主语从句详细讲解
高中语法主语从句 详解 (4份)

主语从句——Noun clauses as the subject主语从句如果一个句子在复合句中充当一个主语, 那么这个句子就是主语从句。
①That he finished writing the composition in such a short time surprised us all.②What we need are good doctors.③Whom we must study for is a question of great importance.1.主语从句的连接词1).连接词: that, whether①.That he will win is certain.②.Whether he’ll join us in the discussion is of great importance.2).连接代词: who, what, which, whom , whose, whoever, whatever, whichever①.It is clear who is afraid of having a change in land ownership.②.What India needs is a law to make land ownership fairer.3).连接副词: when, where, why, how, how many, how much , how long, how soon, how often①When we’ll start tomorrow will be told soon.②Where we can buy oxen is something we need to find out.③Why he came here is not known.④How we can protect the grain from damp needs to be discussed.【连接词】1. that——That t he earth moves around the sun is well known.2. whether——Whether he will come or not is not known yet.3. who ——Who will be sent there has not been decided.4. what——What you need is more practice.5. which——Which one is the best is not clear.6. when, where ——Where he has gone is a question.7. why, how——Why there is gravity is hard to understand.How he can earn a living in Britain remains a big problem.8. whoever、whatever、whichever可引导主语从句。
that引导主语从句的用法(一)

that引导主语从句的用法(一)that引导主语从句的用法在英语中,that可以引导主语从句,被用来作为句子的主语。
这种用法非常常见且重要。
在本文中,将列举一些常见的用法并进行详细讲解。
1. 作为主语从句的引导词在一些长句中,为了增加句子的流畅性和可读性,会使用主语从句。
以下是几个例子:•That he is a great musician is well known to everyone. 这句话的主语从句是”That he is a greatmusician”,其中that引导了主语从句,表示“他是一个优秀的音乐家”是众所周知的。
•That she arrived late was disappointing. 这个句子中的主语从句是”That she arrived late”,表示“她迟到了”让人感到失望。
•That the company went bankrupt shocked everyone. 这个例句中的主语从句是”That the company went bankru pt”,表示“公司破产了”让每个人都感到震惊。
2. 引导动词不定式的主语从句在一些句子中,that用来引导不定式的主语从句。
以下是几个例子:•It is important for everyone to understand that climate change is a serious issue. 这个句子中,that 引导了不定式的主语从句,表示“理解气候变化是一个严重的问题”对于每个人来说都很重要。
•It is common for people to believe that money brings happiness. 在这个例子中,that引导了不定式的主语从句,表示“认为金钱带来幸福”是很常见的。
•It is necessary for us to recognize that change is inevitable. 这个句子中,that引导了不定式的主语从句,表示“承认变化是不可避免的”对我们来说是必要的。
主语从句讲解PPT课件

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(3)连接代who,whom,whose,what,which,whoever,
whatever,whichever,连接副词when,where,how,why
What she did is not yet known.
Whoever comes is welcome.
How she can keep healthy is a secret.
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在主语从句中,谓语动词一般用单数。 Where we will get together has not been decided. 但谓语动词用单数还是复数,不可一概而论,而要视句 子的意义而定。 What I need is money. What I need are books.
主语从句
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主语从句定义: 主语从句是在复合句中充当主语的从句, 其功能同名词一样。
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引导主语从句的关left him made him heart-broken.
(2)从属连词whether
Whether he’ll take part in the play is clear.
据报道… 已证实… 据说… 决定… 相信… 众所周知…
It is said that President Obama will visit our
主语从句讲解和练习题

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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, whether1)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。
高中英语2024届高考名词性从句知识分类讲解(主语从句+宾语从句+表语从句+同位语从句)

高考英语名词性从句知识讲解名词性从句是指在复合句中起名词作用的句子,功能相当于名词词组。
名词性从句在复合句中能作主语、宾语、表语、同位语等,根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。
一、主语从句【定义】在复合句中,作主语的句子称为主语从句。
常见的连接词:(连接词在句中不能省略)that, whether, who, what, whatever, whoever, where, when, why, how等。
【用法】1.连接词 that 引导That we should learn English well is very important.主语从句中 we should learn English well句子完整,不缺成分,用that引导,that 不能省连接词whether,if 引导whether 引导的主语从句可放句首,也可放句中,表“是否”if 引导的主语从句只能引导动词后的宾语Whether I will go or not depend on the weather.It remains to be seen whether / if they can finish the task in time.2.连接代词what, who, which, whose, whatever, whichever,whoever等引导What matters most is your attitude.3.连接副词when,where,why,how等引导How he made it is still unknown.4.it作形式主语为了避免句子头重脚轻,通常把形式主语it放在句首,真正的主语放在句子后面。
常见句型:(1) It is + n.+ that + 句子It is +(a pity / a shame / a fact …)+ that ...(2) It is + adj.+ that + 句子It is +(true / clear / important …)+ that ...(3) It is + 过去分词 + that + 句子It is+ said / announced / expected / believed / hoped… + that ...(4) It seems /appears / happens / turned out that + 句子(5) It hit sb./occurred to sb.that + 句子二、宾语从句【定义】在复合句中,作宾语的句子称为宾语从句。
主语从句语法知识点总结

主语从句语法知识点总结主语从句是一个句子中充当主语的从句。
它可以由连接词引导,如that, whether, if, who, whom, whose, which, what 等。
主语从句通常用于复合句中,作为主句的主语,用来说明主句的内容或描述情况。
以下是几个主语从句的语法知识点总结:1. 引导主语从句的连接词:- that:可引导陈述句主语从句。
例如:"That he is late is not acceptable."- whether/if:可引导一般疑问句主语从句。
例如:"Whether/If he will come is uncertain."- who, whom, whose:可引导人称从句。
例如:"Who/Whom/Whose the winner is will be announced tomorrow."- which:可引导非限制性定语从句主语从句。
例如:"Which team will win is still unknown."- what:可引导名词性从句(包括主语从句中的特殊疑问句)。
例如:"What he said surprised everyone."2. 动词形式:主语从句中的动词形式常常与主语从句所属的句子相一致。
例如,如果主语从句是陈述句,则动词用陈述句的形式;如果是疑问句,则动词用疑问句的形式。
例如:"Why he did it remains a mystery."3. 语序:主语从句的语序通常是主语+谓语,与陈述句的语序相同。
例如:"That she is leaving makes me sad."需要注意的是,主语从句在中文中往往可以通过更自然的句序来表达,而不需要使用从句的形式。
但在英文中,主语从句是一种常见的句型结构,需要熟练掌握和运用。
名词性从句的用法解析
名词性从句的用法解析在英语语法中,名词性从句是一个重要且常考的知识点。
它在句子中能起到名词的作用,包括主语从句、宾语从句、表语从句和同位语从句。
接下来,咱们就详细地聊聊这些名词性从句的用法。
一、主语从句主语从句就是在句子中充当主语的从句。
比如,“What he said is true”在这个句子中,“What he said”就是主语从句,整个句子表达的是“他说的话是真的”。
引导主语从句的连接词有很多,常见的有 that、whether、what、who、which、when、where、why、how 等。
需要注意的是,为了避免句子头重脚轻,常用 it 作形式主语,而把真正的主语从句放在句末。
例如,“It is important that we study hard”这里真正的主语是“that we study hard”,用 it 作形式主语让句子结构更平衡。
二、宾语从句宾语从句在句中充当宾语。
像“ I know that he is a good student”中,“that he is a good student”就是宾语从句,表明“我知道的内容是他是个好学生”。
宾语从句的引导词与主语从句类似,如 that、whether/if、what、who、which、when、where、why、how 等。
宾语从句的时态要根据主句的时态来变化。
一般情况下,如果主句是一般现在时,宾语从句可以根据实际情况用各种时态;如果主句是过去时,宾语从句通常要用相应的过去时态。
另外,宾语从句要用陈述句语序。
三、表语从句表语从句在句中充当表语。
比如说,“The problem is that I have no money” 这里的“that I have no money”就是表语从句,解释说明“问题”的具体内容是“我没钱”。
常见的引导词有 that、whether、as if / as though、because 等。
高考语法 名词性从句之主语从句与表语从句 讲解及练习(附答案)
名词性从句1 主语从句:在复合句中充当主语成分的句⼦子叫主语从句 1.1 主语从句的引导词 1.2 主语从句的形式Conlusion 1:主语从句作主语时,谓语动词一般用单数(第三人称)形式。
Conlusion 2:连词That在句中无实际意义,不能省略。
Conlusion 3:whether引导的主语从句可放在句首,但if不能。
Conlusion 4:主语从句中连词that/whether等不能重复使用。
Conlusion 5:what引导的主语从句,可根据表语决定主句的单复数形式。
Conlusion 6:为了平衡句子结构,主语从句大多可改写为it形式主语形式。
从属连词连接副词连接代词引导词that,whether,if when, why, where, how, whenever, wherever, however what, who, whom, which, whatever,whoever, whomever, whichever形式说明⽰示例that 引导的主语从句置于句⾸首、that 在主语从句中不做任何成分、不可省略他要来看望我们,这使我们很⾼高兴。
形式评语it代替主语从句It + is/was + adj. +从句对于学⽣生来说很明显的是,他们要为未来做好准备。
“It is/was + necessary/important/surprising/strange/unbelievable/obvious…+从句”结构中,从句谓语动词用“should+动词原形”,should可以省略It + is/was + 名词 +从句我们的希望是,我们都能通过考试。
It + is/was + V-ed +从句据宣布,该计划已经顺利通过。
“It is/was + suggested/advised/ordered/insisted/required/demanded…+从句”结构中,从句谓语动词用“should+动词原形”,should可以省略It + is/was + 特殊动词 +从句(happen,occur,seem,appear…)你似乎不同意这个计划。
主语从句讲解及练习
1 主语从句 一、 名词性从句概述: 在句子中起名词作用的句子叫名词性从句(Noun Clauses)。名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同的语法功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。 名词性从句的连词 连接词:that,if/whether(是否), 连接代词:what, whatever, who, whoever, whom, whomever, whose, which, whichever 连接副词:when, where, how, why, whenever, wherever, however 二、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。 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. 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,在开头不能用if,只能用whether。 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. It’s uncertain whether/if he will come. {不是在句首} (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: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、 2
主语从句用法及其讲解
主语从句用法及其讲解主语从句用法及其讲解以下是店铺整理的主语从句的讲解,希望对大家有所帮助主语从句三要点[寻规找矩]请观察下列句子,注意划线部分句子的.意义及用法。
1. What surprised me most was that the little girl could play the violin so well.2. Who will go to the concert is not known.3. That she was chosen made us very happy.4. Whether she will come or not is still a question.5. Which book they will choose is still unknown.6. When we shall hold our sports meet is not decided.7. It’s strange that he know s nothing about it.8. It is a pity that she has made such a mistake.9. It is said that President Jingo will visit our school next week.[小结归纳](一)语序主语从句使用陈述语序,其通常结构为“引导词 + 主语 + 谓语 + 其他成分”;但当连接代词同时充当从句主语时,其结构为“连接代词+ 谓语 + 其他成分”,如句1、2。
(二)引导词① that引导主语从句时无词义,也不充当任何成分,但通常不可以省略,如句3;② whether引导主语从句时意为“是否”,通常不能用if来代替,如句4;③ 可以引导主语从句的连接代词主要有:who, whom, whose, what, which, whatever, whoever等,如句5;④ 可以引导主语从句的连接副词主要有:where, when, how,why等,如句6。
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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;1. 从属连词that,whether引导的主语从句。
从属连词that,whether在主语从句中的作用只是引导主语从句,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。
用作it作形式主语的结构:(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…幸运的是It’s (im)possible…(不)可能……It’s unlikely that…不可能It’s strange that…奇怪的是……(2)It is/was +名词+that 从句It’s a pity that…遗憾的是……It’s a fact that…事实是……It’s good news that…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…真是可耻……It’s common knowledge that….. 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…看来……I t 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……It’s reported that…据报道……It’s decided that…尚未决定It’s believed that…据认为……It’s announced that…据宣布……It suddenly struck me (occur to me that…我突然想到(感觉到)……(5)其他It doesn’t matter…是无关紧要的It makes no difference…毫无区别……It is of little consequence that…无关紧要[随堂练]It is a pity __________ she has made such a mistake. 她犯这样的错误是令人遗憾的事。
It's strange __________ he didn’t come yesterday. 他昨天没来是很奇怪的。
It is reported __________ the number of wild animals in Africa is decreasing.据报导非洲野生动物的数量正在减少。
It is said __________ there was a terrible plane crash this morning.据说今天早上有一起可怕的飞机坠毁事故。
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;但是如果用it作形式主语,而把主语从句放在句末时,从属连词that在口语中可以省略。
误:They should like each other is natural.正:That they should like each other is natural.正:It is natural that they should like each other.2) 如果主语从句放在句首,不能用if引导,但是如果用it 作形式主语,而把主语从句放在句末时,也可以用if引导.误:If Mary really heard him is really doubtful.正:It was doubtful if Mary really heard him.3) 用于It is important / natural / necessary / impossible that...句型中, 主语从句应使用虚拟语气, 谓语动词用“should + 动词原形”的形式或直接用动词原形。
4) 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。
[随堂练]Does _______ matter if he can't finish the job on time?A. thisB. thatC. heD. it_______ is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. ItIt is necessary that a college student _______ at least a foreign language.A. mastersB. should masterC. masteredD. will master_______ is known to everybody, the moon travels round the earth once every month.A. ItB. AsC. ThatD. What3. 由连接代词引导的主语从句。
(1)连接代词who, what, which, whom, whose, whatever, whoever, whomever, whichever等,引导主语从句时,它们分别在从句中担任主语、宾语或定语,不能省略。
__________ leaves the room last ought to turn off the lights. 走得最晚的应当关灯。
__________ you have done might do harm to other people. 你的行为可能伤害别人。
__________ he said at the meeting astonished everybody present.他在会议上的发言时所有入会者吃惊。
__________ made the long distance call is not important. 谁打的长途电话并不重要。
(2)what引导主语从句“……的东西/事情”时,可用来表示the thing(s) which这种意思,引导从句,表示一样东西与一件事情,这种用法的what称为关系代词型what,who,whom,which,what可以和ever构成合成词,和what一样引导从句,ever起强调作用。
这些关系词在句子中充当成分,所以不能省略。
此类主语从句不能用形式主语it引导。
__________ (=The thing which I need) is a mobile phone.我所需要的是一部移动电话。
__________ leaves the office (=Any one who leaves the office) should tell me.无论是谁离开办公室都应该告诉我。
4. 关系副词引导的主语从句。
连接副词有when, where, why, how, however, whenever, wherever等引导主语从句时,它们在从句中担任状语,不能省略。
此类主语从句可以转换为以it作形式主语的句子。
__________ he didn’t come here is not clear to anyone. 他为什么没来谁也不清楚。
__________ a telephone works is a question which not everyone can answer.电话是怎样工作的,这个问题并不是每个人都能回答。
__________ she has gone is not known yet. 她去了哪儿,还不知道。
__________ they will start has not been decided yet. 他们何时动身还未定下来。
__________ he did it didn't concern me. 他为什么做这件事与我无关。
(二)位置主语从句不可位于句首的四种情况。
(1)含主语从句的复合句是疑问句、感叹句时,主语从句不可提前,用引导词it作形式主语。
Is it really true that he has gone abroad? 他真的出国了吗?How surprising it was that he failed in the exam! 真令人惊奇,他考试没有及格!(2)It is said, reported, …结构中的主语从句不可提前。
It’s said that the play is very interesting. 据说戏剧很有趣。
It’s reported that the highway will be opened to traffic next week. 据报道,高速路下周通车。
(3)It happens, occurs…结构中的主语从句不可提前。
It occurred to her that she had forgotten to lock the door. 她突然想起忘了锁门。
It happened that I met him in the street. 我恰巧在大街上遇到了他。
(4) It doesn’t matter how, whether or not…结构中的主语从句不可提前。
It doesn’t matter whether he likes it or not. 他喜欢与否无关紧要。