从句是相对于主句而言的,即它是从属于某一个主句,而不能单独作一个句子.在英语中,主要有三大从句,即名词性从句（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、目的、原因、让步、地点、方式等）.
主语从句用作主语,如：：
That the earth is round is true.地球为圆的是真实的.
宾语从句用作宾语.如：
Do you know where he lives?
表语从句用作表语,如：
My opinion is that you should not go alone.我的意见是你不应单独前往.
同位语从句用于解释说明前面的名词.如：
The fact that the earth is round is true.地球是圆的的事实是真实的.（that从句用于解释说明the fact）
定语从句相当于一个形容词,用于修饰前面的名词.如：
The student who answered the question was John.回答问题的学生是John.
状语从句相当于一个副词,如：
When it rains,I usually go to school by bus.天下雨时,我通常坐公共汽车上学.（时间状语）
If he comes tomorrow,you will see him.如果他明天来,你就可以
看见他.（if 引导的条件状语从句,其结构为：if +状语从句,＋主句）.要注意在状语从句中有一个规则是“主将从现”,即主句是将来时,则从句要用一般现在时表示将来.
主句和从句的划分方法是相同的.句子的成分从谓语动词处来划分比较容易.谓语动词前面的部分是主语,后面常接宾语,修饰谓语动词的是状语,修饰主语、宾语的是定语,若谓语是系动词,则系动词后的部分是表语.如：
I am a teacher.其中,I 是主语,am是谓语,a teacher 是表语.
He likes playing football very mucy.其中,he是主语,likes是谓语,playing football是宾语,very much是状语.
英语中8种从句介绍
1定语从句
2时间状语从句
3地点状语从句
4条件状语从句
5同位语从句
6表语从句
7宾语从句
8主语从句
名词性从句：在句子中起名词作用的句子叫名词从句(Noun Clauses）.名词从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同的语
法功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句.
引导名词性从句的连接词
引导名词性从句的连接词可分为三类：
连接词：that,whether,if 不充当从句的任何成分）
连接代词：what,whatever,who,whoever,whom,
whose,which.
连接副词：when,where,how,why
不可省略的连词：
1.介词后的连词
2.引导主语从句和同位语从句的连词不可省略.
That she was chosen made us very happy.
We heard the news that our team had won.
比较：whether与if 均为"是否"的意思.但在下列情况下,whether 不能被if 取代：
1.whether引导主语从句并在句首
2.引导表语从句
3.whether从句作介词宾语
4.从句后有"or not"
Whether he will come is not clear.
大部分连接词引导的主语从句都可以置于句末,用 it充当形式主语. It is not important who will go.
It is still unknown which team will win the match.
）由从属连词that引导的从句叫做名词性that-从句.That只起连接主句和从句的作用,在从句中不担任任何成分,本身也没有词义.名词性that-从句在句中能充当主语、宾语、表语、同位语和形容词宾语,例如：
主语：That he is still alive is sheer luck.他还活着全靠运气. 宾语：John said that he was leaving for London on Wednesday.约翰说他星期三要到伦敦去.
表语：The fact is that he has not been seen recently.事实是近来谁也没有见过他.
同位语：The fact that he has not been seen recently disturbs everyone in his office.
近来谁也没有见过他,这一事实令办公室所有的人不安.
形容词宾语：I am glad that you are satisfied with your job. 你对工作满意我感到很高兴.
2）That- 从句作主语通常用it作先行词,而将that-从句置于句末,例如：
It is quite clear that the whole project is doomed to failure.很清楚,整个计划注定要失败.
It's a pity that you should have to leave.你非走不可真是件憾事
一、什么是英语从句?
要回答这个问题,先要弄清楚两个小问题：
1、什么叫英语的句子
一般情况下,英语句子中必定有一个主语和谓语,或者说,有主语和谓语组成的句子就是句子.例如：
Mr. Wang teaches English in a middle school.
Many trees were planted last spring.
2、英语句子的成份
英语的句子中,不仅只有主语和谓语,还有其它的句子成份,其中最主要的成份有：主语、谓语、宾语、状语、定语等.这几种成份在句子的位置大致是：
(状语) + (定语)主语(定语) + (状语)谓语(状语) + (定语)宾语(宾语补足语) + (状语)
也就是,定语一般位于主语和宾语的前后；状语一般位于谓语的前后；及物动词后一般接宾语和宾语补足语.有一点请注意：英语句子中状语的位置非常灵活,它在句首、句中、句末都可以.
3、什么是英语的从句
在明白了英语句子的成份之后,再来讨论英语从句就比较简单了.因为,什么叫从句呢?就是英语句中的某一成份不是一个单词或词组,而是一个句子,那么这个担任成份的句子就叫从句.如果定语是一个句子,它就叫定语从句；如果宾语是一个句子,它就是宾语从句.依此类
推.例如：
The boy and the dog [that are in the picture ]are very lovely. (括号中that开始的句子就是定语从句)
We revisited the village [where we had worked before.] (括号中where引导的句子也是定语从句)
He learned [that this was a hard work (which must be finished in a week.)] (这句里有两个从句,方括号由that引导的是宾语从句；在这个宾语从句中又包含了一个由which引导的定语从句.)
因此,对于一个比较复杂的较长的英语句子来说,它就可能存在几个句子,即主句和担任各种成份的从句.从这个角度看,也可以说从句是句子中的句子.
二、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.定语从句通常出现在先行词之后,由关系词（关系代词或关系副词）引出.
关系代词有：who, whom, whose, that, which等.
关系副词有：when, where, why等. 18.1 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?
他就是你想见的人吗?（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) 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 在句中作宾语）
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 18.2 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助他的理由吗?
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,在口语中that常被省略,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.
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；而不及物动词则要求用关系副词.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.
内容提要
定语从句是由关系代词和关系副词引导的从句,其作用是作定语修饰主句的某个成分,定语从句分为限定性和非限定性从句两种.状语从句分为时间状语从句,结果状语从句,让步状语从句,原因状语从句,条件状语从句以及行为方式状语从句.名词从句包括主语从句,宾语从句,表语从句和同位语从句及there be句型.
一、限定性定语从句
1. that即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在从句中作宾语则不能省略.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all, anything, much等,这时的that常被省略
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
5. where是关系副词,用来表示地点的定语从句
6. 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 besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
7. 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
8. 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
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,通常和主句间用逗号隔开,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. 在引导限定性定语从句时,that有时相当于in which, at which, for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed. 人们对白日做梦的态度正在改变,这与人们对夜间做梦的看法的变化有非常相似之处.
I like the music for the very reason that(for which) he dislike it. 我出于某种原因喜欢这种音乐,而他恰恰与我相反.
We arrived the day that(on which) they left. 刚好我们到的那天他们走了.
3. 有时as也可用作关系代词
4. 在非限定性定语从句中,不能用that,而用who, whom代表人,用which代表事物
先行词:是在定语从句中,被定语从句所修饰的名词.例如:
He is a teacher who teach our English.在这里定词从句who teach our English是来修饰前面的名词teacher.所以teacher就是一个先行词.
再说下它的用法：
1、先行词指人时,引导词可用Who,Whom,及that,其中当引导词在句中作主语时用Who或that；当其充当宾语时用whom或that,在非正式宾语中也可用who,也可省略.
a That boy who/that broke the window is called Tom.
b The person to whom you just talked is Mr Li.
b 句可改为：The person(that/whom/who)you just talked to is Mr Li.
2、先行词指物时,引导词用that或which
a.They planted the trees which didn’t need much water.
b .The fish (which)we bought were not fresh.
3、先行词指时间时,引导词用When/on which或in which
a.I still remember the day when/on which I first came to Bei jing.
b.I'll never forget the year when/ on which we worked on the farm.
4、先行词指地点时,引导词用Where或in which
This is the house where/in which we lived last year.
或:This is the house that/which we lived in last year.
5、whose在定语从句中作定语时,可用来指人,也可以用来指物,如:
a.This is the boy whose mother died a month ago.
b.This is the house whose windows were broken.此句可改成：This is the house the windoues of which were broken.
6、先行词表示原因时,引导词用why,如:
The reason why he was late for school was that he had been knocked down by a bike.
二、物殊情况：
尽管有以上基本原则,但要学好定语从句更应注意以下特殊情况；Ⅰ、当定语从句的先行词为表示人的不定代词,如anyone,anybody,everyone,everybody,noone,nobody,all,
these ,those等时,用who而不用that
Those who break the rule are pulished.
Anybody who had eyes could see the elephant was like a snake. Ⅱ.以who或which作主语的特殊疑问句中先行词指人,引导词只用That,如:
a.Who is the person that is standing at the gate ?
b.Which of you that knows something about English doesn’t know this word?
Ⅲ、先行词指物时引导词用that而不用which的情况:
1、先行词有序数词或形容词最高级修饰时,
This is the best composition that has been written in English.
2、先行词是all,something,anything,nothing,everything,little,few,much等不定代词时
There is nothing/little/much that we can do for her.
3、先行词被all,every,no,some,any,little,much等修饰时
I’ve read all the books that you gave me.
4、先行词被the only/very等修饰时
This is the very/last place that they visited yesterday. 5、有两个以上先行词,分别表示人或物时
They talked about the teachers and the schools that they had visited.
6、先行词为基数时
Yesterday I caught two fish,Now you can see the two that are still alive in a basin of water.
Ⅳ.time为先行词时,前边如有序数词修饰时,定语从句引导词用that或什么也不用,如没序数词修饰时,用when或that均可
a.This is the last time(that)I shall give you a lesson.
先行词指人时,引导词可用Who,Whom,及that,其中当引导词在句中作主语时用Who或that；当其充当宾语时用whom或that,在非正式宾语中也可用who,也可省略.
a That boy who/that broke the window is called Tom.
b The person to whom you just talked is Mr Li.
b 句可改为：The person(that/whom/who)you just talked to is Mr Li.
2、先行词指物时,引导词用that或which
a.They planted the trees which didn’t need much water.
b .The fish (which)we bought were not fresh.
3、先行词指时间时,引导词用When/on which或in which
a.I still remember the day when/on which I first came to Bei jing.
b.I'll never forget the year when/ on which we worked on the farm.
4、先行词指地点时,引导词用Where或in which
This is the house where/in which we lived last year.
或:This is the house that/which we lived in last year.
5、whose在定语从句中作定语时,可用来指人,也可以用来指物,如:
a.This is the boy whose mother died a month ago.
b.This is the house whose windows were broken.此句可改成：This is the house the windoues of which were broken.
6、先行词表示原因时,引导词用why,如:
The reason why he was late for school was that he had been knocked down by a bike.
英语语法: 英语从句完全汇总 一.主语从句 主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it 代替，而本身放在句子末尾。 1. It 作形式主语和it引导强调句的比较 It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人是也可用who/whom。例如： It is a pity that you didn’t go to see the film. It doesn’t interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window. 2. 用it 作形式主语的结构 (1) It is +名词+从句 It is a fact that …事实是… It is an honor that …非常荣幸 It is common knowledge that …是常识 (2) it is +形容词+从句 It is natural that…很自然… It is strange that…奇怪的是… (3) it is +不及物动词+从句 It seems that…似乎… It happened that…碰巧… (4) it +过去分词+从句 It is reported that…据报道… It has been proved that…已证实… 3. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。 (2) It is said , (reported) …结构中的主语从句不可提前。例如： It is said that President Jingo will visit our school next week. (right) That President Jiang will visit our school next week is said. (wrong) (3) It happens…, It occurs…结构中的主语从句不可提前。例如： It occurred to him that he failed in the examination. (right) That he failed in the examination occurred to him. (wrong) (4) It doesn’t matter how/whether …结构中的主语从句不可提前。例如： It doesn’t matter whether he is wrong or not. (right) Whether he is wrong or not doesn’t matter. (wrong) (5) 含主语从句的复合句是疑问句时，主语从句不可提前。例如： Is it likely that it will rain in the evening? (right) Is that will rain in the evening likely? (wrong) 4. What 与that 在引导主语从句时的区别 What 引导主语从句时在句时在从句中充当句子成分，如主语.宾语.表语，而that 则不
（1）表语从句 1．定义：用作表语的从句叫做表语从句。 2．构成：关联词+简单句 3．引导表语从句的关联词的种类： (1) 从属连词that。如： The trouble is that I have lost his address. 麻烦是我把他的地址丢了。 (2) 从属连词whether, as, as if。如： He looked just as he had looked ten years before. 他看起来还与十年前一样。 The question is whether they will be able to help us. 问题是他们是否能帮我们。 注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如： All this was over twenty years ago, but it's as if it was only yesterday. gh能跟表语从句的谓语动词一般为系动词be, seem, look等。如： It looked as if it was going to rain. 看起来天要下雨了。 连接副词 where, when, how, why。 如：The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。 The question is how he did it. 问题是他是如何做此事的。 That was what she did this morning on reaching the attic. 那就是她今晨上了阁楼干的。 解释： 1．连词because可引导表语从句。如： I think it is because you are doing too much. 我想这是因为你做得太多。 2．在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如： My suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。（2）主语从句 1．定义：用作主语的从句叫做主语从句。 2．构成：关联词+简单句 3．引导主语从句的关联词有三类： (1) 从属连词that。如：That they were in truth sisters was clear from the facial resemblance between them. 很明显，她们确是亲姐妹，她们的脸型很相似。 (2) 从属连词whether。如： Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。 (3) 连接代词who, whom, whose, what, which, whoever, whatever, whichever 连接副词 where, when, how, why。如： What she did is not yet known. 她干了什么尚不清楚。 How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚。 Whoever comes is welcome. 不论谁来都欢迎。 Wherever you are is my home ---- my only home. 你所在的任何地方就是我的家----我唯一的家。 解释： 1．主语从句能用it作形式上的主语。常以it作形式主语的句型有： A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。如： It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。 It is probable that he told her everything. 很可能他把一切都告诉她了。 B. It+be+名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.)+that
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 said\reported\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）非谓语动词之后的宾语从句 Reading that it was just a difference in custom, the foreigner smiled and said nothing. 这个外国人知道了这只是风俗的不同后，就笑了笑，没说什么。 On being asked whether he had any good food in Germany, he answered ”Terrible”. 一问到他在德国是否吃过什么好菜，他就回答说：“糟糕的很”。 3)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. 4)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。不缺其他成分时，用that引导，且不可省略。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.
从句 从句按其在主句中的句法功能可分为三类: 即名词性从句、形容词性从句(即定语从句)和副词性从句(即状语从句)。 引导从句的词称作关联句. 一、名词性从句 引导这些名词性从句的关联词包括: 从属连词that, if, whether; 连接代词 who,whoever,whom,whomever,which,whichever,what,whatever,wh ose; 连接副词where, when, why, how。 其中, 从属连词只起连接作用, 在从句中不充当任何句法成分, 而连接代词和连接副词既起连接作用, 在从句中又充当一定的成分. That Owen should have married his cousin is not at all surprising. The fact is that he didn't go to the dinner party. I don't know if he will attend the meeting. Have you heard the news that Mary is going to marry Tom? 你听说玛丽要和汤姆结婚的消息了吗?(that引导同位语从句) [提示]
1. 在含有主语从句的复合句中, 为保持句子平衡, 常用it作形式主语,而将真正的主语从句置于句末. It's well-known that water is indispensable to life.(形式主语) 2. 为保持句子平衡, that引导的宾语从句也常用it代替, 而将真正的宾语从句置于主句句末。这常常出现在主句有形容词或分词作宾语补足语的情况下。 He made it quite clear that he preferred to live here. 3. 从属连词whether和if都作“是否…”解, 但if不可引导主语从句和表语 从句。whether可与or(not)连用, 而if不可以。 I don't know whether (if) she is at home. Whether she comes or not makes no difference. 4. that和what引导名词性从句的区别: that在从句中不充当成分,而what在从句中充当一定的成分, 如主语、表语、宾语等。that可省略, what则不可省。 He always means what he says. She suggested (that) he do it at once. 5. 同位语从句大多由从属连词that引导, 常跟在下列名词后面, 如fact, idea, opinion, news, hope, belief等, that不可省。同位语从句一般用来解释说明这些名词的具体含义和内容。 We are familiar with the idea that all matter consists of atoms. The news that we are invited to the conference is very encouraging.
高中英语从句大全 1）表语从句 1.定义：用作表语的从句叫做表语从句。 2.构成：关联词+简单句 3.引导表语从句的关联词的种类： （1）从属连词that.如： The trouble is that I have lost his address.麻烦是我把他的地址丢了。 （2）从属连词whether，as，as if.如： He looked just as he had looked ten years before.他看起来还与十年前一样。 The question is whether they will be able to help us.问题是他们是否能帮我们。 注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如： All this was over twenty years ago，but it’s as if it was only yesterday. 这都是20多年前的事了，但宛如昨天一样。 能跟表语从句的谓语动词一般为系动词be，seem，look等。如： It looked as if it was going to rain.看起来天要下雨了。 （3）连接代词who，whom，whose，what，which，whoever，whatever，whichever 连接副词where，when，how，why. 如：The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。 The question is how he did it.问题是他是如何做此事的。 That was what she did this morning on reaching the attic.那就是她今晨上了阁楼干的。 解释： 1.连词because可引导表语从句。如： I think it is because you are doing too much.我想这是因为你做得太多。 2.在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如： My suggestion is that we （should）start early tomorrow.我的建议是我们明天一早就出发。2）主语从句 1.定义：用作主语的从句叫做主语从句。 2.构成：关联词+简单句 3.引导主语从句的关联词有三类： （1）从属连词that.如：That they were in truth sisters was clear from the facial resemblance between them. 很明显，她们确是亲姐妹，她们的脸型很相似。 （2）从属连词whether.如： Whether he’ll come here isn’t clear.他是否会来这里还不清楚。 （3）连接代词who，whom，whose，what，which，whoever，whatever，whichever 连接副词where，when，how，why.如： What she did is not yet known.她干了什么尚不清楚。 How this happened is not clear to anyone.这事怎样发生的，谁也不清楚。 Whoever comes is welcome.不论谁来都欢迎。 Wherever you are is my home —— my only home.你所在的任何地方就是我的家——我
各种从句的英语表达 主语subject 谓语predicate 宾语object 定语attribute 状语adverbial 补足语complement 表语predicative 同位语从句: appositive clause 定语从句: attributive clause 非限制性定语从句Non-restrictive Attributive Clause 限制性定语从句restrictive Attributive Clause 先行词: an antecedent 表语从句：predicative clause 1.宾语从句： 1.主句现在时从句根据实际进行调整： He says (that) he will have a walk soon.（一般将来时） He said he would take a rest.（过去将来时） 2.主句过去时从句过去时：He wondered if I would come. 3.从句表客观真理，用一般现在：Mr. Li said the moon is smaller than the earth. ＊＊4宾语从句用陈述句语序。 Could you tell me that when you will get back to Wuhan?（不是will you） 2.状语从句： 1；状语从句中if(如果), unless(除非)，when(当…的时候), as soon as(一…就…)，before, after, until, as(当…的时候)所引导的状语从句用一般现在时。 例句：I will call you up if I leave for Shanghai next week.（一般将来时） Wait for your brother at the bus station until he arrives.（祈使句） You may take a rest when/until you finish doing your work. (不表过去的情态动词) 2；主句过去时从句过去完成时（had done）： When he got to the park, his classmates had left. 3.定语从句： 关系代词who和whom只指人，which只指物。That和whose既可指人又可指物。关系副词where指地点，when指时间。 例句：1：She is a girl who/that is beautiful and kind-hearted.(好心的) 2：She is a girl (who/whom/that) I know very well.（当girl作宾语时，关系代词用宾格，who和whom都可以） 3：That boy whose（指人）hair is very long is my brother. (物为人所有) 4：The girl who is tall is my sister. / I own（拥有）a bike whose（指物）
} 定语从句：在复合句中作定语用修饰句子中某一名词或代词的从句叫定语从句。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。 定语从句功能及位置 功能：定语从句相当于形容词，修饰名词或代词，在句中作定语。 位置：定语从句置于被修饰词之后。 ① 定语从句的位置：放在名词或代词的后面。如：The man who has an umbrella in his hand is my uncle. (手上抓了一把雨伞的人是我的叔叔。) ② 语法术语的改变：被修饰的名词或代词称为先行词；引导定语从句的连接词称为关系词,其中that、which、who称为关系代词,where、when、how称为关系副词。 ③ 关系代词或关系副词的作用： @ 关系代词who、whom 和whose指人,分别在从句中作主语、宾语和定语。which 指物that多指物, 有时也指人,它们在从句中可以作主语或宾语。定语从句中关系代词作从句宾语时可以省略。This is the thief (that/who/whom) we have been looking for these days. (这个就是我们近日一直在找的小偷。) / Please find a room which is big enough for all of us to live in. (请找一间足够大能住下我们全体的房间。) 关系副词when或where引导定语从句时,它们在从句中分别作时间状语和地点状语。如：This is the room where they had a quarrel a week ago. (这是一个星期前他们吵架的房间。) / I can never forget the day when I first saw you. (我永远不会忘记第一次见到你的日子。) ④ 限制性定语从句和非限制性定语从句。限制性定语从句在句中不能省略,否则主句意思就不完整。非限制性定语从句和主句之间往往用逗号分开,这种从句是一种附加说明,如果从句子中省去,也不致于影响主句的意思。如：She spent the whole evening talking about her latest book, which none of us had heard of. (她一个晚上都在谈论她最近的书,我们一个人都没有听说过那本书。)
英语从句大全 宾语从句： 1，定义：宾语从句是指在复合句中做及物动词的宾语的从句，也可以作介词和某些形容词的宾语。宾语从句一般用于及物动词之后，或用于介词之后。 2，表现形式： A 及物动词后的宾语从句 （1）有从属连词引导 I think (that) watching TV too much is bad for people’s health. 我认为看太多电视对身体有害。 Recent court decisions have ordered that public schools take the necessary steps to provide that education. 最近的法院裁决责令公立学校采取必要步骤提供那种教育。 I don’t know if other clients are going to abandon me,too. 我不知道其他顾客是否也会抛弃我。 （2）有连接代词引导 This test is intended to reinforce what you have learnt in the past few weeks. 这次考试的目的在于巩固你们在过去几周所学的知识。
You may never find out who dealt with the complaint later. 过后你可能无法知道谁处理的投诉。 It is your task to find out into which of the two kinds of jobs you fit. 你的任务是搞清楚，这两种工作你适合哪种。 （3）有连接副词引导 There are still no forecasts for when faster-than-light travel will be available. 对于超光速旅行何时能实现，目前还没有做出预料。 We can’t understand why he avoided speaking to us. 我们不理解他为什么不跟我们说话。 They know exactly where they are going. 他们清楚地知道自己的行动方向。 We need to understand how the normal cell controls itself. (how表示方式) 我们需要了解正常细胞是如何自我控制的。 We do not know how far mankind will be able to solve these problems.(how表示程度) 我们不知道人类能够把这些问题解决到什么程度。
各种从句类型 一、名词性从句 1、主语从句： 定义：从句充当复合句的主语。 位置：①从句位于句首；②it（无意义）作形式主语放在句首，从句放在主句之后。 引导词：that，whether（连词） who，what，which，-ever（疑问代词/连接代词） when，where，how，why，-ever（疑问副词/连接副词） 练习：（1）从句位于句首 1.物价要上涨是明显的(go up) ____________________________________________________________________ 2.派谁去还没有决定 ____________________________________________________________________ 3.不清楚她为什么那样做(clear) ____________________________________________________________________ 4.你对我说的话很有用 ______________________________________________________________________ (2)it作形式主语 5.很奇怪他对此一无所知 _______________________________________________________________________ 6.碰巧那天她不在家（happen） _______________________________________________________________________ *与强调句句型比较 1. It is clear that he loves singing. 2. It is in Shanghai that I saw the film. 二、宾语从句 定义：从句充当复合句中的宾语。 位置：在及物动词后（动宾结构）；在介词后（介宾结构）；it作形式宾语，从句放在主句后； 主语+be+表语（adj.）+宾从 引导词：that、whether、if（连词）；who，whose，what，which，-ever（疑问代词/连接代词）；when,where,how,why（疑问副词/连接副词） 练习： （1）动宾、介宾结构 7.我们认为这是圈套。（圈套trick） _______________________________________________________________________ 8.我会留意我是否能帮助你 _______________________________________________________________________ 9.请跟我谈谈任何使你烦心的事（trouble） _______________________________________________________________________ (2)it作形式宾语 10.我想当然地认为你会来(take it for granted) _______________________________________________________________________ 11.我会很感激如果你把电视的音量调低（would appreciate it） _______________________________________________________________________ (3)主语+be+表语（adj.）+宾从 12.我确信他会赢（be sure） _______________________________________________________________________ 13.我肯定她看见我了(be certain) _______________________________________________________________________
英语中六大从句用法总结 从句是指用于复合句中担当某个句子成分的主谓结构。虽说从句自身的句子结构是完整的，但是它不能视为独立的句子，因为它离开了主语就无法独立、完整地表达意思。按其所能表达的意义而言,它相当于一个词或是一个词组. 按从句的句子功能划分（也就是按从句在句子中所担任的成分来划分），从句可分为：主语从句、宾语从句、表语从句、同位语从句、定语从句和状语从句。 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 said\reported\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.
英语从句大全 1 ）表语从句 1?定义：用作表语的从句叫做表语从句。 2?构成：关联词+简单句 3?引导表语从句的关联词的种类： （1）从属连词that.如： The trouble is that I have lost his address.麻烦是我把他的地址丢了。 （2）从属连词whether，as，as if.如： He looked just as he had looked ten years before.他看起来还与十年前一样。 The question is whether they will be able to help us.问题是他们是否能帮我们。 注：从属连词if 一般不用来引导表语从句，但as if却可引导表语从句，如： All this was over twenty years ago，but it ' s as if it was only yesterday. 这都是20多年前的事了，但宛如昨天一样。 能跟表语从句的谓语动词一般为系动词be, seem, look等。如： It looked as if it was going to rain. 看起来天要下雨了。 （3）连接代词who，whom，whose，what，which，whoever，whatever，whichever 连接畐U词where，when，how，why. 女口：The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。 The question is how he did it.问题是他是如何做此事的。 That was what she did this morning on reaching the attic.那就是她今晨上了阁楼干的。 解释： 1连词because可引导表语从句。如： I th ink it is because you are doi ng too much.我想这是因为你做得太多。 2. 在一些表示建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如： My suggestion is that we （should）start early tomorrow.我的建议是我们明天一早就出发。 2 ）主语从句 1. 定义：用作主语的从句叫做主语从句。 2. 构成：关联词+简单句 3. 引导主语从句的关联词有三类： （1）从属连词that.女口：That they were in truth sisters was clear from the facial resemblanee between them. 很明显，她们确是亲姐妹，她们的脸型很相似。 （2）从属连词whether.如： Whether he ' ll come here isn '他是否会来这里还不清楚。 （3）连接代词who，whom，whose，what，which，whoever，whatever，whichever 连接畐U词where，when，how，why.女口： What she did is not yet known.她干了什么尚不清楚。 How this happened is not clear to anyone.这事怎样发生的，谁也不清楚。 Whoever comes is welcome.不论谁来都欢迎。 Wherever you are is my home ------- m y only home.你所在的任何地方就是我的家-------- 我唯一的家。 解释： 1. 主语从句能用it作形式上的主语。常以it作形式主语的句型有： A. lt+be+ 形容词（obvious，true，natural，surprising，good，wonderful，funny，possible，likely，certain，probable，etc.）+that 从句。如：
今天起为大家介绍一下英语中几大从句的用法以及其相关内容， 如果总结地不够详尽的， 还 将从句放在句末。常见的句型有： *lt is a fact ? a pity ? a questi On ?good n ews that... *lt seems ?appears ?happe ned ?has turned out that... ∣ *lt is clear ?importa nt ?likely ?possible that... *It is said ?reported ?estimated ?has bee n PrOVed that... It is Said that comic books Create a Conn ecti On betwee n people of the Same gen erati on. ∣ It SeemS that the PerfOrma nce 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 experie nce. 3) what,who,whe n,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 pla n is to be Carried out should be discussed aga in. I did know Why I felt like crying. To be ContinU ed: 宾语从 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 Cha nge the SitUati on. *All this is differe nt from What AmeriCa n young people would Say about frien dship. *He is Certain that WatChing so much television is not good for ChiIdren. *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 Cha nge 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 did n't think that the money WaS well SPe nt. To be Continued: 表语从句 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 请各位朋友补充说明，谢谢。 —I 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