高中英语语法之主语从句
高中英语语法——主语从句课件(57张)
引导词
4) 连接副词when, where, how ,why • When we will leave hasn’t been decided. • How she keeps healthy is a secret.
Whether he will come makes no difference. What we need is more time.
引导词
1) 从属连词that和whether： • That he will come is certain. • Whether he will come is uncertain.
• What we need is more time.
• Which book I shall choose hasn’t been decided.
引导词
3)连接代词whoever, whatever, whichever • Whoever comes is welcome. • Whatever I have is yours. • Whichever you want is yours.
_____ that 只起引导作用，本身无意义，不充当 任何分，但不能省略。 whether 不做成分，表“_______ 是否 ”。 在主语从句中只能用 _________, ___ whether 不能用if
引导词
2) 连接代词who, what, which • Who will go makes no difference.
1. 令人吃惊的是他改变了主意。 It is a surprise that he changed his mind. 2. 真可惜你错过了这么一个好机会。 It is a pity that you missed such a good chance. 3. 事实是我们周围的污染正变得越来越严重。 It is a fact that the pollution around us is becoming more and more serious.
主语从句高考知识点总结
主语从句高考知识点总结主语从句是英语语法中非常重要的一部分，它在高考中经常被考查。
主语从句用来作为主句的主语，从句的谓语动词通常是单数形式。
这篇文章将对主语从句的用法进行总结和探讨，帮助同学们更好地掌握这一知识点。
主语从句在句子中起到了连接主句和从句的作用。
从句的引导词通常有以下几个：that、whether、what、who、which、whose、when、where以及how等。
在使用主语从句时，要注意根据句子的需要选择合适的引导词。
首先，我们来看一些常见的主语从句的句型。
一种常见的句型是"That + be动词"，例如："That he is coming is certain."，意思是“他来是确定的。
”另一种常见的句型是"It + be动词 + (形容词) + that..."，例如："It is important that we protect the environment."，意思是“保护环境是重要的。
”除了常见的句型外，主语从句还有其他几种形式。
一种形式是主语从句位于句首，例如："What she said is true."，意思是“她说的是真的。
”另一种形式是使用“whether”来引导主语从句，例如："Whether he will come or not is uncertain."，意思是“他是否会来是不确定的。
”在使用主语从句时，需要注意主语和谓语动词之间的一致性。
如果主语从句所引导的从句是一般现在时态，那么主句的谓语动词也应该使用一般现在时态。
同样，如果从句是一般过去时态，那么主句的谓语动词也应该使用一般过去时态。
例如："It is important that he studies hard."应该改为"It is important that he study hard."。
2023年高中英语语法精讲,主语从句详细讲解
2023年高中英语语法精讲—主语从句详细讲解主语从句结构及用法在句子中担当主语的从句就叫做主语从句，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。
通常结构为“引导词 + 主语 + 谓语 + 其他成分"。
一. 概念：在句子中担当主语的从句就叫做主语从句，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”。
二. 引导词：1. that引导eg. That you are coming to London is the best news I have heard this long time.2. whether引导eg. Whether they would come to conference was a question.3. 连接代词引导: who,whom, whose, what, which, whoever, whomever, whichever, whatevereg. Whoever is top from wins the game when two matched players meet.4. 连接副词引导: therefore, besides, otherwise, however, moreover, still, thus, meanwhileeg. How this happended is not clear to anyone.5. 关系代词型what引导三. 形式主语it:1. 对关系代词型what引导的主语从句，可以使用形式主语。
eg. It is clear enough what he meant.2. 如果句子是疑问句，则必须用带形式主语it的结构.eg. Is it true that all of us need to to conference?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。
高中英语主语从句语法解释
高中英语主语从句语法解释高中英语主语从句语法解释高中英语语法主语从句1．定义：用作主语的从句叫做主语从句。
2．构成：关联词+简单句3．引导主语从句的关联词有三类：(1) 从属连词that。
如：That they were in truth 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。
(2) 从属连词whether。
如：Whether hell come here isnt clear. 他是否会来这里还不清楚。
(3) 连接代词who, whom, whose, what, which, whoever, whatever, whichever连接副词 where, when, how, why。
如：What she did is not yet known. 她干了什么尚不清楚。
How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚。
Whoever comes is welcome. 不论谁来都欢迎。
Wherever you are is my home ---- my only home. 你所在的`任何地方就是我的家----我唯一的家。
解释：1．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。
【高中英语主语从句语法解释】。
高考英语主语从句知识点
高考英语主语从句知识点主语从句是英语语法中的一个重要知识点，也是高考中经常考察的内容之一。
掌握主语从句的使用方法和注意事项，对于提高语法准确性和阅读理解能力都非常有帮助。
本文将介绍主语从句的定义、使用时的注意事项以及一些常见的主语从句的句型。
一、主语从句的定义主语从句是指在一个句子中充当主语的从句。
它通常由连词that, whether或if引导，也可以由关系代词what, who, which,whom等引导。
二、主语从句的使用注意事项1.主语从句的用法多样化，可以表示陈述、疑问、建议、要求等不同的意义。
在使用时需要根据具体语境进行选择。
2.如果主语从句谓语动词是不及物动词，需要用it作形式主语。
例如：It is important that we study hard.3.在表示是否时，通常用whether或if引导主语从句。
例如：Whether you go or not is up to you.4.在表示疑问句时，常用疑问词引导主语从句。
例如：What you said is not clear.5.当主语从句与主句的主语一致时，可以用it作形式主语。
例如：It's a pity that you missed the party.三、常见的主语从句句型1.由that引导的主语从句。
例如：That he is rich is well known.2.由wh-词引导的主语从句。
例如：What she said is true.3.由whether或if引导的主语从句。
例如：Whether he will come to the party remains to be seen.4.由it作形式主语的主语从句。
例如：It doesn't matter whether you come or not.5.句型：It is + adj. + that从句。
例如：It is important that we protect the environment.四、主语从句的练习题1. ______ you have any questions, please feel free to ask. (whether/if)2. ______ he will pass the exam is still unknown. (that)3. ______ are you going to give your presentation? (where)4. ______ I owe you an apology is obvious. (that)5. ______ he is doing now is to prepare for the final exam. (what)答案：1. Whether2. That3. Where4. That5. What通过以上介绍，我们了解了主语从句的定义、使用注意事项以及常见的句型。
高中英语语法(2)主语从句[1]
![高中英语语法(2)主语从句[1]](https://img.taocdn.com/s3/m/56caf97b1711cc7931b716da.png)
高中英语语法（2）主语从句★背诵要点：1、主语从句是指主语用一个从句来表达的句子，也就是说在谓语动词前面的部分是一个从句的句子是主语从句。
2、主语从句的引导词有：1）连词：that, whether2）连接代词：who, what, which, whose, whom3）连接副词：where, when, how, why3、主语从句使用正常主谓语序，不能用倒装语序。
4、通常主语从句用形式主语it来代替，将从句置于句末。
5、that在主语从句中不能省略。
例如：What he said is hard to understand.Where he has gone is unknown to us all.That you find this exercise difficult is quite natural.It is quite natural that you find this exercise difficult.★注意要点：1、引导词that与whatwhat既有引导主语从句的作用,同时又在从句中作成分,这时what相当于all that或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.2、引导词if和whether表示是否的意思时，不能用if代替whether.It hasn't been decided whether he'll come or not.Whether he'll come or not hasn't been decided.3、熟记以下变化Whoever=no matter who=any one whoWhichever=no matter which=any one whichWhatever=no matter what=anything that★基础题练习：1．_______your father wants to know is________ getting on with your studies.A. What; how are youB. That；how you areC. How；that you areD. What；how you are2. The trouble is ___we are short of tools.A. whatB. thatC. howD. why that3. America was __________was first called “India” by Co lumbus.A. whatB. whereC. the placeD. there where4. China is becoming stronger and stronger. It is no longer_________ .A. what it used to beB. what it was used to beingC. what it used to beingD. what it was used to be5. ________he really means is ________he disagrees with us.A. What …thatB. That …whatC. What …whatD. That …what6. The energy is ________ makes the cells able to do their work.A. thatB. whichC. whatD. such7. All ___ you told me yesterday was serious.A whatB whichC thatD why8. ____ we need more chances to practice speaking English is quite clear.A ThatB /C WhetherD What9. ____ that air tickets are more expensive that bus tickets.A As we all knowB As it known to allC It is known to allD Which we all know10. Where and when ___ there hasn’t been decided.A shall we goB we wentC we shall goD did we go11. It is hard to say __ money you are allowed to take.A whateverB how muchC whenD where12. Whether we will go out for a walk ___ the weather.A depends onB dependsC reliesD rely on13 I took it for granted ____ you would stay with us.A whichB whyC whetherD that14. It seems ____ he has never been paid the money.A thatB howC asD even though15. ______ there is another chance for you to try.A It is saidB It is said thatC He saidD You are said16. It is impossible ____ he misunderstood _____ I said.A that; whatB that; thatC what; thatD /; what★提高题：1.___ most students couldn’t understand is ____ their teacher changed his mind at the eleven hour.A That; thatB Which; whatC What; whatD What; why2. _____ that the whole nation is in a complete mess.A To reportB It is reportedC ReportingD Reported3. ____ was once considered impossible has now become reality.A WhatB ThatC ItD Something4. ___ on Sunday will depend on the weather in the coming few days.A That we go outB Whether we go out or notC If we go out or notD That if we go out or not5. ___ the committee has proposed and how it has been carried out ___ agree.A What; don’tB How; don’tC What; doesn’tD How; doesn’t6. __ he miss ed the flight was the real reason ___ he didn’t attend the meeting on the first day.A That; thatB When; thatC That; whyD When; why★翻译：1、他刚才所说的话似乎很有道理。
高中英语主语从句
高中英语主语从句主语从句，在英语语法中，是一个句子作为主语，它可以是陈述句、疑问句或者是特殊疑问句。
这种从句在高考英语中占据了重要的地位，因此，理解和掌握主语从句的用法对于高中生来说至关重要。
我们要理解什么是主语从句。
主语从句就是一个句子在复合句中充当主语，例如：What he said is not true.在这个句子中，“What he said”就是一个主语从句。
主语从句有三种类型：陈述句、疑问句和特殊疑问句。
陈述句作为主语从句时，通常以that引导，例如：That he will come to the party is certain.疑问句作为主语从句时，通常以whether或what引导，例如：Whether he can come is still a question.特殊疑问句作为主语从句时，通常以who、what、which等引导，例如：Who will come is not clear.在理解了主语从句的基本概念和类型之后，我们还需要掌握如何正确使用主语从句。
使用主语从句时，需要注意以下几点：主语从句的引导词要使用正确；主语从句的时态要和主句保持一致；主语从句的语序要使用陈述句语序。
除了正确使用主语从句，我们还需要理解主语从句的省略情况。
在某些情况下，主语从句可以省略掉that，例如：It is certn (that) he will come.这种情况下，it是形式主语，真正的主语是that he will come。
高中英语主语从句是一个重要的语法知识点，需要我们熟练掌握并正确运用。
只有通过不断的练习和学习，我们才能在高考中取得优异的成绩。
（2）主语从句一般用什么引导词？引导词在从句中担任什么成分？（3）主语从句的时态有什么特殊之处？请举例说明。
（4）主语从句与宾语从句、表语从句有什么异同点？通过预习题，我们对主语从句有了初步的了解。
接下来，我们将深入学习主语从句的构成、用法以及与其他从句的区别。
高中英语语法--主语从句复习
主语从句1）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。
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, whomev er, 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。
2023年高中英语语法精讲之主语从句详细讲解
2023年高中英语语法精讲之主语从句详细讲解主语从句结构及用法在句子中担当主语的从句就叫做主语从句，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。
通常结构为“引导词 + 主语 + 谓语 + 其他成分"。
一. 概念：在句子中担当主语的从句就叫做主语从句，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”。
二. 引导词：1. that引导eg. That you are coming to London is the best news I have heard this long time.2. whether引导eg. Whether they would come to conference was a question.3. 连接代词引导: who,whom, whose, what, which, whoever, whomever, whichever, whatevereg. Whoever is top from wins the game when two matched players meet.4. 连接副词引导: therefore, besides, otherwise, however, moreover, still, thus, meanwhileeg. How this happended is not clear to anyone.5. 关系代词型what引导三. 形式主语it:1. 对关系代词型what引导的主语从句，可以使用形式主语。
eg. It is clear enough what he meant.2. 如果句子是疑问句，则必须用带形式主语it的结构.eg. Is it true that all of us need to to conference?主语从句有哪几类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。
高中英语语法主语从句讲解及练习
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。
高中英语语法---主语从句课件(共29张)
表语从句 1. 表语从句就是用一个句子作为表语。 主语 + 连系动词 + 一个句子作表语---表 语从句
The problem is when we can get a pay rise. 2. 连接表语从句的连接词有：that, what, who, when, where, which, why, whether, how.
从句, 介词的宾语从句和形容词的宾语 从句.
1. 动词的宾语从句 大多数动词都可以带宾语从句. We all expect that they will win, for members of their team are stronger. 我们都预料他们会赢, 因为他们的队员 更强壮.
He told us that they would help us though the whole work. 他告诉我们在整个工作中, 他都会帮忙的.
2. 介词的宾语从句 用wh-类的介词宾语从句 We are talking about whether we admit students into our club. 我们正在讨论是否让学生加入我们的俱乐 部. The new book is about how Shenzhou 6 manned spaceship was sent up into space. 这本新书是关于神州6号载人航天飞船是 如何升如太空的.
4. It is strange that the man should have stuck to his silly ideas.
5. It is a pity that we won't be able to go to the south to spend our summer vacation. 6. It is still a mystery what caused the accident.
高中英语语法——主语从句课件(57张)
理解主语从句
他通过了考试让老师很高兴。 He passed the exam. It made the teacher happy. He passed the exam made the teacher happy. That he passed the exam made the teacher happy.
理解主语从句
他何时要来还不清楚。 When will he come? It is not clear. When will he come is not clear. When he will come is not cleall succeed is certain. Whether he will come makes no difference. What we need is more time.
It is a pity that 很可惜)we lost the match. *_______________( It is a fact that 这是事实)he cheated in the exam. *______________(
1. 令人吃惊的是他改变了主意。 It is a surprise that he changed his mind. 2. 真可惜你错过了这么一个好机会。 It is a pity that you missed such a good chance. 3. 事实是我们周围的污染正变得越来越严重。 It is a fact that the pollution around us is becoming more and more serious.
• Whatever I have is yours.
• Whichever you want is yours.
高中英语知识点归纳主语从句与宾语从句的引导词与结构
高中英语知识点归纳主语从句与宾语从句的引导词与结构高中英语知识点归纳：主语从句与宾语从句的引导词与结构主语从句（Subject Clauses）和宾语从句（Object Clauses）是英语语法中两个重要的从句类型。
它们在复杂句中充当主语或宾语成分，承担着关键的语义和句法功能。
本文将对主语从句和宾语从句的引导词与结构进行归纳总结。
一、主语从句的引导词与结构主语从句是复杂句中作主语的从句，它引导主语从句的常见词包括：引导词常常是连接代词，例如"what"， "who"， "which"等，有时也可以是连接副词，例如"when"，"where"，"how"等。
1. 引导主语从句的连接代词：a) "what"在主语从句中作主语时，代替前面整个主句的内容。
例如：What he said is true.（他说的是真的。
）b) "who"在主语从句中代表人。
例如：Who will go with us remains to be decided.（谁将和我们一起去还有待决定。
）c) "which"在主语从句中代表事物。
例如：Which team will win is uncertain.（哪一支队将获胜是不确定的。
）2. 引导主语从句的连接副词：a) "when"在主语从句中代表时间。
例如：When we can meet again is still unknown.（我们何时能够再次见面仍然未知。
）b) "where"在主语从句中代表地点。
例如：Where we will go for vacation hasn't been decided yet.（我们去哪里度假尚未决定。
2023届高考英语语法名词性从句之主语从句全面剖析讲义
2023年高中英语语法名词性从句之主语从句全面剖析主语从句全面剖析为使同学们更好地掌握其用法,本文对主语从句语法做了一个详细的梳理，帮助大家梳理主语从句的语序，连接词的选用等内容，对于it构成的主语从句做了详细的解释。
一、主语从句的引导词主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导。
1. that引导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 newsI 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 is top from wins the game when two mat ched players meet. 两强相争勇者胜。
Whichever (of you) comes in first will receivea prize. 无论(你们)谁先到都可以得奖。
Whichever you want is yours. 你要哪个哪个就是你的。
高中英语知识点归纳主语从句的用法
高中英语知识点归纳主语从句的用法主语从句是英语语法中的一个重要知识点。
它用于修饰主句的主语，并在句子中起到名称、代词或名词性从句的作用。
通过使用主语从句，可以使句子结构更加丰富多样，表达更加具体清晰。
下面是对主语从句的用法进行归纳总结。
1. 引导主语从句的连接词：主语从句通常由从属连词引导，常用的引导词有：- That：常用于陈述句中，作为连接词引导主语从句。
例如：“That he is a talented singer is widely known.”- Whether/if：用于疑问句或选择句中，引导主语从句。
例如：“Whether he will come or not is still uncertain.”- Who/whom/whose：用于引导讨论人的主语从句。
例如：“Who will be the next president is under discussion.”- What/which：用于指代事物的主语从句。
例如：“What happened yesterday is beyond my control.”2. 主语从句在句子中的位置：主语从句通常在句子中作为主语出现，放在句首。
例如：“Why he left in such a hurry is still a mystery.”3. 动词形式与主语从句：主语从句的谓语动词形式与从句中的主语保持一致，即采用单数或复数形式。
例如：“What I want is a peaceful life.”4. 主语从句的时态：主语从句的时态通常与主句时态保持一致。
例如：“That she has passed the exam is a great relief to her parents.”5. 特殊情况下的主语从句：在某些特殊情况下，主语从句中的谓语动词应为不定式形式。
如：- It + be + 原形动词 + that从句：例如“It is important to study hard.”- There + be + 名词 + that从句：例如“There is no doubt that he is telling the truth.”通过对主语从句的学习与理解，可以更好地运用它，丰富句子结构，使语言表达更加准确、流畅。
高中英语：主语从句
高中英语：主语从句什么是主语从句？主语从句是一个句子中担任主语角色的从句。
它通常由一个连接词引导，连接词可以是关联代词（如what, who, which, where, when）或关联副词（如how, why）。
主语从句在句子中起着非常重要的作用，因为它代替了句子的主语，帮助我们更加清楚地表达意思。
主语从句的结构主语从句的结构非常简单，通常由一个连接词引导，后面跟着一个完整的句子。
主语从句和其他从句一样，有自己的主语和谓语。
下面是几个主语从句的例子：- What he said surprised me. （他说的话让我感到惊讶）- Who will win the game is still uncertain. （谁会赢得比赛仍然不确定）- Where we go for our vacation depends on the weather. （我们去哪里度假取决于天气）- How they managed to escape from the building remains a mystery. （他们如何成功逃离大楼仍然是一个谜）主语从句的用法主语从句可以在句子中起到主语的作用，代替一个名词或名词短语。
它可以帮助我们避免重复使用某个名词，同时使句子更加简洁清晰。
下面是一些主语从句的常见用法：1. 询问事实或情况：例如，What he said，Who will win。
2. 表达个人观点或意见：例如，It is important that we study hard。
主语从句是英语语法中非常重要的一部分。
在写作和口语表达中，熟练地运用主语从句可以使我们的表达更加准确、简洁和流畅。
参考资料：。
高中主语从句
高中主语从句高中英语学习中，主语从句是一个比较重要的语法知识点，也是英语语言表达中的一个难点。
主语从句是由一个从属连词引导，作为主语的一个从句。
下面是关于主语从句的一些例句：1. What he said is true. (他说的是真的。
)2. Whether he will come or not is not certain. (他是否会来还不确定。
)3. That he was absent from school yesterday is known to us all. (我们都知道他昨天没来上课。
)4. If it rains tomorrow, we'll stay home. (如果明天下雨，我们就呆在家里。
)5. Whoever comes here is welcome. (谁来这里都受欢迎。
)6. It is important that we should learn English well. (我们应该学好英语很重要。
)7. Why he left early is unknown. (他为什么早走不得而知。
)8. Whether you like it or not, you have to finish the work. (不管你喜不喜欢，你都得完成这个任务。
)9. That he can speak three languages surprises me. (他会说三种语言让我很惊讶。
)10. How he managed to pass the exam is beyond my understanding. (他是如何通过考试的我无法理解。
)主语从句可以引导陈述句、疑问句、祈使句和感叹句等。
在句子中，主语从句通常位于句首或句尾，而且在句子中起到了主语的作用。
掌握主语从句的使用，可以使我们的英语表达更加准确、得体。
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if
It was not clear whether the solid shape
would last or not.
形式主语
真正主语
主语从句
引导主语从句在句首只能用whether, Conclusion: 但有it作形式主语的whether/if都可以.
3. it作形式主语
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.
主语从句
在句中充当主语的从句叫做主语从句。
Find the subject clauses in the following sentences, and translate them.
1That he will come is certain. 2Whether it will please them is not easy
4. W__h__e_t_h_e_rwe’ll go camping tomorrow depends
on the weather.
5.W__h_o__e_v_e_rleaves the room last ought to turn off
the lighபைடு நூலகம்s.
注意：
If ×
Wh. ether the solid shape would last or not was not clear.
6When they will start is not known yet.
7How he became a great scientist is known to us all.
8Who will take part in the meeting has not been decided.
9Whoever breaks the law will be punished.
高中英语语法之主语从句
1. I don’t know where the post office is. object clause 宾语从句
2. Did she tell us how we should do the work? object clause 宾语从句
3. My dream is that one day there is no generation gap between our mums and us.
That we shall be late is certain.
-- It’s certain that we shall be late.
1. That the earth is round is known to all.
-- It’s known to all that the earth is round.
*It is strange that we should lose the game.
3) It +不及物动词+从句
It happened that...
碰巧……
It occurred to sb. that… 某人突然想起…
*__It__h_a_p_p_e_n_e_d__th_a_t_I came into the office at that time.
10Where she is from is unknown.
引导主语从句的关联词:
从属连词 that, whether, (不作成分）
连接代词 what, who, whom, whose, （作成分） which, wh+ever
连接副词 （作状语） when, where, how, why
宾语从句考点： 1. 引导词 2. 谓语动词单复数 3. It作形式主语
1.引导词
一.that ---只起引导作用，不充当成分，无词义，但不能省略。
That she left him hurts him so much.（她离开他 ）
1. That we will be late is certain.（我们将迟到了） 2. _T__h_a_t_t_h_e__e_a_r_th__i_s_r_o_u_n__d__ is known to all. (地球是圆的)
3. That you missed the chance is a pity(你错过了这次机会)
二.whether 是否，表不确定的事情. 主语从句在句首只能用whether
×Whether he will come here is not easy to say(他是否会来这）
( If he will come here. .. )
It is necessary \important \strange \natural +that…+(should) +do…表示理应如此，惊奇, 不相信,惋惜等 *_I_t _is__p_o_s_s_ib__le__th_a_t__(很可能)she will come back tomorrow. *_I_t_i_s_o_b_v_i_o_u_s_t_h_a_t__(很明显)this measure is effective.很明显这个措施有效。
to say. 3Why he did it remains a mystery. 4Which side will win is not clear. 5What seems easy to some people seems
difficult to others.
思考：主语从句有哪些引导词，这些引导词如何选用？
（我们什么时候开会和去哪里吃饭还没决定 )
2. What 引导主语从句时,主句谓语动词的单复数由 表语的单复数决定.
What he wants __a_r_e__these books. What he wants ___is___some water.
1. T__h_a_t_ you don’t like him is none of my
predicative clause 表语从句
Revision
Find the subjects in the following sentences.
1. A tree has fallen across the road. 2. You are a student. 3. To find your way can be a problem. 4. Smoking is harmful. 5. What she said is known. 6. That we shall be late is certain. 7. It is certain that we shall be late.
翻译练习 1.(谁将去见他)_W_h__o_w__il_l _m_e_e_t_h_i_m_ is not decided. 2.(哪个班级会赢得这场足球赛)__w_h_i_c_h__c_la_s_s__w_il_l__ ___w_i_n__th_e__fo_o__tb_a_l_l _g_a_m_e__is not clear so far. 3.(他能否买到飞机票)_W_h_e_th_e_r_h_e_c_a_n__ge_t_t_h_e_p_la_n_e_t_ic_ket doesn’t matter much. 4.(我们如何去那里)______H_o_w__w_e__w_i_ll_g_o__t_h_e_re_ is a question. 5.(你刚才告诉我的)__W__h_a_t_y_o_u__to__ld__m_e__ju_s_t_n__o_w__ was really a surprise. 6.(他什么时候出国)____W_h__e_n_h_e__w_i_ll_g_o__a_b_r_o_a_d__ is being discussed 7.(他为什么哭)____W_h_y__h_e__is__c_r_y_in_g___ is not clear.
Who will host the meeting hasn’t been decided. 主
What you said just now is not true. 宾
Whoever he is doesn’t matter. 表
Whose car runs faster is obvious. 定
三.其他疑问词（who(ever), whose,which(ever), what(ever)，when, where…）
what 在从句中作宾语
做成分（主、宾、表、定）
What we need
is more practice.(我们所需要的）
When 在从句中作状语
(我们何时开会）
When we will begin the meeting is under discussion.
It is reported that... 据报道……
It is believed that...据信……;人们相信……
It is suggested that + (should）do... 建议……
It must be admitted that…必须承认……
It cannot be denied that… 不可否认……
碰巧我当时走进办公室。 *__It_o_c_c_u_r_r_e_d_t_o__m_e__th_a_t_I forget to sent the letter.
我突然想起我忘记去送信了。
4) It + be +过去分词+从句
It is said that...
据说……
It is known to all that... 众所周知……
Conclusion: 主语从句作主语时，谓语动词一般用单数形式。
2.主语从句中的“主谓一致”
1.主语从句通常被看作一个整体,主句的谓语动词用单数 形式.