主语从句用法小结
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主语从句用法小结
勉县第二中学 高二（7）班 郭恬
指导老师：李 艳
请观察下列句子, 注意主语从句的特点。
1. That the earth travels round the sun is a well-known fact.
2. Whether the artist can do it or not is uncertain.
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. When and where the test will be given is not yet decided.
【归纳总结】主语从句必须有引导词；主语从句用陈述句语气。
1. 引导主语从句的词有：
连词: that, whether；
连接代词: who, whose, whom, whoever, what, which等；
连接副词where, when, whenever, wherever, how, why等。
主语从句引导词的选择：
1).连接词: that, whether
(1) That he will win is certain.
(2) It has been reported that sales of beef in China will increase.
(3) Whether we shall raise ducks or geese remains to be decided.
(4) Whether he ’ll join us in the discussion is of great importance.
2) 连接代词: who, whom, whose, what, which, whoever, whatever, whichever
等。
(1) It is clear who is afraid of having a change in land ownership.
(2) Whose bag it is cannot be told.
(3) What India needs is a law to make land ownership fairer.
(4) It is not yet decided which cash crop will be produced next year.
(5) Whatever he said was right.
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(6) Whoever go there must get ready by 6 o’clock.
3) 连接副词: when, where, why, how, how many, how much ,how long, how soon,
how often等。
(1) When we’ll start tomorrow will be told soon.
(2) Where we can buy oxen is something we need to find out.
(3) How/ When he came here is not known.
(4) How we can protect the grain needs to be discussed.
(5) How many people died from starvation that year will never be
known.
(6) How often he’ll go to see his grandmother depends on the time he
can spare.
归纳总结：
主语从句引导词的选择主要是根据从句的结构和意义来选择。
1.如果从句的意义和结构完整，则用that。
2.如果从句的意义和结构不完整，则根据从句的意义和结构选择相应的引导词。
比较that / what
1. What he wants is a book.
2. That he wants to go there is obvious.
3. What happened is not clear.
4. This is the best TV that is made in China. 定语从句
5. The first museum that he visited in China was the History Museum.
定语从句
that 和what 的选用：that 和 what 都可引导主语从句。但是，what除起连
接作用外，还在主语从句中充当成分，可做从句的主语、宾语、或表语。而that
在主语从句中不充当任何成分，只起连接作用。
翻译和分析下列句子：
1. It is well reported that a storm is coming.
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2. It is true that the earth moves around the sun.
3. It is a pity that I missed the train.
4. It doesn’t matter whether he will come or not.
5. It seems that it is going to rain.
6. It happened that they didn’t know my address.
归纳：为了使句子保持平衡，常用it来代替主语从句，而把主语从句放到后面，
尤其是连词that引导的主语从句常用于此种句式中。
常用句型如下：
It+ be +名词+ that 从句
It+ be + 形容词+ that从句
It+ be + 动词的过去分词+ that从句
It+ be + 不及物动词+ that从句
1. It’s likely/possible/important/necessary/clear that…
很可能/重要的是… /必要的是……/很清楚…
2. It’s known/reported/ thought/said that… 据说/据报道…
3. It seems/appears/happens that… 显然、明显、碰巧.…
4. It’s been announced/declared that… 已经通知/宣布…
5. It’s no wonder that…并不奇怪/无疑…
6. It’s a pity/a fact /a common knowledge (众所周知） / a common saying
（俗话说）that…
主语从句常见错误：
下列各句均有一处错误，请改正并分析原因。
1. Light travels faster than sound is common knowledge.
改：在is后加that。that虽无词义但引导主语从句位于句首时不能省略。
2. If she’s coming or not doesn’t matter much.
改：将If变为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。
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3. That the professor said is of great importance.
改：将That改为What。that引导主语从句时无词义，只起一个连接的作用。What
the professor said表示“教授所说的”，said后面还需要一个宾语，就只能
用what。4. Where will the trees be planted has not been decided.
改：将will置于trees之后。主语从句要用陈述句语序。
5. No matter who breaks the rule will be punished.
改：将No matter who变为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. When and where the meeting will be held still remain a question.
改：将remain变为remains。主语从句表示单一概念时，谓语要用单数形式。
主语从句详细讲解及综合练习
主语从句一、概念：在复合句中起主语作用的从句叫主语从句。
（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.主语从句的时态：不受主句的时态影响和限制。
（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)主语从句的时态：不受主句的时态影响和限制。
主语从句定义
主语从句定义：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。
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。
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。
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。
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).What you need is more practice.What I want to know is this.Whatever we do is to serve the people.（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。
)eg:Where we should leave it is a problem.When they will come hasn’t been made pubic.ATTENTION1.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.=It is known to all that light travels in straight lines.When the plane is to take off has not been announced .= It has not been announced when the plane is to take off.(当what引导的主语从句表示“…的东西”时，一般不用it作形式主语。
主语从句语法总结
主语从句语法总结主语从句知识点总结：一，主语从句的定义：在句中充当主语的从句。
二，主语从句的引导词：从属连词：that引导作用，无实际意义，不充当成分，但不能省略whether引导作用，有意义表“是否”，不充当成分，但不能省略连接代词：连接代词连接词WhatWhoWhom/宾whichWhateverWhoeverWhomever/宾whichever词义所....东西谁谁哪个句子中的成分区别主语，宾语，表语，定语含有疑问含义强调统统情况，无疑问含义无论什么无论谁主语，宾语，无论谁表语，定语无论哪个/些连接副词：连接词连接副词WhenWhereWhyhow词义在句中的成分时间状语地点状语缘故原由状语方式状语注意：由that引导的主语从句，有时为了使句子结构平衡，避免“头重脚轻”，常用it作形式主语，而把从句放后面。
例：That students should hard work is necessary.改为it作方式主语：It is necessary that students should hard work.组成一些常用句型：1）It is + n.（名词）+从句It is a pity/shame that...遗憾的是....It is a surprise that...令人惊奇的是...It is common knowledge that...…..是常识例句：It is a pity that(很遗憾)we lost the match.It is a fact that(这是究竟）he cheated in the exam.2) It is + adj.（形容词）+从句It's certain that...肯定...It is unlikely that...不可能....It is obvious that...很明显...It is necessary \important \natural\...that...+(should) +do...例句：It is possible that（很可能）she will come back tomorrow.It is obvious that (很明显)this measure is effective.3）lt+ be +动词的过去分词+ that从句4）lt+ be +不及物动词+ that从句三，主语从句的用法规则：规则一：主语从句中使用陈述语序。
英语主语从句
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。
高中英语主语从句讲析课件可修改全文
3. It is a pity that I missed the train.
4. It doesn’t matter whether he will come or not.
5. It seems that it is going to rain.
It’s likely/possible/important/necessary/clear that 很可能/重要的是…/必要的是…/很清楚… It+ be +名词+ that 从句 It’s no wonder that…并不奇怪/无疑
It’s a pity/a fact /a common knowledge (众所周知） / a common saying（俗话说）that It+ be + 不及物动词+ that从句 It seems/appears/happens that…显然、明显、碰巧
matter much.
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. TWhhaatt the professor said is of great importance.
that引导主语从句时无词义。What the professor said表示“教授所说的”。
6. It happened that they didn’t know my address.
请你归纳 ？
T——h—a—t —a—s—t—o—r—m——is——c—o—m—i—n—g
is well reported
主语从句
请找出下面句子的主语
1.The
apple pie tastes really delicious n. 2. They didn’t know my address. pron 3. Seeing is believing. verbal noun 4.To do morning exercises everyday is good for you. an infinitive with "to"(带to的不定式)
规律二、连词that 在从句中无实际意义， 但不能省略。
例3. If the solid shape would last or . not was not clear. 正：whether the solid shape would last or not was not clear.
规律三、 引导主语从句在句首只能用
Correct or not?
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.
que sera sera Whatever will be will be the future's not ours to see que sera sera, What will be will be.
when I was just a little boy, I asked my mother, what will I be will I be handsome, will I be rich here's what she said to me: que sera sera whatever will be will be the future's not ours to see que sera sera.
主语从句
主语从句一、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),在句中不做成分,不可以省。
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。
)eg:Where we should leave it is a problem.When they will come hasn’t been made pubic.他们什么时候来还不知道。
名词性从句精华总结
主语从句主语从句概念：在复合句中用作主语的从句叫主语从句。
主语从句的引导词：通常由常见的连词连接。
主要有：whether, what , whatever, how, that, which, who, whom, whose, when, why, where等。
第一部分：常规主语从句，即句子在复合句中充当一个主语（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor has't been decided yet.（4）Whom we must study for is a question of great importance.（5）What caused the accident remains unknown.（6）Whatever you did is right.（7）Whose watch was lost is unknown.（8）What we need is time.（9）What we need are good doctors.（10）Where you go has nothing to do with me.（11）when he is going to go to school still remains uncertain.（12）How we find it is unknown.（13）Why he leaves here was a secret.（14）Which one is better still requires a further discussion.小结:（1)引导主语从句的连接词有哪些？（2)连词位于句首不能省略（3)主语从句大多数情况下视为单三,但也有例外,如例9第二部分：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末（1）It is certain that he will win the match.（2）It is true that he has made a very important discovery in chemistry.（3）It is very likely that they will hold a meeting.（4）It is strange that he should do that.（5）It is important that we all should attend the meeting.（6）It is strange that the man should have stuck to his silly ideas.（7）It is a pity that we won't be able to go to the south to spend our summer vacation. （8）It is still a mystery what caused the accident.（9）It is said that he has gone to shanghai.(=He is said to have gone to shanghai) （10）It is known to all that the gun powder was first invented by the Chinese.（11）It is suggested that the work should be done with great care.（12）It seems that he has seen the film.(=He seems to have seen the film)（13）It happened that the two cheats were there. (=The two cheats happened to be there)(14) It is said that the meeting was going to be held in coming February.小结:（1)以that 引出的主语从句,常以形式主语it引导. It is +形容词/名词/某些动词ed + that 从（2) 在有些that从句中要用虚拟语气(should+do/should+have done)例句4,5,6,11.适用于这种规则的主句谓语单词通常用于表达要求，命令，建议等意思的动词后面接宾语从句；或在主语从句中以“It is +V-ed that sb（should) + V原形+ 其它成分”的形式来适用于该法则。
①主语从句
①主语从句百科名片主语从句(Subject Clause)定义在复合句中充当主语成分的句子叫做主语从句.第一部分常规主语从句，即句子在复合句中充当一个主语主语从句的时态：不受主句的时态影响和限制。
（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor hasn't been decided yet.（4） Whom we must study for is a question of great importance.（5）What caused the accident remains unknown.（6）Whatever you did is right.（7）Who the watch belongs to was lost is unknown.（8）What we need is time.（9）What we need are good doctors.小结:（1)引导主语从句连词有that,whether,who,what,whatever等（2)连词位于句首不能省略（3)主语从句大多数情况下视为第三人称单数,但也有例外,如例（9）第二部分为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末（1）It is certain that he will win the match.（2）It is true that he has made a very important discovery in chemistry.（3）It is very likely that they will hold a meeting.（4）It is strange that he should do that.（5）It is important that we all should attend the meeting.（6）It is strange that the man should have stuck to his silly ideas.（7）It is a pity that we won't be able to go to the south to spend our summer vacation.（8）It is still a mystery what caused the accident.（9）It is said that he has gone to shanghai.(=He is said to have gone to shanghai) （10）It is known to all that the gun powder was first invented by the Chinese.（11）It is suggested that the work should be done with great care.（12）It seems that he has seen the film.(=He seems to have seen the film) （13）It happened that the two cheats were there. (=The two cheats happened to be there)小结:（1)以that 引出的主语从句,常以形式主语it引导. It is +形容词/名词/某些动词ed + that 从句.（2) 在有些that从句中要用虚拟语气 (should+do/should+have done)例句4,5,6,11. 主语从句的用法主语从句与宾语从句两者的用法和在句中的作用是不同的，下面从它们的各自用法来介绍。
主语从句
主语从句一、定义: 主语从句，即在复杂句中充当主语成分的句子，例如"That he finished writing the composition in such a short time surprised us all"，他在很短的时间内写完作文让我们都很惊讶，此复合句主要描述的是某事让我们惊讶，某事就是该复合句的主语，因此“That he finished writing the composition in such a short time”便是该复合句的主语从句。
二、引导主语从句的连词主要有：从属连词：that whether, 连接代词：who whoever whom whose what whatever which whichever, 连接副词：when where why howThat she was chosen made us very happy.她当选了使我们很高兴.Whether she will come or not is still a question.她是否来还是一个问题.What caused the accident is a complete mystery.是什么导致了这次事故还完全是一个谜.Which team will win the match is still unknown.哪个队会赢得这场比赛还不知道.Whoever comes to the party will receive a present.参加聚会的每一个人都将收到一份礼物.When they will start has not been decided yet.他们何时出发还没决定.1. What 与that 在引导主语从句时的区别what既有引导主语从句的作用,同时又在从句中作句子成分(主语、宾语、表语等).这时what相当于all that/everything that..., 常译成"所……的(东西、事情、话等.)"; 而that只起连接作用, 本身无实际意义, 在从句中也不担当任何句子成分.但that引导的主语从句放在句首时, 不能省略that.例如: What is done can't be undone. (谚语)已成定局,无可挽回.What we can't get seems better than what we have.我们得不到的东西似乎比已得到的要好.What you said yesterday is right.That we should work out a plan to deal with the present serious situation is important.我们应该制定一项计划来应付目前严峻的形势,这一点非常重要.That a new teacher will come to teach us geography is true.一位新老师将来教我们地理,这是真的. [巩固练习]4. _______ what they told me really true?A. HasB. IsC. DoesD. Have5. It matters little _______ a man dies, but _______ matters much is _______ he lives.A. how; what; howB. how; it; howC. why; it; whyD. that; what; that6. _______ she couldn't understand was _______ fewer and fewer students showed interest in her lessons.A. What; whyB. That; whatC. What; becauseD. Why; that7. It is pretty well understood _______ controls the flow of carbon dioxide in and out the atmosphere today.A. thatB. whenC. whatD. how8. _______ fashion differs from country to country may reflect the cultural differences from one aspect.A. WhatB. ThatC. ThisD. Which9. -What made her parents so angry?- _______ she had failed in the examination.A. AsB. BecauseC. SinceD. That2．引导词if和whetherif和whether引导动词后的宾语从句时一般可通用,但介词后的宾语从句、主语从句(放在句首时)、表语从句常由whether引导.例如:Whether she will go home or not is unknown.她是否回家还不得而知.Whether we shall raise ducks or geese remains to be decided.我们是养鸭还是养鹅仍没决定.=It remains to be decided whether/if we shall raise ducks or geese.但我们不能说If we shall raise ducks or geese remains to be decided.[巩固练习]10. _______ we'll go camping tomorrow depends on the weather.A. IfB. Whether C .That D. Where3)其它引导词连接代词who, which, whom, whose有各自的意义,起连接作用,并在从句中充当语、宾语、表语、定语等;连接副词when, where, why, how等有各自的意义,起连接作用,并在从句中充当状语.[巩固练习]11. -Do you remember _______ he came?-Yes, I do. He came by car.A. howB. whenC. thatD. if12. It was a matter of _______ would take the position.A. whoB. whoseC. whomD. whomever13. -I drove to Zhuhai for the air show last week.-Is that _______ you had a few days off?A. whyB. whenC. whatD. where14. I read about it in some book or other, does it matter _______ it was?A. whereB. whatC. howD. which三、主语从句的时态不受主句时态的影响和限制（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor hasn't been decided yet.（4）Whom we must study for is a question of great importance.（5）What caused the accident remains unknown.（6）Whatever you did is right.（7）Whom the watch belongs to is unknown.（8）What we need is time.（9）What we need are good doctors.四、名词性从句的时态规则：1）、主句谓语动词是现在或将来时，从句谓语动词可以用任何需要的时态。