下载文档原格式
第05讲名词性从句之主语从句1．了解主语从句的概念和用法。
2．可以根据本节课的内容来完成一些习题。
关于各种从句，有一个浅显易懂的规律：它在句子里面是什么成分，就是什么从句。
比如：▼ 定语从句：作定语的从句I have a dog that is very cute. 我有一只可爱的狗主语谓语宾语定语从句（句中做定语，限定修饰前面的名词dog）▼ 宾语从句：作宾语的从句，放在动词或介词后面I think the dog is very cute.我觉得这个狗很可爱主语谓语宾语从句（句中做think的宾语）▼ 状语从句：作状语的从句I bought a dog because it’s very cute. 我买了一只狗，因为它很可爱主语谓语宾语状语语从句（句中做状语，表原因）那么，主语从句是？聪明的人都能看出来——作主语的呗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：引导主语从句的词有连词：that, whether, if；连接代词：what, whatever, who, whoever, whom, whomever, whose, which, whichever；连接副词：when, whenever, where, wherever, how, however, why。
答案第1页，共15页1. 连词that, whether, if引导的主语从句that在主语从句中不作成分，没有意思，不能省略；whether和if虽不作句子的成分，但有“是否”的意思，且if引导的主语从句不能位于句首。
主语从句1．定义：用作主语的从句叫做主语从句。
2．引导主语从句的关联词有三类：（1）从属连词that、whether。
如：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.Whether he’ll come here isn’t clear。
他是否会来这里还不清楚。
从属连词：that， whether等.that 引导主语从句只起引导作用,本身无实际意义，在主语从句中不充当任何成分，但不能省略.由whether及其他连词引导的主语从句放在句首，句后都可. If只能放在句中.造句:1。
、很明显他是个好人.2。
、他通过了考试让妈妈很高兴。
3、天气是否会转晴还不确定。
(3）（特殊疑问词）连接代词who, whom， whose， what, which, whoever， whatever, whichever 如：__________watch was lost is unknown.__________she did is not yet known. 她干了什么尚不清楚.__________side will win is not clear。
__________comes is welcome。
不论谁来都欢迎。
__________ was said has left us much to think。
这里说的话都应当保密.造句：1. 我们需要的是时间。
2。
谁将成为我们的班长还没有决定。
3。
哪本书更好还不知道。
(4) （特殊疑问词）连接副词 where, when, how， why，wherever，whenever，however。
___________ he did it remains a mystery.When they will start is not known yet.How this happened is not clear to anyone。
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。
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。
高中英语从句之主语从句讲解
（特殊句式系列）
一，that引导但是补充当成分的主语从句
That the man can get it is known to all=It's known to all that the man can get it 这个男人能得到它是众所众知的。
1，It's important that you can learn English well
你能学好英语是很重要的
2，It's known that you are so strong
你很强壮是众所周知的。
二，if 和whether 做的连接词的主语从句
It is not sure whether he will come to your house or not 他是否来你家是不确定=Whether he will come to your house or not is not sure
It is not sure if he will come to your house
三，疑问代词引导的主语从句
What you can see is true 你所看到的都是真的
Whom you are talking with is my friend 你正在聊天的这个人是我的朋友
What I want are the bags on the desk 我所想要的是在桌子上的包。
What I want is a bag on the desk 我所有想要的是在桌子上的那个包。
It is true what you can see 你所看到的都是真的
It is a bag on the desk what I want
四，it 做形式主语的几种形式
1，常用形容词：
Certain 明确的，clear 清晰的，important重要的，natural自然的，necessary 必要的，obvious明显的，unbelievable 难以置信的，strange 奇怪的，unlikely不可能的，right 正确
It is unlikely that you can lift the big stone 你能举起这个大石头是不可能的。
2，常用名词：
A pity 遗憾，a shame 耻辱，good news 好消息，a fact 事实，a problem 问题，a wonder奇迹，an honor 荣耀，no wonder 难怪，a surprise 惊奇，a mystery 迷。
It is a mystery that you can fly in the sky 你能在天上飞是一个迷。
3，常用动词过分词汇
1，advised 建议，2，believed 据认为，3，decided做出决定，4，heard 有人听说，5，made clear 澄清，6，remembered 有人记得，7，suggested 有人建议，8，turned out 结果，9，announced 据宣布，10，considered 据认为，11，found out 据查明，12，hoped 有人希望，13，pointed out 有人指出，14，reported 据报道，15，said 据说，16，told 据告知，17，well known 很著名。
It is turned out that the man helped the woman before 这个男人帮助过这个女
人的事情已经有了结果。
4，特殊动词常用语主语从句：
1，seem 看上去，2，happen 碰巧，3，appear显得，4，matter 重要
It appears that he doesn't regret his decision 看起来好像他并不后悔他的决定。
5，主语从句的疑问形式
Is it true that he can lift the big stone？他能举起大石头是真的么？
Does it appear that he doesn't regret his decision 看起来好像并不后悔他的决定？
课后习题
1.________ makes mistakes must correct them.
A. What
B. That
C. Whoever
D. Whatever
2. It worried her a bit ____ her hair was turning grey.
A. while
B. that
C. if
D. for
3.When and why he came here ________ yet.
A. is not known
B. are not known
C. has not known
D. have not known
4. ________ 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
5. ________ 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
6.________ we go swimming every day ________ us a lot of good.
A. If...do
B. That...do
C. If...does
D. That...does
7.It ________ Bob drives badly.
A. thinks that
B. is thought what
C. thought that
D. is thought that
8.It's uncertain ________ the experiment is worth doing.
A. if
B. that
C. whether
D. how
9.________ the boy didn't take medicine made his mother angry.
A. That
B. What
C. How
D. Which
10.____ we can't get seems better than ____ we have.
A. What, what
B. What, that
C. That, that
D. That, what
11.____ you don't like him is none of my business.
A. What
B. Who
C. That
D. Whether
12..____ we'll go camping tomorrow depends on the weather.
A. If
B. Whether
C. That
D. Where
13._________is going to do the job will be decided by the Party committee.
A. That
B. Why
C. How
D. Who
14._______we'll finish translating the book depends on the time.
A. When
B. Why
C. What
D. That
15.______he won't go there is clear to all of us.
A. How
B. What
C. Why
D. This
16.______the house will be built will be discussed at tomorrow's meeting.
A. If
B. Where
C. That
D. What
17. ._______you come or not is up to you.
A. What
B. If
C. Why
D. Whether
18.._______makes mistakes must correct them.
A. Who
B. Anyone
C. Whoever
D. Anybody
19.._______team will win the match is a matter of public concern.
A. Which
B. That
C. If
D. How
20..________leaves the room last ought to turn off the lights.
A. Anyone
B. The person
C. Whoever
D. Who
[参考答案] 1-10 CBACD DDCAA 11-20 CBDAC BDCAC。
