944955748598141.html?page=videoMultiNeed
⑦ 英語語法講解復合句
復合句指的是含有兩個或更多的主謂結構的句子，其中有一個（或更多）主謂結構充當句子的某一（些）成分，如主語、賓語、表語、定語、狀語、同位語等。主語從句、賓語從句、表語從句、同位語從句、定語從句和狀語從句都屬於復合句。
一、狀語從句：
狀語從句 Adverbial Clause，從句用作狀語稱為狀語從句。根據用途，狀語從句可分為時間、地點、原因、條件、方式、讓步、結果、目的等狀語從句。
I. 時間狀語從句
時間狀語從句表示時間，常用的關聯詞有when, until, as, after, before, once, since, as long as, whenever等等。
例: 1) When you cross a main road, you must be careful.
2) He went out to play football after he had finished his homework.
3) Wait until you are called.
4) I can't recognize you. You are so changed since last we met.
5) He didn't go to school until he was eleven.
You can use my house as long as you are careful.
He is so terrible once he is drunk.
I listen to the radio while I walk every evening.
II. 地點狀語從句
地點狀語從句表示地點，常用的關聯詞有where, wherever, anywhere等。
例如：1) Put it where you found it.
2) Sit down wherever you like.
3) Anywhere she goes, he goes too.
III. 原因狀語從句
原因狀語從句表示原因或理由，常用的關聯詞有because, as, since, in case等。
1) I eat ice-cream so much because I like sweet food.
2) As I didn't know the way, I asked a policeman.
3) Since you won't help me, I'll ask someone else.
I'll take my raincoat in case it rains. (in case it rains = because it may rain)我將帶上雨衣，以防下雨。
IV. 條件狀語從句
條件狀語從句表示真實的或現實的條件，引導從句所用的關聯詞有if, unless, suppose, in case(that), in the event (that), as (so) long as等等。
1) If it snows tomorrow, we will build a snowman.
You'll be late, unless you hurry.
3) Suppose we are late, what will he say? (suppose從句必須放在主句之前) 我們如果遲到了，他會說什麼？
4) In the event that our team wins, there will be a party.
5) In case it rains, do not expect me. 如果下雨，就不要等我了。
6) He will do anything as(so) long as it is interesting. 只要好玩，他什麼都願意做。
V. 方式狀語從句
方式狀語從句表示動作的方式，回答How的問題，常用關聯詞as, as if, as though, the way(that), in the way(that)等引導，一般置於主語之後。
Do as I say. I did just as you told me. 照我說的去做。我就是照你說的去做的。
He acts as if/as though he is the owner. 他行為舉止好象是這兒的主人似的。
They did it in a way that I had never seen before. 他們以我從沒見過的方式行事。
I was never allowed to sing the way I wanted to. 我從未被允許用自己想用的方式唱歌。
VI. 讓步狀語從句
讓步狀語從句表示「雖然、盡管、即使」等概念，使句子具有對比的因素。常用的關聯詞有although, though, even if, even though, not that(=although…not)等，置於主語之前或後。
1) Although you feel very ill right now, this is still a common disease.
2) Though he has lived for years in London, he writes in French.
3) We intend to go U.S., even if air fares are expensive.
4) Even though fruits are good, you can't live with fruits only.
5) I'm OK now, not that I slept (although I did not sleep) very well last night.
VII. 結果狀語從句
結果狀語從句表示結果， 常由連詞so…that, such(a/an)…that, so that, such that等引導，置於主語之後。
She was so frightened about the dog that she cried.
The news worried him so much that he didn't sleep at all for the whole night.
He is such a wonderful joker that you can't help laughing.
They are such wonderful players that no one can beat them.
We arrived early, so that we got good seats.
The weather was such that I couldn't go out.
VIII. 目的狀語從句
目的狀語從句表示目的，回答what for或 for what purpose的問題，常用關聯詞so that, in order that等引導，一般置於主語之後。目的狀語從句中的謂語動詞常由「情態動詞+動詞原形」構成。
Ships carry lifeboats so that people can escape if the ship sinks.
They wrote the notice in several languages so that foreigners could understand it.
We carved their names on the stone in order that people should always remember them.
They risk their lives so that/in order that they may support their kids.
二、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。
關系代詞有：who, whom, whose, that, which等。
關系副詞有：when, where, why等
1. 關系代詞引導的定語從句
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：
Is he the man who/that wants to see you?
他就是你想見的人嗎？（who/that在從句中作主語）
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），例如：
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。
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： 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在句中作賓語）
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)
2. 關系副詞引導的定語從句
關系副詞可代替的先行詞是時間、地點或理由的名詞，在從句中作狀語。
1）when, where, why 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？
2）that代替關系副詞that可以用於表示時間、地點、方式、理由的名詞後取代when, where, why和"介詞+ which"引導的定語從句，在口語中that常被省略.例如：
His father died the year (that / when / in which) he was born.
他父親在他出生那年逝世了。
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過的地方
3. 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。及物動詞後面無賓語，就必須要求用關系代詞；而不及物動詞則要求用關系副詞。例如：
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
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。
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。
4. 限制性和非限制性定語從句
1) 定語從句有限制性和非限制性兩種。限制性定語從句是先行詞不可缺少的部分，去掉它主句意思往往不明確；非限制性定語從句是先行詞的附加說明，去掉了也不會影響主句的意思，它與主句之間通常用逗號分開，例如：
This is the house which we bought last month.
這是我們上個月買的那幢房子。（限制性）
The house, which we bought last month, is very nice.
這幢房子很漂亮，是我們上個月買的。（非限制性）
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。
說明：關系代詞that和關系副詞why不能引導非限制性定語從句。
5. 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 和where 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?
6. as, which 非限定性定語從句
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 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。
7. 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)
8. what/whatever;that/what; who/whoever
1）what = the thing which；whatever = anything
2) who= the person that whoever= anyone who
3) that 和 what
當that引導定語從句時 ，通常用作關系代詞，而引導名詞性從句時，是個不充當任何成分的連接詞。賓語從句和表語從句中的that常可省略。What只能引導名詞性從句， 用作連接代詞，作從句的具體成分，且不能省略。
9. 關系代詞that 的用法
1）不用that的情況
a) 在引導非限定性定語從句時。
b) 介詞後不能用。
2) 只能用that作為定語從句的關系代詞的情況
a) 在there be 句型中，只用that，不用which。
b) 在不定代詞，如：anything, nothing, the one, all, much, few, any, little等作先行詞時，只用that，不用which。
c) 先行詞有the only, the very修飾時，只用that。
d) 先行詞為序數詞、數詞、形容詞最高級時，只用that。
e) 先行詞既有人，又有物時,只用that。
三、名詞性從句：
在句子中充當主語、賓語、表語與同位語的句子分別叫做主語從句、賓語從句、表語從句和同位語從句， 這些統稱為名詞性從句。
（一）主語從句
在復合句中用作主語的從句叫主語從句。
A 為了強調主語從句的內容，可將從句置於句首
B 大部分主語從句都可以用it作形式主語
為了保持句子平衡，主語從句常用it作形式主語，將主語從句後置。用it作形式主語的主語從句結構有如下幾種：
1、It is + 名詞 + that從句
2、It is + 形容詞 + that從句
3、It + 動詞 + that從句
4、It is + 過去分詞 + that從句
用形式主語it引導的主語從句相當多，有些已形成固定的語法和譯法。常見的有：
It is said that... 據說……
It is reported that... 據報導……
It is well known that... 眾所周知……
It is announced that... 據宣布……
It is believed that... 人們相信……
It is thought that... 人們認為……
It is understood that... 自不待言……
It must be pointed out that... 必須指出……
It must be admitted that... 必須承認……
（二）賓語從句
賓語從句 The Object Clause，在復合句中作主句的賓語，它屬於名詞性從句。它可以作主句謂語動詞的賓語，也可以作介詞的賓語。賓語從句以從句的句式來決定連接詞。
賓語從句有四步曲
連接詞： （也叫引導詞）
語序： 從句的詞序用陳述語序（主+ 謂）
時態： 主句的時態如果是過去時，從句的時態應以過去時為基礎作相應的變化。
人稱： 要根據句中的意義作相應的變化
連接詞（引導詞）
從屬連詞 that ，if ，whether
連接代詞 who， whom， whose， which， what
連接副詞 when ，where ，how ，why
1.如果陳述句作從句，連接詞用that,在口語和非正式語體中常可省略that 。
2.特殊疑問句作從句，就用原來的特殊疑問詞
3.一般疑問句作從句，連詞用if或whether 在選擇疑問句只用whether，記住這一結構：whether … or not 。
（三）表語從句
表語從句放在連系動詞之後，充當復合句中的表語。
A 可接表語從句的連系動詞
可接表語從句的連系動詞有be, look, seem, sound, appear等。
B as, as if / though引導的表語從句
C because, why引導的表語從句
what引導的主語從句表示結果或名詞reason作主語時，後面的表語從句表示原因時要用that引導，不宜用because。
D 使用虛擬語氣的表語從句
在表示建議、勸告、命令含義的名詞後的表語從句，謂語動詞需用"should+動詞原形"表示，should可省略。常見的詞有：advice, suggestion, order, proposal, plan, idea等。
（四）同位語從句
同位語從句用於對前面的名詞作進一步解釋，說明名詞的具體內容。同位語從句一般由that引導，但也可以由whether以及連接代詞和連接副詞引導。
A 同位語從句一般跟在名詞的後面
同位語從句一般跟在名詞fact, hope, idea, news, doubt, suggestion, information, opinion, decision, discovery, truth, promise, statement, problem, rule等後面。
B 使用虛擬語氣的同位語從句
在一些表示「建議、命令、要求」的名詞後的同位語從句中，謂語動詞用"should + 動詞原形"，should可省略。
⑧ 英語定語從句，語法
定語從句中，連接先行詞和定語的叫關系代詞或關系副詞。有一些情況下，關系代詞可以省略：
1、當關系代詞所代替的先行詞在定語從句中做賓語，關系詞可以省略。Whoistheman(that/who/whom)youweretalkingto? 剛才和你講話的人是誰？
2、當關系代詞that在定語從句中用作表語時，可以省略。
Chinaisnotthecountry(that)itwas. 中國已不是過去的中國了。
3、關系副詞when用於day,year,time少數詞後時可以省略（也可換成that）Thatwastheyear(that)Ifirstwentabroad. 就是那一年我第一次出國。
4、關系副詞where用於place, somewhere, anywhere, everywhere, nowhere少數詞後時可以省略(也可換成that)。
Thisistheplace(where)theymetyesterday. 這就是他們昨天碰頭的地方。
5、當關系代詞that在定語從句中用作賓語補足時，可以省略。
I』mnotthemadman(that)youthoughtme. 我並不是你所認為的那個瘋子。
6、關系副詞why通常只用於the reason後引導定語從句，且通常可換成that或for which，這些連接詞都可以省略。
That』s the reason (why, for which, that) he came. 這就是他來的原因。
Give me one reason (why) we should help you. 給我舉出一個我們應當幫助你的理由。
如有疑問，請追問，滿意，請採納，謝謝。
⑨ 請問能不能推薦一下專門講英語的定語從句，狀語從句等語法的書初中的。
推薦華東師范大學出版的《英語思維：解密英語語法的原理》這本書，該書是國內內第一本系統講解英容語語法原理和思維內涵的書，是第一本從語言原理層面完整系統的呈現英語語法全貌和完整框架體系的書。該書從語言思維的層面對定語從句、名詞從句、狀語從句進行了講解，簡單明了，直觸本質。
也可以學習同名視頻課程，學習的更加快速輕松，會讓小孩對英語的認識脫胎換骨，對初高中學習如虎添翼。
⑩ 知識講解：2016考研英語語法指導——考研英語定語從句詳解
定語從句
一、【知識網路】
用來說明主句中某一名詞或代詞（有時也可說明整個主句或主句中一部分）而起定語作用的句子叫作定語從句。
一、關系代詞引導的定語從句
1. 關系代詞用來指代先行詞是人或物的名詞或代詞
句子成分 用於限制從句或非限制性從句 只用於限制性從句
代替人 代替物代替人或物
主語 Who which that
主語 Whomwhich that
賓語 Whose（=of whom） whose（=of which）
This is the detective who came from London. The book which I am reading is written by Tomas Hardy.
The desk whose leg is broken is very old. This is the room that Shakespeare was born in.
2.關系代詞的用法
（1）如果先行詞是all，much，anything，something，nothing，everything，little，none等不定代詞，關系代詞一般只用that，不用which.例如：
All the people that are present burst into tears.
（2）如果先等詞被形容詞最高級以及first，last，any，only，few，mush，no，some，very等詞修飾，關系代詞常用that，不用which，who，或whom.例如：
（3）非限制性定語從句中，不能用關系代詞that，作賓語用的關系代詞也不能省略。例如：
There are about seven million people taking part in the election，most of whom、are well ecated.
（4）which還有一種特殊用法，它可以引導從句修飾前面的整個主句，代替主句所表示的整體概念或部分概念。在這種從句中，which可以作主語，也可以作賓語或表語，多數情況下意思是與and this 相似，並可以指人。例如：
He succeeded in the competition，which made his parents very happy.
（5）that可指人或物，在從句中作表語，（指人作主語時多用who）僅用於限制性定語從句中。
（6）which可作表語，既可指人，以可指物。指人時，一般指從事某種職業或是有種特徵。品性或才能的人。Which引導的定語從句可以限制性的，也可以是非限制性的。
（7）如果作先作詞的集體名詞著眼於集體的整體，關系代詞用which；若是指集體中的各個成員，則用who.
（8）先行詞有兩個，一個指人，一個指物，關系代詞應該用that.例如：
The boy and the dog that are in the picture are very lovely.
（9）如果先行詞是anyone，anybody，everyone，everybody，someone，somebody，關系代詞應該用 who 或whom，不用which.例如：
Is there anyone here who will go with you？
3.「介詞＋關系代詞」是一個普遍使用的結構
（1）「介詞＋關系代詞」可以引導限制性定語從句，也可以引導非限制性定語從句。「介詞＋關系代詞」結構中的介詞可以是
in，on，about，from，for，with，to at，of，without 等，關系代詞只可用whom或
which，不可用that .
（2）from where為「介詞＋關系副詞」結構，但也可以引導定語從句。例如：
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等固定短語動詞，在定語從句中一般不宜將介詞與動詞分開。例如：
This is the boy whom she has taken care of.
二、關系副詞引導的定語從句
1.關系副詞也可以引導定語從句
關系副詞在從句中分別表示時間。地點或原因。關系副詞when在從句中充當時間狀語，where 充當地點狀語，why充當原因狀語。
2. that可引導定語從句表示時間。地點或原因
That有時可以代替關系副詞 when，where 或者why引導定語從句表示時間。地點或原因，在that引導的這種定語從句中，that也可以省去。
三、限制性定語從句與非限制性定語從句
1.二者差異比較
限制定語從句緊跟先行詞，同先行詞這間一般不加逗號，僅修飾先行詞，可以由關系代詞。關系副詞或that來引導。非限制性定語從句僅作補充或說明，用逗號與主句隔開，既可修飾先行詞，又可修飾整個主句，不可用that引導。
2.關系代詞和關系副詞的選擇依據
（1） 弄清代替先行詞的關系詞在從句中作什麼成分，作狀語的應選用關系副詞，作主語。賓語或表語的可選用關系代詞。
3.先行詞與定語從句隔離
定語從句一般緊跟在先行詞之後，但定語從句與先行詞之間有時也會插入別的成分，構成先行詞與定語從句的隔離。例如：
1）This is the article written by him that Is poke to you about……
2）He was the only person in this country who was invited
四、as在定語從句中的用法
1. 引導限制性定語從句和非限制性定語從句
（1）as多與such 或the same連用，可以代替先行詞是人或物的名詞。
（2）as 也可單獨使用，引導非限制性定語從句，作用相當於which.例如：
The elephant's nose is like a snake，as anybody can see.
（3）the same--- that與 the same ---as在意思上是不同的。
2.as引導的非限制性定語從句的位置
as引導的非限制性定語從句位置較靈活，可以位於主句前面。中間或後面，一般用逗號與主句隔開，但which所引導的非限制性定語從句只能放在主句之後。例如：
（1）As is expected，the England team won the football match.
（2）The earth runs around the sun，as is known by everyone.
3.as, which的比較
1).在非限制性定語從句中，均可替代整個主句或句中某個部分，在從句中作主語，賓語，表語．如從句在主句之後，兩者皆可用
They failed in the exam, as/which is natural.
She seems a scientist, as/which in fact she is.
Grammar is not a set of dead rules, which/as I have said before.
2).如從句在主句之前，用as
As we all know, his parents were killed in this war.
As is known to all, the earth travels around the sun.
3).如關系代詞代表主句全句意思，有「正如．．．」「就象．．．」之意時，用as
We won the match, as we had expected. He agreed to the plan, as was to be expected.
4). 當先行項被the same, such, so修飾時，用as
This is the same book as you bought yesterday.同類書 (比較：This is the
same book that you bought yesterday.同一本書)
Don』t believe in such men as praise you to your face.
I never give my students so difficult a question as no one can work out.
5). 當從句內容對主句內容起消極作用，則用which
The young man cheated his friend out of much money, which was disgraced.
6). as 也可以用來引導非限制性定語從句， 用來指待一件事，這時它的位置可以放在句首、句中和句尾。
He is an American, as/which we know from his accent. As we know from his accent, he is an American.
He, as we know from his accent, is an American. As has been said above, grammar is not a set of dead rules.
Grammar, as has been said above, is not a set of rules.
Grammar is not a set of dead rules, as/which has been said above.
正如: As everyone knows, as you may still remember, as you said, as I
can see, as has been mentioned above, as you may have heard, and etc.
【主要考點】
考點一:that 與which 的區別
只用that的情況:
1. 先行詞為all, little, much, everything, nothing, something, anything等不定代詞
2.先行詞被all, little, much, every, no, 等修飾時。
3.先行詞被序數詞或最高級修飾先行詞前有序數詞(the first),形容詞最高級(the best), the
Last，the very, the only 等時。
4. 先行詞為人和物的組合
5.若主句中有疑問代詞 who 或者 which，為了避免重復, 關系代詞不要再用 who, which，而用 that。
只用which的情況:
1,逗號後面 2,介詞後面
考點二:介詞+關系代詞
提醒: 介詞﹢關系代詞引導的定語從句, 關鍵是判斷介詞的選擇.
方法一:根據從句中動詞與先行詞習慣搭配 方法二:根據從句中動詞與先行詞的邏輯關系
注意：關系代詞在定語從句中作介詞賓語時，從句常常由「介詞+關系代詞」引出。此時關
系代詞只能用which 或 whom; 不可用that 或who 代替，但遇固定片語時，介詞一般緊跟片語主體，不作前置 ，Is this the book (which/that) you are looking for ?
考點三 Whose 用法及轉換形式
1. whose引導定語從句，其後應緊跟名詞，構成名詞短語。
That』s the child whose father is a teacher
2.whose引導定語從句，其先行詞不僅可以指人，還可以指物。
Do you know the woman whose husband is a doctor? This is a book whose cover is green.
3. whose的先行詞指物時, 可用of which代替, 但詞序不同，
即whose+名詞=the +n + of which
=of which + the + n.
He lives in the room whose window faces south.
= He lives in the room, the window of which faces south.
= He lives in the room, of which the window faces south
考點四：as與which引導的定語從句
兩者均可引導非限制性定語從句，有時可以互換，但下列情況多用as。
1. 當與such或as 連用時，一般用as。
2. as 引導的從句可以放在句首, as 本身有「正如…..正象…」之意，與之連用的詞有 know, see, expect, announce, point out 等。e.g. As we all know, the earth is round.
考點五: that 與who的區別
在anyone, those, he/she/I / they作先行詞時, 用」who」 代替 「that」.
Anyone _____breaks the law is punished. Those _____ break the law are punished.
He _____ breaks the law is punished.
考點六:如何判斷用關系副詞還是關系代詞?
I will never forget the day when I first went to school. I will never forget the day that we spent in Beijing.
The house which we visited is being repaired now. The house where Luxun once lived is being repaired now.
考點七:定語從句中主謂一致問題
定語從句中的動詞在人稱和數方面應該與它的先行詞保持一致。
1.I am not one who __is____afraid of difficulty． 2.Don『t choose me, who ____am___not fit for this job．
考點八：以抽象地點(mark, situation, case, point, scene, business，occasion等)作先行詞的定語從句中關系詞一般用where，occasion作先行詞時也可以用when.