英语怎么区分各种从句
先找出主语，再找出句子主干，而从句只是来修饰限定主句成分的。
比如定语从句就是修饰主句中的名词的，名词性从句（包括主语从句,宾语从句,表语从句,同位语从句）、形容词性从句（即定语从句）、副词性从句（即状语从句，包括时间、条件、结果）主语从句用作主语，宾语从句用作宾语，表语从句用作表语，同位语从句用于解释说明前面的名词，定语从句相当于一个形容词，用于修饰前面的名词，状语从句相当于一个副词。
英语中六大从句用法总结
1.主语从句
1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有：
*It is a fact\a pity\a question\good news that...
*It seems\appears\happened\has turned out that...
*It is clear\important\likely\possible that...
*It is saideported\estimated\has been proved that...
It is said that comic books create a connection between people of the same generation.
It seems that the performance is very useful.
2)what引导的主语从句表示“...的东西时”，一般不用it作形式主语。
What we lack is experience.
3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。
How the plan is to be carried out should be discussed again.
I did know why I felt like crying.
2.宾语从句
1）宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。in that(因为),except that(除了),but that(只是）已构成固定搭配，其他介词后一般不接that引导的宾语从句。
*I promised that I would change the situation.
*All this is different from what American young people would say about friendship.
*He is certain that watching so much television is not good for children.
*This article is well-written except that it is a bit too long.
2)宾语从句后如有宾补，要用形式宾语it来代替，而把宾语从句移至宾补之后。
He has made it clear that he would not change his mind.
3)在think,believe,suppose,expect等动词后的宾语从句中，如果谓语是否定的，一般将否定词移至主句谓语上，宾语从句则变成肯定形式。
He didn't think that the money was well spent.
3.表语从句
表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语从句除可用that,what,when,why,whether,how等引导外，还可由because,as if(though)等引导。that常可省略。如主句主语为reason,只能用that引导表语从句，不可用because.
Perhaps the most important thing to remember is that there is no one common type of life in America.
The reason why so many people died there is that there were not enough food supplies.
It looks as if successful international cultural communication will make the world smaller.
4.同位语从句
同位语从句用于对前面出现的名词作进一步说明，一般用连词that引导，由于先行名词的意义不同，也可用whether,who,when,where,what,why,how等引导。常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有时由于谓语较短，将同位语从句位于谓语之后。
She finally made the decision that she would join the fashion show.
I had no idea how many books I could borrow at a time.
The news came that their team had won the championship.
5.定语从句
定语从句所修饰的先行词可以是名词或代词，也可以是一个句子。定语从句通常位于先行词之后，由关系代词或关系副词引导。
*限制性定语从句
限制性定语从句修饰先行词，对先行词起修饰作用，紧接先行词之后，无逗号，若省去，原句意思不完整。引导定语从句的关系代词有who,whom,whose,which,that等。who,whom,whose用于指人，whose有时也可指物，相当于of which；which用于指物；that既可指人也可指物，但只用于限制性定语从句中。关系代词除了引导定语从句，替代先行词外，还在从句中担任主语、宾语、定语等。
The computers and cables which make up the Internet are owned by people and organizations.
Those who live alone or who are sick may have trouble in getting close to other people.
The girl whose parents died in an accident is living with her grandmother.
1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时，只能用关系代词that引导从句。
That is all that I've heard from him.
He's the first person that I'm going to interview this afternoon.
2)关系代词的省略
在从句中作宾语的关系代词常可省略。关系代词紧跟介词，作介词宾语时不可用that，只可用which或whom引导从句，并且不可省略，但当介词位于宾语从句句末时，作为介词宾语的关系代词仍可用that，也可省略。
This is one of those things with which we have to put up.
This is one of those things (whichhat) we have to put up with.
3)引导定语从句的关系副词有when,where,why等。关系副词在从句中作状语，意义上相当于一个“介词+which”的结构。
Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings.
No one knows the reason why(=for which) he was so angry that day.
5.定语从句
*非限制性定语从句
非限制性定语从句既可修饰先行词，也可修饰整个主句，起补充说明作用，与主句之间有逗号隔开，若省去，原句意思不受影响。不可用that引导非限制性定语从句。关系词不可省略。
Every object has a gravitational pull,which is rather like magnetism.
*“介词+which\whom\whose”引导的定语从句
“介词+which\whom\whose”可引导限制性定语从句，也可引导非限制性定语从句，该结构中介词的选择取决于从句谓语动词的固定搭配，或先行词的习惯搭配。
This is the computer on which he spent all his savings
It is written by a person with whom we are all familiar.
*as引导的定语从句
as引导的定语从句主要用于“such...as”及“the same...as”的结构中，代替先行词是人或物的名词。as引导非限制性定语从句时，代替整个主句，从句可位于主句之前、之后或中间。
These are not such problems as can be easily solved.(as代替先行词problems)
As is mentioned above,no single company or group can control what happens on the Internet.(as代替主语)
6.状语从句
*时间状语从句
引导时间状语从句的从属连词和词组有：
1）when,whenever,while,as,after,before,since,till,until,once等。
We have learnt quite a lot about it since we came here.
2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等。
As soon as I sent an e-mail message,I received positive responses.
The moment he heard the good news,he jumped with joy.
*地点状语从句
引导地点状语从句的连词是where,wherever.
Wherever she went,she took her little daughter with her.
*原因、结果和目的状语从句
1）引导原因状语从句的从属连词有：because,as,since,now(that),seeing that,considering that,in that等。
Considering that he is a freshman,we must say he is doing well.
2)引导结果状语从句的连词有：so...that,such...that
,so that,that,so等。
Mickey Mouse is so attractive that the children are reluctant to leave.
3)引导目的状语从句的连词有：so that,in order that,for fear that,lest等，从句常使用may,might,can,could,would等情态动词。
We got up early this morning so that we could catch the first bus to the railway station.
*条件和让步状语从句
1）引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。
As long as you have the right equipment,you can use a telephone line to transmit computer data.
2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however....)等。though,even if等引导状语从句可转换成含有as的部分倒装结构，具有强调意义。其结构为“形容词（副词、动词、名词）+as+主语+谓语”。
No matter what you may say,I would not change my mind.
Young as he is,he is quite experienced in this work.(=though he is young)
Child as he is,he can speak English fluently.(=though he is a child)
*方式状语从句
引导方式状语从句的连词有as,just as,as if,as though等。as if,as though引导的状语从句中，谓语动词常用虚拟语气，表示与事实相反。
The young man made the experiment just as the teacher had taught him.
Everything went on as usual as if nothing had happened.
1、从句类型：定语从句
辨别方式：a virtue(名词)+that(从属连词)+many Americans value highly and expect from both neighbors and strangers(句子)
译文：然而，表示友好是一种美德，美国人高度重视这种美德，并期望邻居和陌生人都能有这种美德。
2、从句类型：同位语从句
辨别方式：theory(名词)+that(从属连词)+animals have rights ruling out their use in research(句子)
译文：一个这样的事业现在正在寻求终止生物医学的研究，因为有这样一种理论说，动物享有权利禁止它们被用于实验。
定语从句和同位语从句的区分：
既然定语从句和同位语从句在辨认形式上都是"名词+从属连词+句子"，那么应该如何具体区分定语从句和同位语从句呢?这个时候重点在于从句中是否缺少成分：如果从句中缺少成分，那么应该就是定语从句;如果从句中不缺少成分，则是同位语从句。
3、从句类型：宾语从句
辨别方式：think(动词)+从属连词(that)+the kinds of things that women are exposed to tend to be in more of a chronic or repeated nature(句子)
译文：我认为那种妇女面对的事情往往更具有长期性和反复性。
4、从句类型：定语从句
辨别方式：is(动词)+how(从属连词)+(how)friendly,courteous,and helpful most Americans were to them(句子)
译文：由去美国的游客不断地带来的一个报告是大多数美国人对他们是多么的友好、礼貌和热心。
宾语从句和表语从句的区分：
既然宾语从句和表语从句在形式上都是"动词+从属连词+句子"，那么如何进行区分呢?区分宾语从句和表语从句的标志在于从句前的动词是否属于系动词：如果是系动词，那么该从句是表语从句;如果不是系动词，那么该从句则是宾语从句。
5、从句类型：状语从句
辨认方式：(×)+While(从属连词)+traditional"paid"media--such as television commercials and print advertisements--still play a major role(句子)
译文：尽管传统的付费媒体，比如说，电视商业广告和纸质广告，依然占据着重要的作用，但现在的公司开发出许多其他的媒体形式。
根据从句语法功能的不同可分为：主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类。
前四类由于主语从句、表语从句、宾语从句及同位语从句在句子的功用相当于名词，所以通称名词性从句；
定语从句功能相当于形容词，称为形容词性从句；
而状语从句功能相当于副词，称为副词性从句。状语从句还可以分为条件状语从句、原因状语从句、地点状语从句、目的状语从句、让步状语从句、比较状语从句、方式状语从句、结果状语从句和时间状语从句。
1、主语从句
用作主语的从句叫主语从句。引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。
2、表语从句
用作表语的从句叫做表语从句。引导表语从句的关联词与引导主语从句的关联词很多都一样。
3、宾语从句
在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类：动词的宾语从句、介词的宾语从句和形容词的宾语从句。
4、同位语从句
是名词性从句(主语从句、表语从句、宾语从句、同位语从句)中的主要从句之一，从句作同位语表示与之同位的名词(短语)的实际内容，它的作用相当于名词，对前面的名词(短语)加以补充说明或进一步解释，相当于一个表语从句，它们之间的关系就是同位关系，即主表关系。
5、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。
扩展资料
从句时态：
1．主句是一般现在时，从句时态不变。
He says (that) he will leave a message on my desk.
他说他会在我的桌子上留言。
2．主句是一般过去时，从句为各种相应过去时态。
He answered that he was listening to me.
他回答说他正在听我说话。
3．主句是一般将来时，一般从句为一般现在时（“主将从现”）。
4. 当从句所叙述的事实为一个定理或客观存在时，无论主句是什么时态，从句均用一般现在时。但与人有关的均不是定理。
He told me that he was a boy.
他告诉我他是个男孩。
（虽然性别是客观存在的，但“男”“女”也是人为定义的，故非第4种情况）
Father told me that practice makes perfect.
父亲告诉我熟能生巧。
（所叙述的事实为一个定理，用一般现在时）
参考资料：百度百科-从句
英语的从句分为名词性从句、定语从句和状语从句。区分各种从句主要是看引导从句的关联词，如从属连接词、疑问代词、疑问副词、关系代词、关系副词、缩合连接代词、缩合连接副词。最容易混淆的就是定语从句了。
一个简单句跟在一名词或代词后（先行词）进行修饰限定，这个句子就叫做定语从句。在主句中充当定语成分。
被修饰的词叫先行词。定语从句不同于单词作定语的情况，它通常只能放在被修饰的词（即先行词）之后。定语 从句由关系词（关系代词、关系副词）引导，关系代词、关系副词位于定语从句句首。
一、关系代词引导的定语从句
关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、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
这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
Is he the man who/that wants to see you?
他就是想见你的人吗？（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，它还可以同of which互换）, 例如：
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 the) cover is green. 请递给我那本绿皮的书。
3）which, that
它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：
A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作主语）
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、关系副词引导的定语从句
关系副词可代替的先行词是时间、地点或理由的名词，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"结构，因此常常和"介词+ which"结构交替使用，例 如：
There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。
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? 这就是他拒绝我们帮忙的理由吗？
2）that代替关系副词
that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从 句，在得正式文体中that常被省略（正式文体中不可省略），例如：
His father died the year (that / when / in which) he was born. 他父亲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 年前居住过的地方。
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。及物动词后面无宾语，就必须要 求用关系代词。例如：
（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和关系副词，先行词在从句中作主、定、宾语时，应选择关系代词；先行词在从句中作状语时，应选择关系副词。
例如：（对）Is this the museum which you visited a few days ago?
（对）Is this the museum where the exhibition was held?
希望我能帮助你解疑释惑。
英语从句主要有三大分类：1. 名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）2. 形容词性从句（定语从句）3. 副词性从句。
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主语从句：一般情况下，由It is/was+从句，则该从句为主语从句
表语从句：主语+连系动词（is are was，were）+表语从句
宾语从句：动词、形容词+宾语从句，充当宾语
定语从句：不完整的名词+定语从句
同位语从句：完整的句子+同位语从句
答：英语中总共有六大从句,区分方法,用法,及例子如下: 1.主语从句 1)主语从句可直接位于主语的位置,如果从句较长,谓语又较短,可用it作形式主语,而将从句放在句末.常见的句型有: *It is a fact\a pity\a question\good news that... *It seems\appears\happened\has turned out that... *It is clea...
答：三大从句是：形容词性从句（即定语从句）；副词性从句（即状语从句）；和名词性从句（包括：主语从句，宾语从句，表语从句和同位语从句）。修饰名词或代词的从句是定语从句 He who does not reach the Great Wall is not a true man.We are all looking forward to the day when 2008 Olympic Games ...
答：单句——拥有一套“主谓结构”（一个时间）；复句——拥有两套以上“主谓结构”（两个以上时间）；主句——可以独立存在的单句 从句——不可以独立存在的单句（必须寄生在主句身体里）引导词——链接从句到主句身体的手铐（从句身份标志）一、名词性从句——从句占位 主语从句： （主-谓-宾）-谓-宾—...
答：1、一般方法在句子做什么成分：A、从句在句首后有谓语动词,除去倒装句就只有主语从句的可能性,that句中不作成分,从句属名词性从句；B、在系动词（be、become等）后,一般是形容词性的表语从句,that仍然不做成分；C、及物动词vt后一般是宾语从句,不及物动词vi后加介词+宾语从句或者状语从句；D、名词...
答：1、名词性从句：Noun Clauses。2、定语从句：Attributive Clauses。3、复杂句：Complex Sentence。4、宾语从句：Object clause。5、表语从句：Predicative Clause。6、主句：Principal Clause。7、从句：Subordinate Clause。
答：1．宾语从句 句子基本结构：主语+谓语+宾语 主语是名词或名词短语 宾语是名词或名词短语 He has a book.The nice lady likes cats.宾语从句：宾语是个句子 He said that he loved Penny.2.主语从句 主语是个句子 That they won the game excited me a lot. 他们赢了比赛让我很激动 3.表语...
答：高中英语主要要掌握三大从句.分别是：1、定语从句（形容词从句）2、名词词从句（包括主语从句,宾语从句,表语从句,同位语从句）3、状语从句（副词性从句,包括时间,地点,结果,目的,原因等）一、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....
答：1、从句类型：定语从句 辨别方式：a virtue(名词)+that(从属连词)+many Americans value highly and expect from both neighbors and strangers(句子)译文：然而，表示友好是一种美德，美国人高度重视这种美德，并期望邻居和陌生人都能有这种美德。2、从句类型：同位语从句 辨别方式：theory(名词)+that(...
答：三、如果从句由从属连接词引导，放在动词的后面作状语，它就是状语从句，包括时间状语从句、地点状语从句、原因状语从句、结果状语从句、条件状语从句、目的状语从句、程度状语从句、方式状语从句等。英语（English）属于印欧语系中日耳曼语族下的西日耳曼语支，由古代从欧洲大陆移民大不列颠岛的盎格鲁、撒克逊和...
答：根据英语从句在句子中的句法作用,从句可分为三类:名词性从句,形容词性从句和副词性从句.通过对引导从句的各种引导词进行观察,我们不难发现,有的从句可以直接从引导词的形式和意义上来区分.如:Though the old man is over seventy,he still sees well and hears well.我们一读此句,就可以认定,由Though...
