复合句一-主语从句
英语复合句讲解
复合句是由一个主句和一个或一个以上的从句构成。主句是全句的主体，往
往可以独立存在；而从句仅是句子的一个成分，故不能独立存在，必须有一个
关联词引导。从句按其在复合句中的作用,分为。1、定语从句（形容词从句）2、名词从句（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）
主语从句
一．在复合句中充当主语成分的句子叫做主语从句。
二.主语从句主要有三类：
（1）由连词that引导的主语从句:
引导词that无含义,在句中不做成分,不
可以省。
例如：That you will win the medal seems
unlikely.
你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.
你如此冷淡使我很烦恼。
That she survived the accident is a
miracle.
她在事故中幸免于难简直是奇迹。
（2）用连词whether 引导的主语从句:whether有含义(是否)
例如：Whether she is coming or not
doesn’t matter too much.
她来不来都无关紧要。
（3）用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what,
whoever, whomever, whichever,
whatever引导的名词性从句中，其连接
代词在句中起名词性作用，担当一定成
分).
例如：What you need is more practice.
你所需要的是更多的训练。
What I want to know is this. 我
想知道的就是这事。
Whatever we do is to serve the
people.我们无论做什么都是为人民服
务。
（4）用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句
中作状语。)
例如:Where we should leave is a
problem. 我们什么时候离开还是一个问
题。
When they will come hasn’t been made
public.他们什么时候来还不知道。
三.注意点:
1.it 做形式主语,而将主语从句放在句末
（尤其是当谓语较短时）。
例如：That light travels in straight lines is known to all.
光沿直线传播，这是众所周知的事。
=It is known to all that light travels in straight lines.
众所周知光沿直线传播。
When the plane is to take off has not been announced .
飞机何时起飞还没有宣布。
= It has not been announced when the plane is to take off.
还没有宣布飞机何时起飞。
四，固定用法和译法
（1） It is +名词+从句
It is a fact that… 事实是……
It is good news that … ……是好消息
It is a question that … ……是个问题
It is common knowledge
that … ……是常识
类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等。
例如：It is a mystery to me how it happened.
这一切是怎么发生的是个谜。
It is common knowledge that the whale is not a fish.
鲸鱼不是鱼，这是常识。
It is no surprise that Bob will win the game.
鲍勃会赢得这场比赛，这不足为奇。（2） It is +形容词+从句
It is necessary that … 有必要……
It is clear that … 很清楚……
It is likely that … 很可能……
It is important that … 重要的是……
类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; surprising; interesting; astonishing, etc.
例如：
It is doubtful whether she will be able to come.
她是否能来令人怀疑。
It was really astonishing that he refused to talk to you .
他拒绝和你说话真是令人惊讶。
It is essential that he should be here by the weekend .
周末之前，他应该到这里是必要的。
It seems obvious that we can not go on like this.
很明显我们不能这样下去了。
（3） It is +过去分词+从句
It is said that … 据说……
It is reported that … 据报道……
It has been proved that … 已证明……
It must be pointed out that… 必须指出……
类似的过去分词还有：known; estimated;
expected; believed; thought; hoped;
required; suggested; demanded; made
clear;
例如：It is thought that he is the best player.大家都认为他是最好的选手。
It is estimated that the vase is 2000 years old.据估计这个花瓶有2000年的历史。
It has not been made clear when the new road is to be opened
还没弄清楚这条路将开始通车。
It does not matter if I missed my
train, because there is another
one later.
没有赶上这趟火车没有关系，稍晚还
有一趟。
It happened that I saw him
yesterday.碰巧我昨天看见他了。
六.只用whether不用if引导主语从句.
形式主语IT
有时为了考虑句子平衡（避免头重脚轻），通常在主语从句处使用形式主
语it，而将真正的主语从句移至句末。这分三种情况：
(1)对于以连词that引导的主语从句，通常用形式主语代主语从句：
It’s a pity that he didn’t come. 很遗憾他没来。
It’s vital that we（should）be present. 我们出席是至关重要的。
It was intended that you be the candidate. 大家的意图是让你当候选人。
It is appropriate that this tax be abolished. 废除这个税是恰当的。
It’s unfair that so many people should lose their jobs. 竟有这么多人失业这
是不公平的。
That they should refuse to sign the petition required great courage. 他们拒
绝在请愿书上签字这是需要很大勇气的。
注意：should 用于虚拟语气
用于主语从句中
在“It is ＋形容词／某些动词的过去分词
＋that从句”的结构中，从句的谓语动词用“（should）+ do ”虚拟语气形式来表示命令、要求和建议。这些形容词和过去分词常见的有important（重要的）、essential（必要的）、necessary（必须的）、natural（自然的）、ordered（命令的）、demanded（要求的）、proposed（建议的）、required（要求的）等。
(2)对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：
Whether they would support us was a problem. 他们是否会支持我们还是
一个问题。
It was a problem whether they would support us. 他们是否会支持我们还是一个问题。
(3)对关系代词型what引导的主语从句，通常直接将主语从句放在句首。如：
What we need is money. 我们需要的是钱。
What I want to know is this. 我想知道的就是这一点。
有时也可将助用形式主语。如：
It is clear enough what he meant. 他是什么意思很清楚。
(4)如果句子是疑问句，则必须用带形式主语it的结构：
Is it true that he is the girl’s father? 他是那女孩的父亲，是真的吗？
How is it that you are late again? 你怎么又迟到了？
三、连词that的省略问题
引导主语从句的连词that 有时可省，有时不能省，其原则是：若that引导的主语从句直接位于句首，则that不能省略；若that引导的主语从句位于句末，而在句首使用了形式主语it，则that可以省略：
That you didn’t go to the talk was a pity. 很遗憾你没去听报告。(that不可省)
It was a pity (that) you didn’t go to the talk. 很遗憾你没去听报告。(that可省)
主语从句练习题
Ⅰ．选择题：
1._____ as much as one-fifth of all timber(木
材) harvested is not used.
A. The estimate
B. The estimate
C. They are estimated
D. It is estimated that
? 2. _____ some mammals（哺乳动物）came to live in the s ea is not known.
A. Which
B. Since
C. Alth
ough D. How
3. _____ we have achieved is attributed to the
guidance of our parents
A. Whoever
B. Whatever
C. However
D. That
5. Although _____ happened in this developed country
sounds like science fiction, it could occur elsewhere
in the world.
A. which
B. what
C. how
D. it
6. _____ she had forgotten to take her notebook.
A. That occurred to her
B. Sh
e occurred that
C. To her that occurred
D. I
t occurred to her that
7. I am sure that _____ she said is wrong.
A. which
B. all
C. th
is D. what
8. We lost our way in the forest, and _____ made ma
tters worse was that it was getting dark.
A. that
B. which
C. i
t D. what
9. _____ some mammals came to live in the sea is no
t known.
A. Which
B. Since
C. Althou
gh D. How
10. _____ or not is still uncertain.
A. He’s coming
B. I
f he is coming
C. That coming
D. Whethe
r he’s coming
11. It’s_____ he’ll be able to come.
A. doubt whether
B. doubtful
C. doubt i
t D. doubtful whether
12. _____ he is at work in the heart of the big ci
ty or at home in the quiet suburb, Dick’s life is t ied to machines.
A. Whether
B. Til
l C. I
f D. Unless
13. _____ he saw both surprised and frightened him.
A. That
B. Whe
n C. What D. Which
14. _____ is a spell of warm sunshine.
A. What do we all need.
B. Wha
t all we need
C. What we need
D. Wha
t we all need
15. _____ is a pity that he should feel so upset.
A. What
B. Tha
t C. He D. I
t
16. _____ a spoonful of soil can tell us so much ab
out the structure and early history of the moon.
A. Remarkable
B. Quit
e remarkably
C. It is remarkable that
D. I
t is remarkable fact that
17. _____ you nominate will be elected.
A. Who
B. Who
m C. Whomever D. That’s
18. _____ book you borrow must be returned withi
n a week.
A. What
B. Whic
h C. Whichever D. That’
s
19. _____ of us gets home first starts cooking.
A. Who
B. Whic
h C. Whichever D. Anyone
20. _____orders he gives are obeyed.
A. Whichever
B. Whic
h C. Whatever D. Wha
t
21. ____ wants to stay in a hotel has to pay their own way. (浙江 2008)
A. Anyone
B. The one
C. Whoever
D. Who
22. ____ matters most in learning English is enough practice.(2007 全国卷Ⅱ)
A. What
B. Why
C. Where
D. Which
23. ____ fashion differs from country to country may reflect the cultural differences from one aspect. (上海 2002 春)
A. What
B. That
C. This
D. Which
24. ____ we’ll go camping tomorrow depends on the weather. (NMET 1996)
A. If
B. Whether
C. That
D. Where
【巩固练习】
1.__________________________________ hasn’t been decided yet.(pick)
谁将去接他还没有确定。
2.__________________________________ remains unknown.(finish)
我们是否能按时完成工作还不知道
3._____________________________________ is none of my business.(like) 你不喜欢他与我无关。
4._________________________________________ is being
discussed.(abroad)
他将何时出国正在讨论之中。
5.____________________________ in learning English is enough practice.(matter)
英语学习中最重要的是足够的练习。
6.It worried her a bit
______________________________________________.(turn)
她的头发正在变白让她有些担忧。
7.After Yang Liwei succeeded in circling the earth, what our astronauts desire to do ______________________________. (walk)
杨利伟成功地环绕地球后，我们的宇航员所想做的是在太空漫步。
8. ________________________________________ should be punished.(break) 任何违法的人都应该被惩罚。
9.______________________________ we can learn four foreign languages at the same time.(seem)
我们能同时学四门外语似乎不可能。
10._______________________________ was that more than 90% of the students had been admitted to the key universities.
真题：1、The Foreign Minister said, “______ our hope that the two sides will work towards peace.”
A. This is
B. There is
C. That
is D. It is
2、After Yang Liwei succeeded in circling the earth, _____ our astronauts desire to do is walk in space.
A. where
B. what
C. that
D. how
3、____ is not known yet.
A. When she has gone
B. Where she has gone
C. How did she leave
D. Why did she go
4、______ is unfit for the office.
A. It seems to me that
B. It seems to me that he
C. That seems he
D. That seems to him that
5、_______man must fear when traveling in space is radiation from the sun.
A. Which
B.
How C. What D. That
6、_______ beat Xiao Wang black and blue is not known.
A. Whom
B. Whoever
C. Who
D. What
7、________matters much ________ the headmaster supports our activity.
A．It; whether B．What; whether C．As; that D．That; if
8、________ is known to us all is that the Chinese government has spared no efforts to protect people from fake food.
A．As B．It C．That D．What
9、________ Premier Wen Jiabao visited the United States led to the closer relationship between the two countries.
A．Which B．What C．That D．As
10、It is obvious to the students ________ they should get well prepared for their future.
A．as B．which C．whether D．that
11、It is uncertain ________side effect the medicine will bring about，although about two thousand patients have taken it.
A. that
B. what
C. how
D. whether
12、The villagers have already known ______ we'll do is to rebuild the bridge.
A．this B．that C．what D．which
13、It is still under discussion ________the old bus station should be replaced with a modern hotel or not.
A．whether B．when C．which D．where
14、________ Barbara Jones offers to her fans is honesty and happiness.
A. Which
B. What
C. That
D. Whom
15、It was never clear ________ the man hadn't reported the accident sooner.
A. that
B. how
C.
when D. why
I. 用适当的词填空，使句子意思完整。
1. ______ he didn’t attend the meeting yesterday wasn’t quite clear.
2. The Foreign Minister said, “It is our hope ______ the two sides will work towards peace.”
3. ______ team will win the match is still unknown.
4. ______ comes to the party will receive a present.
5. ______ Mary has left is still a question.
6. It’s reported ______ three people were killed in the accident and five were hurt badly.
7. ______ he solved the problem successfully interested all of us.
8. We usually think ______ we can’t get seems better than what we have.
9. It is a fact ______ English is being accepted as an international language.
10. ______ is to be sent there to solve the problem hasn’t been decided. II. 下列各句中均有一处错误，请改正。
1. That the old man’s son wanted to know was where the gold had been hidden.
2. It is reported when China has successfully sent Shenzhou VI spaceship into space.
3. If he can finish his task on time is of great importance.
4. Whether the 2008 Olympic Games will be held in Beijing excited the whole nation.
5. After Yang Liwei succeeded in circling the earth, which our astronauts desire to do is walk in space.
6. Whatever leaves the room last ought to turn off the lights.
7. Why they will solve the serious problem today has not been decided.
8. When will win the English competition is still a problem.
9. How our spring sports meet will be held or not this week is not known yet.
10. It’s strange when he should have gone away without telling us.
1. Light travels faster than sound is common knowledge.
2. If she’s coming or not doesn’t matter much.
3. That the professor said is of great importance.
4. Where will the trees be planted has not been decided.
5. No matter who breaks the rule will be punished.
6. When and where the meeting will be held still remain a question.
7. What were your problems a year ago has now become mine.
8. It was requested that everyone made a speech at the meeting.
1、D。此句为it 放在句首作形式主语，真正的主语是that 引导的从句。
2、B。考查主语从句。从句中动词do缺少宾语，故选what，what引导的从句在句中作主语。
3、B
4、B
5、【解析】C. 考查主语从句，并在主语从句中作fear的宾语what的用法。
6、C
7、A解析：it 是形式主语，真正的主语是whether 引导的从句。句意：校长是否支持我们的活动很重要。故选A项。
8、D解析：what 在这里引导主语从句，选D项。此题要注意分析句子结构，如果题目改为：①________ is known to us all, the Chinese government has spared no efforts to protect people from fake food.该句空处应用As, As 引导非限制性定语从句；②________ is known to us all that the Chinese government has spared no efforts to protect people from fake food.该句空处则应用It, It 作形式主语。
9、C解析：句意：温家宝总理访问美国让两国之间的关系更加密切。“That Premier Wen Jiabao visited the United States”是主语从句，that 在从句中只起连词作用，不作句子成分，本身没有词义，但是不可省略。
10、D解析：it是形式主语，代替后面的主语从句。主语从句结构完整，故用that引导。that在主语从句中不作成分，但不能省略。
11、B解析：句意：尽管大约有两千名病人已经服用了这种药物，但是它会产生什么样的副作用现在还不能确定。根据句意可知应该选择B项引导主语从句。what在这里实际上是作为形容词来修饰后面的“side effect副作用”。一起作从句中bring about的宾语。
12、C解析：句意：村民们已经知道我们要重建这座桥。分析句子结构可知，known 后跟宾语从句，省略了连接词that。此宾语从句中又包含一个主语从句，主语从句中do缺少宾语，所以用what引导该从句作整个宾语从句的主语，答案为C 项。
13、A解析：whether“是否”；when“当……时候”；which“哪一个”；where “哪儿”。句意：旧车站是否要被现代化的旅馆所代替仍在讨论中。根据句意可知选A项。
14、B解析：句意：“巴巴拉·琼斯给予她粉丝的是诚实和快乐。”“________Barbara Jones offers to her fans”在句中作主语，为主语从句。what引导主语从句并且在从句中作offers的宾语，故选B项。which表示“哪一个”；whom表示“谁”。均不符合句意。
15、D解析：句意：这名男子没有早点报告这次事故的原因根本没有搞清楚。it 在句中是形式主语，真正的主语是why引导的主语从句。
16、C
17、C
18、 D
19、A
【答案】
1.Who will pick him up
2.Whether we can finish the work on time
3.That you don’t like him
4.When he will go abroad
5.What matters most
6.that her hair was turning grey
7.walk in space
8.Whoever/Anyone who breaks the law
9.It seems impossible that
10. What made the school proud
Key:
I． 1. Why 2. that 3. Which 4. Whoever
5. Whether
6. that
7. How
8. what
9. that 10. Who
II． 1. That → What 2. when → that 3. If → Whether 4. Whether → That 5. which → what
6. Whatever → Whoever
7. Why → How 8. When → Who
9. How → Whether 10. when → that
1. 在句首加That（并将Light改为light）。that虽无词义但引导主语从句位于句首时不能省略。
2. 将If改为Whether。if, whether都可表示“是否”，但if不能引导位于主句之前的主语从句，它可以引导位于主句之后带有形式主语it的主语从句。
3. 将That改为What。that引导主语从句时无词义。What the professor said 表示“教授所说的”。
4. 将will置于trees之后。主语从句要用陈述句语序。
5. 将No matter who改为Whoever。引导让步状语从句时二者可互换，但引导名词性从句时只能用whoever。
6. 将remain改为remains。主语从句表示单一概念时，谓语要用单数形式。
7. has要改为have。主语从句表示复数概念时，谓语要用复数形式。
8. 将made改为（should） make。在“It is requested / ordered / suggested + that从句”中，从句要用虚拟语气，即谓语用“should + 动词原形”，should 可省略
高中英语语法主语从句 第一节主语从句 1．考点解析。 1．主语从句一般分为三类：由what等代词引导的主语从句；由连词that 引导主语从句，多数情况下由it作形式主语，that从句放到句子后面去；由连接代词或连接副词（或whether）引导的主语从句。 What they are after is beauty. It is not your fault that we can’t arrive on time. When they will arrive has not been decided. 2. 由关系代词what引导的主语从句，也可由whatever（“所…的一切”）或 whoever（“一切…的人”）引导。 Whatever he wants is your support. Whoever comes will be welcome. 3. 大多数主语从句都可用it代替，作形式主语，把主语从句放在句尾。要注意it代替主语从句和it引导的强调句的区别。强调句的结构是it is/was….+that…，强调人是可把that 换做who，whom，whose。如强调的是状语时，也只能用that,而不能用when, where, how, why等。 It was in Paris that they fell in love with each other. It is the lady who was my English teacher. It was last semester that he won the first prize. 2. 试题详解。 1．______ he needs is more experience. A. Who B. That C. What D. How 2.It was because of the heavy snow ______ the train was late. A. why B. that C. so D. thus 3．It doesn’t matter ______ he likes or not. A. whether B. what C. when D. that 4______ he has won the Noble Prize has been proved to be true. A. What B. How C. It D. That 5．What he wants _______ to sleep more. A. are B. have been C. is D. were 6．______ we can begin this investigation is still a question. A. When B. Why C. What D. That 7．It is ______ that the highway will be open to traffic nest year. A. report B. reported C. reporting D. by report 8．______ fails to see this will make a big mistake. A. Whatever B. what C. wherever D. Whoever 9．It is a mystery _____ the prisoner escaped. A. why B. how C. what D. that 10．It was last summer _____ he graduated from the college. A. that B. when C. / D. where 3. 实战演练。 1. We didn’t know ______ she didn’t come. A. why B. that C. when D. it 2. It is still doubtful _______ she would play the part.
语法要点剖析 一、名词性从句 主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。 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 1. 主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if 和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副 词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。 It is known to us how he became a writer. 我们都知道他是如何成为一名 作家的。 Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下： （1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句 （3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句 另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is a pity (a shame, no wonder, etc.) that… It is suggested (requested, proposed, desired, etc.) that… 2. 宾语从句 名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。 1. 由连接词that引导的宾语从句 由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：He has told me that he will go to Shanghai tomorrow.他已经告诉我他明天要去 上海。 We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。
名词性从句---主语从句 1. What is needed for the space trip is careful preparation. 2. Her wish is that she can lose weight soon. 3. I think that woman can reach every high achievements in many fields of science. 4. We were very excited at the news that our team had won. 引导名词性从句的关联词可分为三类： 一．从属连词：that（无任何词意） whether, if（均表示“是否”表明从句内容的不确定性） as if ,as though（均表示“好像”，“似乎”）以上在从句中均不充当任何成分二．连接代词：what, who, whom, which，whose, whatever, whoever, whichever(作主宾表定) 三．连接副词：when, where, how, why(作状语) I.主语从句 1.定义：在句子中担当主语的是一个从句,这个从句就叫做主语从句。 2.位置：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。 3.引导主语从句的关联词： (1)从属连词that,whether,if (在从句中不充当成分，仅起连接作用) That Jack won the match yesterday surprised us. Whether he’ll come here isn’t clear. (此处不能用if) (2)连接代词who, whom, whose, what, which, whoever, whatever, whichever(充当主宾表定) What she did is not known. Whoever comes is welcome. (3)连接副词where,when,how,why(在从句中充当状语) How this happened is not clear to anyone. When the meeting will be held is decided by our manager. 4.有时为了避免头重脚轻，常用it作形式主语，而把真正主语放在句子末尾。 How the book will sell depends on its author. = It depends on its author how the book will sell. That he is the best student in the class is obvious. = It is obvious that he is the best student in the class. 用it作形式主语的几种常见结构： (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… It ap pears that… 似乎… (4) It ＋过去分词＋从句
高考总复习：主语从句及宾语从句真题再现 1. (2016 高考北京卷)Your support is important to our work．________ you can do helps. A．However B．Whoever ．Whatever D．Wherever 2. (2016 高考江苏卷)It is often the case ______anything is possible for those who hang on to hope．A．why B．what C．as D．that 3. (2017 高考北京卷)Jane moved aimlessly down the tree-lined street, not knowing ______she was heading. A. why B. where C. how D. when 4. (2017 高考北京卷) Every year, ______ makes the most beautiful kite will win a prize in the Kite Festival. A. whatever B. whoever C. whomever D. whichever 5. （2017 高考江苏卷）We choose this hotel because the price for a night here is down to $20, half of _________ it used to charge. A. that B. which C. what D. how 6. （2017 高考江苏卷）He hurried home, never once looking back to see if he __________. A. was being followed B. was following C. had been followed D. followed 7. （2017 高考天津卷）She asked me _______ I had returned the books to the library, and I admitted that I hadn’t. A. when B. where C. whether D. what 8.（2017 北京西城一模）It is entirely true _______ children learn more from people they like. So, try to be friends with them. A. what B. why C. that D. how 9. （2017 北京西城一模）The results of the experiment turned out contrary to ______ was expected. A. what B. which C. whom D. that 答案与解析 1.C；题目考查主语从句。helps是谓语，“________ you can do”是主语部分，即主语从句，在主语从句中，do后缺少宾语，表示“任何事情”，因此用whatever引导，故选C。 2. D；考查主语从句。句意：通常情况下，对于那些心存希望的人一切皆可能是事实。该句是主语从句，句子的it是形式主语，故用that引导从句作真正的主语从句。 3. B。考查宾语从句。句意：Jane漫无目的地走在两旁栽树的街道上，不知道她将去往何方，根据句意可知选B。 4.B。考查主语从句。句意：每年，任何一个做出最漂亮的风筝的人将会在风筝节获奖。_____ makes the most beautiful kite是主语从句，根据意思可知答案。 5. C。考查宾语从句。“half of _________ it used to charge”是$20的同位语，即原来价格的一半是现在的$20；另外，of后跟名词或名词短语构成介宾短语，所以，这里是宾语从句；宾语从句
练习（主语从句） 一、.关联词分类和基本句型： (1)从属连词that。如：That they were indeed 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。 ______ we need more equipment _____ quite obvious. 我们需要更多的设备，这是很明显的。 (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。 ______ he will join us won't _____ too much difference.他是否和我们一起干无所谓。 (3)连接代词who, whom, whose, what, which, whoever, whatever, whichever 连接副词where, when, how, why。如： What you need is more practice. 你需要的是更多的练习。 Whoever wants it may have it. 谁要都可以给他。 _____she did ____ not yet known. 她干了什么尚不清楚。 _____ this happened is not _____ to anyone. 这事怎样发生的，谁也不清楚。 ______ comes _____ welcome. 不论谁来都欢迎。 二、主语从句后置： 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。 _____ _____ probable ______ 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从句。如：It’s _____ ______ that we can’t go.很遗憾我们不能去。 It’s ______ _______ that our team should have won the game. 我们没赢这场比赛真意外。 C.It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句。如： It is ______ ______Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。 It is ______ _______ China has sent another man-made earth satellite into orbit. 据报道中国又成功地发射了一颗人造地球卫星。 D.It+seem, happen等不及物动词及短语+that从句。如： It seems that Alice is not coming to the party at all. Alice似乎不来参加晚会。 _____ _______ ______ I was out that day. 碰巧我那天外出了。 E.It+doesn’t matter (makes no difference, etc.)+连接代词或连接副词引起的主语从句。如： It doesn’t ______ _______ she will come or not. 她是否来这无关紧要。 It _____ _____ difference ______ we shall have the meeting. 我们在哪里开会毫无区别。 三、注意连接代词whoever, whatever, whichever等引导主语从句的含义： _______ comes will be welcome. (whoever=the person who) 来的都是客。 _________ he did was right. (whatever=the thing that) 他所做的事情都是正确的。 ________ _____ ______ comes in will receive a prize. (whichever=anyone of you who) 你们当
xx考研英语语法复习主语从句 在复合句中充当主语成分的句子叫作主语从句。具体形式为：引导词引导一个从句作主语;或者it作形式主语+谓语/系表结构+引导词+从句。 ⑴陈述句充当主语从句，连词为that(that没有实际含义，在从句中只起连接作用，不在从句中作任何语法成分)，从句为"that+陈述句"，that不能省略。 【例句】 That Chris Lee won the champion of Super Girl in xx arouse wide public concern. 李宇春赢得xx年超女冠军这件事引起了社会的广泛关注。 ⑵一般疑问句充当主语从句，连词为whether(whether"是否"的含义，在从句中只起连接作用，不在从句中作任何语法成分)，从句为"whether+陈述句语序"，whether不能省略。 【例句】 Whether this is true or not remains a mystery. 这是对是错还是个谜。 ⑶特殊疑问句充当主语从句，连词为特殊疑问词(特殊疑问词都有自己的含义，在从句中作一定的语法成分)，从句为"特殊疑问词+陈述句语序"，特殊疑问词不能省略。 【例句】 例1 --what
What caused the aident remains unknown. 是什么引起了这一事故仍然。 例2--where Where my wife and I should enjoy our honeymoon is still unsettled. 我太太和我应该去哪享受我们的蜜月还没有最后决定。 例3 --which Which university I should choose to continue my further education is a question of great importance. 我应该考哪个大学的研究生是个很重要的问题。 例4--when When and where the test will be given is not yet decided. 什么时候在什么地方进行考试还没定下来。 例5---ever Whoever gets the job will have a lot of work to do. 任何得到这份工作的人都将要有很多工作要做。 例6--how How we can protect the grain from damp needs to be discussed. 我们怎样才能保护粮食不受潮需要讨论讨论。 3.It句型
主语从句与宾语从句 一、名词性从句是四位从句的总称：主语从句、宾语从句、同位语从句、表语从句。这些从句都起到类似于名词的作用。 主从：一个句子充当大句子的主语，就叫主语从句。例如； What I need is money.(主语是What I need作大句的主语) It was not obvious that water is fundamental to the development of life.（It是形式主语，真正的主语是that 从句。） 主语从句的位置有两种，一种是放于句首；一种是用It 作形式主语，从句被放后面。 二、宾语从句：一个小句子充当大句子的宾语。 He asked me how old I was . She took it for granted that I’d be back home an hour ago.（It 作形式宾语，真正的宾语是后面的that从句。） 考点一：语序 What I want to do is to go home immediately.陈述语序。 I asked where the famous restaurant was .陈述语序。 名词性从句的语序应该是陈述句语序。 删除疑问语序（be /助动词、情态动词+主语） 考点二：引导词 That（没成分） That the earth moves around the sun is known to all.(that 引导的句子作大句子的主语，that不能丢。) Whether /if （有时互换，主语从句只能用wheather引导，不能用if .可用if 的地方都能用wheather。） Whether the meeting will be put off depends on the weather . 疑问代词：what,who, whom,which,whose 在从句中有成分 What he has is just money.（在从句中有成分作宾语） 疑问副词：where ,when,why,,how在从句中有成分 Why he didn’t attend class is not know yet. That：引导名词性从句时无成分，无词义，有时可以省略。 Whether /if引导名词性从句时无成分，是否。 特殊疑问代词：主，宾，表，定。 疑问副词：状。 考点三：no matter+疑问词（what）VS疑问词（what）+ever Whatever he says must be put down . No matter what he says/Whatever he says,I will not change my mind. 意思相同，但语法不一样。第一句主从，第二句让步状语从句。以ever开头的引导主从或者状语从句，而以no matter 开头的不能引导名词性从句，只能引导状语从句，所以选ever 就一定对。 考点四：建议、命令、要求类+宾从 The doctor suggested that an operation (should)be done immediately on the patient. 初中讲过当主句是一般过去时态的宾语从句：主过去，从句也过去。当主句的动词是建议、命令、要求类的动词时，后面的宾从必须是should+动词原形且should可以省略。此时不管。主语是谁，不管主句是什么时态都不能改变动词是原形的要求.once表示建议、命令、要求类的动词suggest,advise,propose,demand,require,insist,request,ask,command,order后面如果后
高考总复习：主语从句及宾语从句 真题再现 1. The limits of a person’s intelligence, generally speaking, are fixed at birth, but _______he reaches these limits will depend on his environment. A. where B. whether C. that D. why 2. It is by no means clear the president can do to end the strike. A. how B. which C. that D. what 3. Jerry did not regret giving the comment but felt ______ he could have expressed it differently. A. why B. how C. that D. whether 4. We promise _____ attends the party a chance to have a photo taken with the movie star. A. who B. whom C. whoever D. whomever 5. It doesn’t matter _____ you pay by cash or credit card in this store. A. how B. whether C. what D. why 6. Everyone in the village is very friendly. It doesn’t matter ____ you have lived there for a short or a long time. A. why B. how C. whether D. when 7. It suddenly occurred to him ___ he had left his keys in the office. A. whether B. where C. which D. that 8. The newcomer went to the library the other day and searched for _____ he could find about Mark Twain. A. wherever B. however C. whatever D. whichever 9. As many as five courses are provided, and you are free to choose _____ suits you best. A. whatever B. whichever C. whenever D. wherever 1. B。首先把插入语generally speaking删掉。but后的并列分句中，whether he reaches these limits（作为句子主语）will depend on his environment. 2. D。此处it是形式主语，what引导的是主语从句，作真正的主语，what作do的宾语。句意：总统采取什么行动结束这次罢工一点也不清楚。 3. C。宾语从句不缺少成分用that引导。 4. C。首先本句考查的关键短语是promise sb. sth.（向某人承诺某事），本句指的是向参加聚会的人提供一个和电影明星合影的机会，不定式做chance的定语，然后就是参加聚会的任何人（whoever=anyone who）。 5. B。此处it是形式主语，后面whether...or…引导的主语从句是真正的主语，whether...or…意为：是…还是…都行。句意：在这个商店中用现金或信用卡支付都可以。 6. C。根据空后的or可知为“whether … or”短语。
高考英语主语从句 定义：用作主语的从句叫主语从句，它是名词性从句之一。主语从句的时态：不受主句的时态影响和限制。引导主语从句的连接词有： 从属连词: that, whether； 连接代词: who (whoever), whom, whose, what (whatever)和which (whichever)； 连接副词: when, where, how和why。 连接词： 1. 从属连词：that，whether 1）that引导主语从句只起引导作用，在主语从句中不充当任何成分，that本身无实际意义，但不能省略。2）whether意为“是否”，放在句首句末皆可。由whether引导的名词从句做主语，表语，介词宾语，同位语时！不可用if代替。 a.That price will go up is certain. b. Whether they would support us was a problem. 他们是否会支持我们还是一个问题。 2. 连接代词who ，what ，which, whatever, whichever, whoever (Who, whom, which, what可以和ever构成合成词，和what一样引导从句，ever起到强调作用。此类主语从句不能用形式主语it引导，它们在句子中担任成分，不能省略，语序为陈述语序，既有疑问含义,又起连接作用,同时在从句中充当各种成分。 Which side will win is not clear. Whoever breaks the law will be punished. Whatever he did is right. Who killed the scientist remains a question. 1）What和that引导的主语从句的区别：that 只起引导作用，不充当任何成分，没有意思。What 不仅起引导作用，还要充当一定成分(主语、宾语或表语)，意思是：“什么”。 What we need is money. That he will come is certain. 2）whatever / whoever的用法（~ever=no matter ~---让步状语从句中） whatever / whoever可以引导主语从句,并在句中作主语、宾语、表语等,不含疑问意义。whatever相当于anything that; whoever 相当于anyone who。例如: Whoever(Anyone who) wants to enter into this school must take the exam. Whatever(Anything that) she did was right. 3. 连接副词when，where，how，why等。既有疑问含义,又起连接作用,同时在从句中充当各种成分。How this happened is not clear to anyone. When he will be back depends on the weather. When we’ll start tomorrow will be told soon. Where the test will be given is not yet decided. 4. 主语从句后置：为了避免主语冗长,句子头重脚轻,经常用it 作形式主语,主语从句放在后面作真正的主语. 例: That we shall be late is certain. -- It’s certain that we shall be late. 1）用it 作形式主语的结构 A. It + be + 形容词+ that 从句 (obvious, true, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.) 如：It is certain that she will do well in her exam. B. It + be + 名词词组+ that 从句(an honour, a fact, a pity, etc）如： It is a pity/shame that... 遗憾的是…… It is a surprise that…令人惊奇的是… It is a fact that… …是事实It is common knowledge that… …是常识 It’s a pity that we can’t go. C. It + be + 过去分词+ that 从句(said, reported, thought, expected, decided, announced, etc。）如：It is said that Mr. Green has arrived in Beijing. D. It + 不及物动词或短语+ that 从句( seem，happen, doesn’t matter ,turn out）。如： It happened that I was out that day. It doesn’t matter whether she will come or not. 2) 对于以连接代词(副词)引导的主语从句,可以使用形式主语代主语从句,也可直接在句首使用主语从
It + be + adj.+ that... 主语从句中常见的一种形式，即以引导词that引出的主语从句，常以形式主语it 代替。主语从句的时态不受主句的时态影响和限制，根据句子意思用适当的时态。结构：It is+adj.+that从句。常用于这个句型的形容词有：necessary, important, clear, strange, true, good, wonderful, possible, unusual, certain, surprising; interesting等。 根据汉语意思完成句子。 1．他可能已经把一切都告诉她了。 ____ is possible that he ____ ____ her everything. 2．海怪突然出现了很奇怪。 It ____ _____ that sea monsters suddenly ___________. 3．毫无疑问她将会在测验中做得很好。 It is certain _____ she ____ ____ well in her exam. 用适当的形容词填空 1. Miss Li often says that it is ________ to learn a foreign language well. 2. Look at the black clouds in the sky. It is ________ to rain soon. 3. It is ________ that Sunday is the first day of the week. 4. Isn’t it ________ that chickens can swim? 5. Is it ________ the lazy boy can catch up with all his classmates? 很多形容词可以与介词连用。我们已学过很多这样的搭配，现在一起来复习一下。形容词与某个特定的介词连用，表示某个特定的意思。 ①与about连接的形容词：be worried about“担心……”；be excited about“对……感到兴奋”；be careful about“小心、谨慎”；be mad about“狂热地迷恋”；be anxious about “为……感到焦虑”；feel nervous about/ at“对……感到心神不安”。 ②与at连接的形容词：be shocked at“对……感到震惊”；be good at“擅长……”；be bad at“在某方面不好或坏”；be angry at/ about sth“对……生气”；be mad at sb“对……发怒”；be surprised at“对……感到惊讶”。 ③与as连接的形容词：be famous/ known as“作为……而著名”；be known as “被叫作……”。 ④与for 连接的形容词：be good for“对……有好处”；be bad for“对……有害”；be afraid for“为……而担心”；be famous / known for sth“因……而著名”；be mad for “渴望”；be happy for“为……感到高兴”；be responsible for“负责，有责任”；be free for“对……免费”；be available for“有空的”；be thankful for“感谢，感激……”；be ready for“为……做准备”。 ⑤与from 连接的形容词：be different from“与……不同”。 ⑥与of 连接的形容词：be short of“缺乏……”；be afraid of“害怕……”；be unaware of “没意识到……，不知道……”；be tired of“厌倦，厌烦……”；be proud of“为……感到自豪”；be full of“充满……的”。 ⑦与on 连接的形容词：be based on“基于，根据”；be keen on“喜爱”；be dependent on “依靠”。
主语从句详解 一、概述 在句子中起名词作用的各种从句统称为名词性从句.根据它们在句中的语法作用, 这类从句又可分为主语从句、同位语从句、表语从句和宾语从句. 二、主语从句主要有四类 （1）由连词that引导的主语从句:引导词that无含义/在句中不做成分/不可以省. 例如：That you will win the medal seems unlikely. That you are so indifferent bothers me. That she survived the accident is a miracle. （2）用连词whether 引导的主语从句: whether有含义(是否)/在句中不做成分/不可以省. 注意：引导主语从句, 不能用if, 只能用whether. 例如：Whether we will hold a party in the open air tomorrow depends on the weather. Whether she is coming or not doesn’t matt er too much. （3）用连接代词引导的主语从句 在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中, 其连接代词在句中起名词性作用, 担当一定成分. 例如：What you need is more practice. What I want to know is this. Whatever we do is to serve the people. 注：whatever / whoever的功用 whatever, whoever在主语从句中不含疑问意义.它引导主语从句, 并在从句中作主语、宾语、表语等. whatever = anything that; whoever = anyone who.要注意和whatever, whoever引导的让步状语从句的区别. Whoever breaks the law should be punished. （主语从句） （＝Anyone who breaks the law should be punished. ） Whoever breaks the law, he should be punished. （让步状语从句） （＝No matter who breaks the law, he should be punished. ） （4）用连接副词when, where, why, how引导名词性从句(其连接副词有含义,在句中作状语.) 例如:Where we should leave it is a problem. When they will come hasn’t been made pubic. 三、注意点: it构成的主语从句 （1）由连词that引导的主语从句, 在多数情况下放到句子的后面, 而用代词it作形式主语. 例如：That light travels in straight lines is known to all. =It is known to all that light travels in straight lines.
表语从句与主语从句 表语从句和主语从句以及宾语从句都要用陈述语序。 Ⅰ.表语从句 在复合句中，位于系动词之后作表语的从句称为表语从句。它位于主句的系动词之后， 最为重要的是我们应该为牛找到足够的水。 The doubt is who has taken away the valuable vase. （主语，人） 疑点是谁拿走了那只贵重的花瓶。 My topic today is what most scientists are researching.（宾语，物，没有选择范围） 我今天的话题就是大多数科学家正在研究的课题。 The problem is which school will be chosen.(which在从句中作定语) 问题是哪一所学校将被选中。 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。 表语从句中应注意的问题 (1)because，why引导的表语从句。 because引导表语从句时，表示“因为”，why引导表语从句时，表示“……的原因”，相当于the reason why。 That’s because he didn’t understand me. (That’s because...强调原因) 那是因为他不理解我。 That’s why he got angry with me. (That’s why...强调结果) 那正是他对我生气的原因。 (2)what引导的主语从句表示结果或名词reason作主语时，后面的表语从句表示原因时要用that引导，不宜用because。 What cost him his life was that he was too careless. 使他丧命的原因是他太粗心了。 The reason why I was sad/for my being sad was that he didn’t understand me. 我难过的原因是他不理解我。 (3)使用虚拟语气的表语从句 在表示建议、劝告、命令含义的名词后的表语从句中，谓语动词需用“should＋动词原形”表示，should可省略。常见的词有：advice，suggestion，order，proposal，plan，idea，request，requirement等。 My suggestion is that we (should) have a discussion about this matter instead of just laying it aside. 我的建议是我们应当讨论一下这个问题，而不应该把它放在一边。 （4）as if/as though引导的表语从句常置于系动词look，seem，sound，be，become等后面，常用虚拟语气，即形式常用过去式的某种时态。