名词性从句---------主语从句
一、名词性从句概述：
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、主语从句定义：
在句中起主语作用的从句称为主语从句。
引导主语从句的连接词主要有：单纯连词（that, whether/ if）、连接代词(what, whatever, who, whoever, whom, whose, which, whichever等)和连接副词(when, where, why, how, whenever, wherever, however等)。
1)that引导的主语从句
（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.你能得奖看起来不大可能。
That light travels in straight lines is known to all. 众所周知，光沿直线传播。
That you don’t like him is none of my business.你不喜欢他不管我的事。（2）形式主语it替代主语从句位于句首，that引导真正的主语从句会放到句子的后面。常用的句式主要有如下几种：
1.It+ 系动词+形容词+that从句。
如：
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; worth-while; surprising; interesting; astonishing, etc.
例如：It was really astonishing that he refused to talk to you.
It is essential that he should be here by the weekend.
It seems obvious that we can not go on like this.
It is necessary that you （should）master the computer.
It is important that a student learn English well.
It’s clear that they badly need help.
It is likely that a hurricane will arrive soon.
知识拓展：在“
It is necessary / important/surprising/strange/unthinkable/unbelievable/incredible+that 从句”这类主语从句结构中，从句中谓语动词常用“（should）＋动词原形”，形式，即要用虚拟语气,should 可省略。
例如：
It is necessary that a college student (should ) master one or two foreign languages.
大学生掌握一两门外语是有必要的。
It is strange that you (should) trust Jane.
很奇怪你竟然相信简。
另外，需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。试比较：
It was reported that the US was under the terrorist attack.
As was reported, the US was under the terrorist attack.
（2）常见用it作形式主语的复合句结构
2. It +系动词+名词+ that从句
如：
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 all happened.
It is common knowledge that the whale is not a fish.
It is no surprise that Bob should have won the game.
It’s a pity that you missed the film.
3. It +be +动词的过去分词+that从句
如:
It is said that …据说……
It is reported that …据报道……
It has been proved that …已证明……
It must be proved that…必须指出……
类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.
例如：It is thought that he is the best player.
It is estimated that the vase is 2000 years old.
It has not been made clear when the new road is to be opened to traffic.
It is said that he was killed in the earthquake.
4. It+特殊词+that从句。
如：It seems （happened / appears / doesn’t matter / makes no difference / occurred …）that …
如：
It seems that they will win the game.
It makes no difference whether he will attend the meeting or not.
It does not matter if I missed my train.
It happened that I saw him yesterday.
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 you like him or not is none of my business.
Whether we will hold a party in the open air tomorrow depends on the weather. Whether she is coming or not doesn’t matter 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。
如：
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）用连接副词引导的主语从句
用连接副词when, where, why, how, whenever, wherever, however等引导的主语从句从句(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.
温馨提示：如果主语从句是由连接代词what, whatever, whoever等引导的，表示的是一个具体的东西或人时，这样的主语从句不能用it作形式主语。
What is worth doing is worth doing well.
Whatever was said here has left us much too think.
Whoever comes will be welcome.
1）随堂练习
1. It doesn’t matter _________ you turn right or left at the crossing---both roads lead to the park.
A. whether
B. how
C. if
D. when
2. It suddenly occurred to him ________ he had left his keys in the office.
A. whether
B. where
C. which
D. that
3. ---- We’ve only got this small bookcase. Will that do?
---- No, _________ I am looking for is something much bigger and stronger.
A. who
B. that
C. what
D. which
4. It doesn’t matter ________ you pay by cash or credit card in this store.
A. how
B. whether
C. what
D. why
5. ________ the polluting factory will be removed from the city is, in fact, ________ the citizens are glad to see.
A. That; as
B. As; what
C. That; what
D. What; that
6. I don’t say I am against Jackie’s plan. But the problem is ___________he does from the serious disease soon.
A. what that
B. that what
C. whether what
D. what whether
7. “When ________ leave for Japan?”“When _______ leave for Japan is kept secret.”
A. they will; will they
B. will they; they will
C. they will; they will
D. will they; will they
8. They lost their way in the forest, and _________ made matters worse was that night began to fall.
A. it
B. which
C. that
D. what
9. It has come to my notice ________ some of you have missed to do anything well.
A. what
B. which
C. that
D. when
10. _______ we are doing has never been done before.
A. That
B. What
C. Which
D. Whether
2）家庭作业：
1. _____ as much as one-fifth of all timber harvested is not used.
A. The estimate
B. The estimated
C. They are estimated
D. It is estimated that
2. _____ some mammals came to live in the sea is not known.
A. Which
B. Since
C. Although
D. How
3. _____ we have achieved is attributed to the guidance of our parents.
A. Whoever
B. Whatever
C. However
D. That
4. _____ wealthy does not necessarily mean that a man is greedy.
A. For the reason that he is
B. Just because he is
C. The reason of being
D. That he is
5. Although ___ happened in this developed country sounds like science fiction, it c ould 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. She occurred that
C. To her that occurred
D. It occurred to her that
7. I am sure that _____ she said is wrong.
A. which
B. all
C. this
D. what
8. We lost our way in the forest, and ____ made matters worse was that it was getting dark.
A. that
B. which
C. it
D. what
9. _____ or not is still uncertain.
A. He’s coming
B. If he is coming
C. That coming
D. Whether he’s coming
10. It’s _____ he’ll be able to come.
A. doubt whether
B. doubtful
C. doubt it
D. doubtful whether
11. ______ he is at work in the heart of the big city or at home in the quiet suburb, Di ck’s life is tied to machines.
A. Whether
B. Till
C. If
D. Unless
12. _____ he saw both surprised and frightened him.
A. That
B. When
C. What
D. Which
13. _____ is warm sunshine.
A. What do we all need.
B. What all we need
C. What we need
D. What we all need
14. _____ is a pity that he should feel so upset.
A. What
B. That
C. He
D. It
15. _____ a spoonful of soil can tell us so much about the structure and early history o
f the moon.
A. Remarkable
B. Quite remarkably
C. It is remarkable that
D. It is remarkable fact that
16. _____ you nominate will be elected.
A. Who
B. Whom
C. Whomever
D. That’s
17. _____ book you borrow must be returned within a week.
A. What
B. Which
C. Whichever
D. That’s
18. _____ of us gets home first starts cooking.
A. Who
B. Which
C. Whichever
D. Anyone
19. It’s known to us all ___ a form of energy .
A. water is
B. that water is
C. is water
D. that water to
20. It worried her a bit ___ her hair was turning gray.
A. whether
B. that
C. what
D. when
21.What I say and think ___ none of your business.
A. is
B. are
C. has D have
22.___ is known to us all that America is a developed country .
A Which
B As
C What
D It
23. ___we’ll go camping tomorrow depends on the weather .
A If
B Whether
C That
D Where
24.___ he made an important speech at the meeting was true.
A. That
B. Why
C. What
D. How
定语从句和主语从句练习（二） 1.The old town has narrow streets and small houses ______ are built close to each other. A they B where C what D that 2.Between the two parts of the concert is an interval, ______ the audience can buy ice-cream. A when B where C that D which 3.Whatever is left over may be put into the refrigerator, _____it will keep for two or three weeks. A when B which C where D while 4.Julie was good at German, French and Russian, all of _____ she spoke fluently. A who B whom C which D that 5.I walked up to the top of the hill with my friends, _____ we enjoyed a splendid view of the lake. A which B where C who D that 6.She showed the visitors around the museum, the construction _____ had taken more than three years. A for which B with which C of which D to which 7.The prize will go to the writer _____ story shows the most imagination. A that B which C whose D what 8.Ted came for the weekend wearing only some shorts ans a T-shirt, _____ is a stupid thing to do in such weather. A this B that C what D which 9.As a child, Jack studied in a village school, _____ is named after his grandfather. A which B where C what D that 10.I refuse to accept the blame for something ______ was someone else’s fault. A who B that C as D what 11.Wind power is an ancient source of energy _____ we may return in the near future. A on which B by which C to which D from which 12.After graduating from college, I took some time off to go travelling,______ turned outto be a wise decision. A that B which C when D where 13.The house I grew up _____ has been taken down and replaced by an office building. A in it B in C in that D in which 14.Occasions are quite rare ______ I have the time to spend a day with my kids. A who B which C why D when 15.We went through a period _______communications were very difficult in the rural areas. A which B whose C in which D with which 16.The book was written in 1946, ______ the education system has witnessed great changes. A when B during which C since then D since when 17.Those successful deaf dancers think that dancing is an activity ____ sight matters more than hearing. A when B whose C which D where 18.Chan’s restaurant on Baker Street, ______ used to be poorly run, is now a successful business. A that B which C who D where
主语从句、表语从句巩固训练题(附参考答案) 1. It has been proved _________ eating vegetables in childhood helps to protect you against serious illnesses in later life. A. if B. because C. when D. that 2. The last time we had great fun was ________ we were visiting the Water Park. A. where B. how C. when D. why 3. ________ matters most in learning English is enough practice. A. What B. Why C. Where D. Which 4. The traditional view is ______ we sleep because our brain is “programmed” to make use do so. A. when B. why C. whether D. that 5. ______ parents say and do has a life-long effect on their children. A. That B. Which C. What D. As 6.________ is our belief that improvements in health care will lead to a stronger, more prosperous economy. A. As B. That C. This D. It 7. ______ team wins on Saturday will go through to the national championships. A. No matter what B. No matter which C. Whatever D. Whichever 8. You are saying that everyone should be equal, and this is ______ I
1. _____ as much as one-fifth of all timber harvested is not used. A. The estimate B. The estimate C. They are estimated D. It is estimated that 2. _____ was once regarded as impossible has now become a reality. A. That B. Which C. Who D. What 3. _____ we have achieved is attributed to the guidance of our parents. A. Whoever B. Whatever C. However D. That 4. _____ you say now can’t make up for what you’ve done. A. No matter 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. She occurred that C. To her that occurred D. It occurred to her that 7. I am sure that _____ she said is wrong. A. which B. all C. this D. what 8. We lost our way in the forest, and _____ made matters worse was that it was getting dark. A. that B. which C. it D. what 9. _____ occurred to him that he had forgotten to lock the door when he left home. A. This B. It C. That D. These 10. _____ or not is still uncertain. A. He’s coming B. If he is coming C. That coming D. Whether he’s coming 11. It’s _____ he’ll be able to come. A. doubt whether B. doubtful C. doubt it D. doubtful whether 12. It is _____ that the bridge has existed for more than three centuries . A. appeared B. risen C. said D. born 13. _____ he saw both surprised and frightened him. A. That B. When C. What D. Which 14. _____ is a spell of warm sunshine. A. What do we all need. B. What all we need C. What we need D. What we all need 15. _____ is a pity that he failed in the race. A. What B. That C. He D. It 16. _____ a spoonful of soil can tell us so much about the structure and early history of the moon. A. Remarkable B. Quite remarkably C. It is remarkable that D. It is remarkable 17. _____ you nominate will be elected. A. Who B. Which C. Whomever D. That’s 18. _____ book you borrow must be returned within a week.
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。
主语从句练习题 一．翻译 1．(谁将去接他)_______________________________________________ is not decided. 2．(哪个班极会赢得这场足球赛)__________________________________ is not clear . 3．(他能否买到飞机票)______________________________________ doesn’t matter much. 4．(我们如何去那里)__________________________________________ is a question. 5．(你刚才告诉我的)_______________________________________ was really a surprise. 6．(他什么时候出国)_______________________________________ is being discussed 7．(他为什么哭)___________________________________________ is not clear. 8．It is clear______________________________________________(他是一个乞丐). 9．(你要请谁)______________________________________________ is not important. 10．(我们将在哪里举行篮球赛)____________________________________ is not clear. 二．找出下列句子中的主语从句及其引导词，并且指出引导词是否充当成分，充当什么成分。 1. That we shall be late is certain. 2. That the driver could not control his car was obvious. 3. It is certain that we shall be late. 4. It was obvious that the driver could not control his car. 5. Is it possible that they will come tomorrow？ 6. It is clear that he was telling the truth. 7. It’s probable that we’ll be a little late. 8. What caused the accident is a complete mystery. 9. It worried her a bit that her hair was turning grey. 10. It shocked me that Peter didn’t tell anybody where he was. 11. Who was responsible for the accident is not yet clear. 12. It’s a pity that you can’t go with us. 13. What he did is not yet known. 14. It is said that he has been there many times. 15. It is not yet clear who was responsible for the accident. 16. When they will have the sports meet is still a question. 17. It seems that he has lost something. 18. What he said at the meeting encouraged everyone. 19. What caused the accident was a broken bottle. 20. It remains a problem whether it is true. 21. Whoever breaks the law is sure to be punished. 22. What she looks like doesn’t matter.
主语从句 一、主语从句的连词分三类 （1）从属连词引导的主语从句（that whether if） 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。That 引导主语从句通常用it 作形式主语。 That she survived the accident is a miracle. 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不能在开头，只能用whether。 Whether she is coming or not doesn’t matter too much. （2）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Whatever we do is to serve the people. 注：whatever / whoever的功用 whatever = anything that; whoever = anyone who。要注意和whatever, whoever 引导的让步状语从句的区别。 如：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. ） （3）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 it is a problem.
主语从句练习题 [即学即用] 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.
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.
主语从句 一、概念：在复合句中起主语作用得从句叫主语从句。 （一）连接词 从属连词：that、whether； 关系代词：who, what, which , whom, whose, whatever, whoever, whomever, whichever； 关系副词：when, where, how, why, however, whenever, wherever等； 例：What he said is true、 That you don’t like him is none of my business、 Whether the football game will be played depends on the weather、 主语从句得时态：不受主句得时态影响与限制。 （1）______ he finished writing the composition in such a short time ______(惊讶) us all、（2）______we will go for an outing tomorrow ______（remains，remained）unknown、（3）______ will be our monitor ______(be) decided yet、 （4）______we must study for ______ (be) a question of great importance、 （5）______ caused the accident ______（remains，remained）unknown、 （6）______ you did ______ (be)right、 （7）______ watch ______(be) lost is unknown、 （8）______we need ______(be) time、 （9）______ we need ______(be) good doctors、 小结: （1)主语从句得时态：不受主句得时态影响与限制。 （2)连词位于句首不能省略（3)主语从句大多数情况下视为三单,但也有例外,如例9 1、从属连词that，whether引导得主语从句。 从属连词that，whether在主语从句中得作用只就是引导主语从句，在从句中不担任成分，不能省略。 例：__________ they will go is certain、 __________ she will come or not is still a question、 __________ she's coming or not doesn't matter too much、 2、it作形式主语引导主语从句。 如果主语从句太长，为避免句子结构头重脚轻，我们可用it作形式主语，而把主语从句放在主句谓语部分之后。That引导得主语从句可用it代替，that 不可省略。 用作it作形式主语得结构： （1）It is/was +形容词+that 从句 It’s natural that…很自然……It’s obvious that …显而易见…… It’s fortunate that …幸运得就是It’s (im)possible…（不）可能…… It’s unlikely that…不可能It’s strange that…奇怪得就是…… （2）It is/was +名词+that 从句 It’s a pity that…遗憾得就是……It’s a fact that …事实就是…… It’s good news that…就是好消息……It’s a wonder that…不足为奇…… It’s an honour that…非常荣幸……It’s a shame that…真就是可耻…… It’s common knowledge that …就是常识… （3）It +不及物动词+that 从句 It seems that…似乎……It happened that…碰巧…… It appears that…瞧来……It turns out that…结果…… （4）It is/was +过去分词+that 从句 It’s not known that………不得而知It’s said that…据说……
主语从句练习 练习1：划出下面句子的主语 A foreign language is a weapon in the struggle of life. Who is speaking, please? This is Jack speaking. Two will be enough. Smoking is very dangerous. To see is to believe. To do today's homework without the teacher's help is very difficult. “A” is an article. The teacher with two of his students is walking into the classroom. 练习2 what, whether, where, when， who, why, how or that. 1.(_____ is needed for success) is your hard work. 2.(______ they will arrive )has been told to the teacher. 3.(_____ we will go tomorrow )hasn’t been decided yet. 4.(____can join in the sport meet) is decided by the teacher 5.(________ it will rain or not) is not clear. 主语从句作主语时，谓语动词一般用单数形式。 练习3 Wh--ever 1. 你需要的是更多的经验。 ____________________ is more experience. 2. 谁最先到将得到奖品。 _________________________ will receive a prize. 3. 我所有的东西请随便使用。 ___________________ is at your service. 4. 不管他写什么都没关系。 _____________________ doesn’t matter. 5. 这里讨论任何事都应当保密。 ____________________________ must be kept secret. 练习4 Whether与if 1. ________we can solve this problem remains unknown. 2. ________this material can be used in our factory has not been decided yet. 3. ________people who choose red on the test are energetic or not has been
高二年级语法要点剖析（李翌洋） 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： （1）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。 注意：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…
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 matter 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
主语从句专项练习 副标题 一、单句语法填空（本大题共17小题，共17.0分） 1.It doesn't matter ____you help me or not. I will try all the ways to finish the task. 2.____ annoyed me last night was the noise of the firecrackers from the neighbourhood area till midnight. 3.It?s known to all ________ the gun powder was first invented by the Chinese. 4.单句语法填空 （1）This is the first time we __________(see) a film in the cinema together as a family. （2）We were all __________(inspire) when we heard the news that the rescue team found another survivor. （3）Self-driving is an area _________ China and the rest of the world are on the same starting line. （4）________ interested Zhang Pingyu most was the longitude line at Greenwich. （5）You need to make some adjustments ________ the article before it is published. 5.___________ the old bus station should be replaced with a modern hotel is still under discussion. 6.The fact that the mainland of great Britain is made up of 3kingdoms is still unknown to many It______ still______ to many______ the mainland of great Britain is made up of 3kingd oms． 7.__________ we understand things has a lot to do with how we feel. 8.It is three days since they got lost. ______________ they’re safe is still unknown. 9.________surprise d me most was that she didn?t even know________ the difference between the two lies. 10.Generally speaking, ________we have seen seems more believable than ________we have been told. 11.___ (Whoever/NO matter who) breaks the law should be punished. 12.It is doubtful________ the government of that country can accept them as permanent residents. 13.________Barbara Jones offers to her fans is honesty and happiness. 14.________ there is life on another planet is almost impossible. 15.It's often the case ______ anything is possible for those who hang on to hope． 16.___________ they want to get now __________ (be) help.他想得到的是帮助。 17.________ (Whoever, Who) gains the most points wins the competition. 二、单句改错（本大题共10小题，共20.0分） 18.What China got the first place in the 2008 Olympic Gaines made the whole nation very