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
句：
a. Whether they would support us was a problem.
b. It was a problem whether they would support us.
3）主语从句中的否定前移
当用it作形式主语,而将主语从句放在句尾时,主语从句中的否定词常要前移至主句中。例如: It doesn’t seem that they are from the same university.
It doesn’t appear that we’ll have a sunny day tomorrow.
5. 注意：
1）主语从句在句首时，必须由连接词引导，不能省略这些连接词。
误：They should like each other is natural. 正：That they should like each other is natural.
2）在It + be + suggested/advised/ordered/requested/ insisted/required 中, that从句的谓语也应该用“should + 动词原形”的形式, should有时可以省略。主语从句中用陈述语序,后面的谓语动词用第三人称单数. It is suggested that we (should) do the experiment a second time.
3) . 用于It is important / natural / necessary / impossible that...句型中, 主语从句应使用虚拟语气, 用“should + 动词原形”的形式, should有时可以省略。
It is important and necessary that we (should) keep the balance of nature.
4）“what”引导主语从句时，谓语动词：常与其后的名词作表语一致，且根据句子的语境而定。
eg：What you left are only several old books. What you said is of great importance.
5）在It is funny, strange, surprising, a pity, a shame, no wonder, etc. + that从句中，有时谓语部分用should + 动词原形，来表达说话者的感情色彩，此时should也可省略。
6）语气
"It be + adj./n. + that-clause"与强调句型均有It be...that...之类的语言标志,但不同的是:①前者中的that从句是主语从句.若删掉其中的It be和that,则剩余部分不论结构还是语意都不能成为一个句子;但若将后者中的It be和that去掉,则剩余部分的结构和语意仍能构成一个完整的句子.②强调句型译为汉语时可加上"正是……"或"就是……"之类的字眼,而主语从句则不可以.
It is surprising that Mary should have won first place.令人惊奇的是玛莉竟然获得了第一名.
It is Mary that has won first place.正是玛莉得了第一名.【强调】
6..主语从句的规律：
例1.When will he come is not known. 正：When he will come is not known.
规律一、主语从句一律用陈述语序，即主语在前，谓语在后。
例2. He will not come to the meeting this evening is true.
正：That he will not come to the meeting this evening is true.
规律二、连词that 在从句中无实际意义，但不能省略。
例3. If the meeting will be put off has not been decided yet.
正：Whether the meeting will be put off has not been decided yet.
规律三、whether 可以引导主语从句，放在句首，但if不能
例4. That whether he will help others is a fact.
正：That he will help others is a fact.
规律四、主语从句中的连词不能重叠使用。
例5. When he will come are a puzzle. 正：When he will come is a puzzle.
规律五、含主语从句的主句谓语动词多用单数第三人称形式。
1. What he needs is that book.
2. What he needs are some books.
规律六、what 引导的主语从句，可根据表语决定主句动词的单复数形式。
规律七、主语从句为了避免头重脚轻现象，用it 做形式主语，而把从句放在后面。
That the earth turns around the sun is known to all.
It is known to all that the earth turns around the sun.
1.what / that a.____ he said at the meeting surprised us. b._____ he turned up at the meeting surprised us.
2. if / whether _______you go or stay at home won’t make any differences.
3.What a pity _____is _____you didn’t arrive by daylight.
A. there, because
B. it, that
C. he, when
D. that, for
4.no matter how/who/what/where/when
We are ready to do ______ the country wants us to do.
A. what
B. which
C. no matter what
D. whatever
5.It is a pity that you (should) miss such a good chance.
___ he made an important speech at the meeting was true.
A. That
B. Why
C. What
D. How
6. ___we’ll go camping tomorrow depends on the weather .
A If
B Whether
C That
D Where
7.___ is known to us all is that America is a developed country .
A Which
B As
C What
D It
8. It’s known to us all ___ a form of energy .
A. water is
B. that water is
C. is water
D. that water to
9. It worried her a bit ___ her hair was turning gray.
A. whether
B. that
C. what
D. when
10.What I say and think ___ none of your business.
A. is
B. are
C. has D have
11. ____ his dream of going to college will come true is uncertain.
That B. Whether C. If D. Even if
12. It is known to us ___ where there is pollution, there is harm.
A. which
B. where
C. what
D. that
13. --- I saw your neighbor break your window with a basketball.
--- ____ it made me nearly mad.
A. That he broke
B. What he broke
C. He broke
D. His break
14.It remains a question ____ we can get so much money in such a short time.
A.how
B. that
C. when
D. what
15. He made a promise ___ anyone set him free he would make him very rich.
A. that
B. if
C. what
D. that if
16. They lost their way in the forest and ____ made matters worse was ___ night began to fall.
A. what; that
B. it; that
C. what; when
D. which; what
17. ________that they found an unusual plant in the forest.
A. It is said
B. They are said
C. It said
D. It says
18. _____ caused the accident is still a complete mystery.
A. What
B. That
C. How
D. Where
19. It worried Mary a lot _____ she would pass the college entrance examination.
A. whether
B. if
C. that
D. how
20. ____ is no possibility ______ Bob will win the first prize in the match.
A. There, that
B. It, that
C. There, whether
D. It, whether
21. ____surprised me most was _____such a little girl of seven could play the violin so well.
A. That; what
B. What; that
C. That; that
D. What; what
22. _____ helped to save the drowning girl is worth praising.
A. Who
B. Anyone
C. Whoever
D. The person
23. ____ she couldn’t understand was _____ fewer and fewer students showed interest in her lessons.
A. What; why
B. That; why
C. What; because
D. Why; that
24. It was ____ he said ___ disappointed me.
A. What; that
B. That; that
C. What; what
D. That;what
25. ___ is a fact that English is being accepted as an international language.
A. There
B. This
C. That
D. It
26. ______leaves the room last ought to turn off the lights.
A. Anyone
B. The person
C. Whoever
D. Who
27.________ makes mistakes must correct them. A. What B. That C. Whoever D. Whatever
28. Is this factory you visited the other day?
A. that
B. where
C. in which
D. the one
29.When and why he came here ________ yet.
A. is not known
B. are not known
C. has not known
D. have not known
30. ________ is no reason for dismissing her.
A. Because she was a few minutes late
B. Owing to a few minutes late
C. The fact that she was a few minutes late
D. Being a few minutes late
31. ________ Tom liked to eat was different from ________.
A. That…that you had expected
B. What …that you had expected
C. That…what you had expected
D. What…what you had expected
32.________ we go swimming every day ________ us a lot of good.
A. If...do
B. That...do
C. If...does
D. That...does
33.It ________ Bob drives badly.
A. thinks that
B. is thought what
C. thought that
D. is thought that
34.It's uncertain ________ the experiment is worth doing.
A. if
B. that
C. whether
D. how
35.________ the boy didn't take medicine made his mother angry.
A. That
B. What
C. How
D. Which
36.____ we can't get seems better than ____ we have.
A. What, what
B. What, that
C. That, that
D. That, what
37.____ you don't like him is none of my business.
A. What
B. Who
C. That
D. Whether
38..____ we'll go camping tomorrow depends on the weather.
A. If
B. Whether
C. That
D. Where
39._________is going to do the job will be decided by the Party committee.
A. That
B. Why
C. How
D. Who
40._______we'll finish translating the book depends on the time.A. When B. Why C. What D. That
41.______he won't go there is clear to all of us.A. How B. What C. Why D. This
42.______the house will be built will be discussed at tomorrow's meeting.
A. If
B. Where
C. That
D. What
43_______you come or not is up to you. A. What B. If C. Why D. Whether
44._______team will win the match is a matter of public concern.
A. Which
B. That
C. If
D. How
45 Is this the factory ___ some foreign friends visited other day?
A that
B where
C which
D the one
1. what / that
2. Whether 3--10 BDA BCBBA 11--20 BDAAD AAAAA 21--30 BCAAD CCACC 31--40 DDDCA ACBDA 41--46 CBDAAB
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
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.
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. 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. GRAMMAR 主语从句学习指导 [寻规找矩] 请观察下列句子，注意主语从句的用法。 1. That the earth travels round the sun is a well-known fact. 2. It is uncertain whether the artist can do it or not. 3. Who will act the lead in the play has not been decided yet. 4. Where the young man has gone is not known. 5. It is not yet decided when and where the test will be given. [常见错误展示] 下列各句均有一处错误，请改正并分析错误的原因。 1. Light travels faster than sound is common knowledge. 2. If she’s coming or not doesn’t matter much.
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 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 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……
微练习 一、用适当的连接词完成句子。 1．has helped to save the drowning girl is worth praising. 2．It is important he should know about this. 3．they would support us was a problem. 4．Mike didn’t turn up at the meeting yesterday is unknown. 5．It is reported China has sent another manmade satellite. 6．he is still alive is a wonder. 7．type of computer he will buy needs discussing. 8．the book will sell depends on its author. And I think it’ll sell well. 9．It is still a mystery caused the accident. 10. I told you is true. 二、单项填空 1. It is under discussion the old bus station should be replaced with a modern hotel or not. A. whether B. when C. which D. where 2. one of you breaks the window will have to pay for it. A. whoever B. whatever C. whichever D. wherever 3. It remains to be seen the newly formed committee’s policy can be put into practice. A. that B. which C. what D. whether 4. those clouds threw shadows that some sunlight. A. blocked out B. took in C. put off D. gave away 5. we’ll go climbing tomorrow depends on the weather. A. If B. Whether C. That D. Where 6. all the inventions have in common is they have succeeded. A. What; what B. That; that C. What; that D. That; what 7. still needs to be discussed. A. How is the plan to be carried out B. How the plan is to be carried out C. Why is the plan carried out D. Why the plan carried out 8. that she has received a doctor’s degree. A. It’s a splendid news B. This is a splendid news C. It’s splendid news D. This is splendid news. 9. the delayed flight will take off depends much on the weather. A. Why B. When C. That D. What 10. I think impresses me about painting is the colors he uses. A. what B. that C. which D. who 三、完成句子，词数不限 1. （不管谁去接他）must have a driver’s licence. 2. （哪个班级会赢得这场足球赛）is still a mytery. 3. （他能否买到票）doesn’t matter much. 4. （我们要去哪里）is a question. 5. （你刚才告诉我的）was really a surprise.
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 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.
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
主语从句 （一）主语从句的标记 主语从句通常由连词that和whether (if)、连接代词或连接副词以及关系代词型what引导。 1. that引导 That he is still alive is a wonder. 他还活着，真是奇迹。 That we shall be late is certain. 我们要晚了，这是确定无疑的。 That he should have ignored the working class was natural. 他忽视工人阶级是很自然的。 That she is still alive is a consolation. 她还活着是使人感到宽慰的。That she became an artist may have been due to her father’s influence. 她成为画家可能是受她父亲的影响。 That you are coming to London is the best news I have heard this long time. 你将来伦敦是好久以来我听到的最好消息。 That she was chosen made a tremendous stir in her village. 她被挑选上，在她村子里引起很大轰动。 2. whether引导 Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。 Whether they would support us was a problem. 他们是否会支持我们还是一个问题。 3. 连接代词引导 Whoever(=anyone who) fails to see this will make a big blunder. Whatever(=anything that) she did was reasonable. 无论什么 Anything that she did was reasonable. Whichever (of you) comes in first will receive a prize. 无论(你们)谁先到都可以得奖。 Whichever(=anything that) you want is yours. 你要哪个哪个就是你的。What do you need?
名词性从句之主语从句 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.