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高考英语语法专题讲解-名词从句★名词性从句有：主语从句，表语从句，宾语从句，同位语从句★引导名词性从句的连接词有：连接代词：who, whom, what, which，有词义，在从句中担任成分，如主语、表语、宾语、或定语等；连接副词：when, where, why, how，有词义，在从句中担任成分，作状语；连接词：that, whether, if, as if.1. that1.1 that引导名词性从句的省略情况1.1.1 that引导主语从句、表语从句、同位语从句时，不能省略。
e.g. That he suddenly fell ill last week made us surprised.=It made us surprised that he suddenly fell ill last week形式主语1.1.2 that引导宾语从句时一般可省略，但在以下几种情况中不能省略:1）当that从句和主句有插入词语时不能省略；e.g. He judged that2）当that 从句与另一名词性从句并列作宾语时不能省略；e.g. Everyone knew what happened and that she was worried.3）当that作介词宾语时不能省略。
e.g. she works harder than the others do.That从句做in 的宾语1.2引导名词性从句的that和what的区别that 引导名词性从句时，在从句中不充当任何句子成分，也没有任何含义，只起连接作用, 且在宾语从句中有时可省略；而what引导名词性从句时，在从句中充当主语、宾语、表语或定语。
e.g. That he said so made us angry .无意义What he said at the meeting made us angry.指代说话的内容China is no longer what it used to be.指代过去的样子2. 疑问词 + ever2.1疑问词 + ever和no matter + 疑问词的区别疑问词 + ever既可引导名词性从句，又可引导让步状语从句。
高考英语语法知识点：名词性从句1500字名词性从句是指在句子中充当名词的成分的从句。
名词性从句分为主语从句、宾语从句、表语从句和同位语从句。
在高考英语中，名词性从句是考查的重点之一，我们需要对名词性从句的结构和用法有透彻的理解。
下面是关于名词性从句的一些重要知识点：1.主语从句主语从句在句中充当主语的作用。
主语从句通常以that引导，也可以用whether或if 引导。
例如：- That he is guilty is certain.- Whether we will win the game is yet to be seen.- If it will rain tomorrow is still uncertain.2.宾语从句宾语从句在句中充当宾语的作用。
宾语从句通常以that引导，也可以用whether或if 引导。
需要注意的是，当主句的动词是说、tell、ask、think、believe、know等表示说话、思考、感觉的动词时，常用连词that引导宾语从句，但如果宾语从句的主语与主句的主语相同，可以省略连词that。
例如：- I know that he is a good student.- She asked me if/whether I had finished my homework.- He told her (that) he loved her.3.表语从句表语从句在句中充当表语的作用。
表语从句通常以that引导，也可以用whether或if 引导。
例如：- The fact that he didn't come is disappointing.- The question is whether we should proceed with the plan.- My concern is if/whether we have enough time.4.同位语从句同位语从句用来解释或说明前面名词的具体内容或意义。
2023年高中英语语法：名词性从句用法详解及强化练习分析名词性从句分类简述名词性从句，就是指其作用相当于名词的从句，它包括主语从句、表语从句、宾语从句和同位语从句。
一、主语从句1. 引导词：主语从句就是在复合句中用作主语的从句，引导主语从句的引导词主要有三类：一是that;二是whether;三是那些可以用作疑问词的词语，如what, who, which, when, where, how, why 等。
如：That we shall be late is certain. 我们要晚了，这是确定无疑的。
What he says is not important. 他说的话并不重要。
Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。
2. 形式主语：有时为了避免句子显得“头重脚轻”，可用it作形式主语放在句首，而把真正的主语放在句末。
如：It’s a pity that he didn’t come. 很遗憾他没来。
It was uncertain whether he could come or not. 他是否会来还不肯定。
这三句句首的it均为形式主语，相应的真主语分别是that he didn’t come / what she did / whether he could come or not。
二、表语从句表语从句就是在复合句中用作表语的从句。
一般说来，可用于引导主语从句的引导词也可用于引导表语从句，如that, what, who, which, when, where, how, why, whether等。
如：My idea is that we should do it right away. 我的意见是马上就干。
That is what he meant. 这就是他的意思。
The problem is how we can find him. 问题是我们如何找到他。
2023年高中英语语法：名词性从句运用及考点名词性从句的基本定义名词性从句，从字面意义上看，它在句子中相当于名字的作用。
名词性从句是历年高考的重点和难点也是热点。
它的英文名称是Noun clause。
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，根据它在句子中不同的语法功能，名词性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。
例如：1. The trouble is that I have lost his address.麻烦的是我把他的地址丢了。
2. My suggestion is that we should tell him.我的建议是我们应该告诉他。
3. You are not who I thought you were.你已不是我过去所想像的人。
4. The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。
5. That’s where I first met her.那就是我第一次遇见她的地方。
6. It isn’t as if you were going away for ever.又不是你离开不回来了。
7. Now it was as though she had known Millie for years.现在好像她认识米莉已有好多年了似的。
8. It is not as though we were poor.又不是我们家里穷。
9. That he is still alive is a wonder.他还活着，真是奇迹。
10. That we shall be late is certain.我们要晚了，这是确定无疑的。
名词性从句分类根据从句在主句中所做的成分，名词性从句可以分为以下4种：例如：（1）That the seas are being over fished has been known for years.海洋正在被人们过渡捕捞，许多年来这已是尽人皆知的事情了。
名词性从句知识点汇总一、名词性从句的分类名词性从句，包括四种从句，即主语从句、宾语从句、表语从句、同位语从句。
因为主语、宾语、表语、同位语这四种成分均可以由名词构成，所以这四种从句在主句中都充当了名词的作用，故将这四种从句统称为名词性从句。
如：1.That she will help me made us happy.（主语从句）2.I can understand what he said.（宾语从句）3.This is where I was born.（表语从句）4.The fact that a heavy earthquake happened made me crazy.（同位語从句）二、名词性从句的连接词分类1.that（无含义，不充当成分）2.whetherif（有“是否”的含义，但不充当成分）3.连接代词：what whatever who whoever whom whomever whose which whichever.（在从句中做主语、宾语、表语和定语）连接副词：when whenever where wherever how however why （在从句中做状语）4. as ifas thoughbecause（不充当成分，在名词性从句中只引导表语从句）三、连接词that在名词性从句中可以省略的三种情况1.it 做形式主语，that引导主语从句时It is said (that) he has been studying abroad.据说他一直在国外学习。
2.动词后面的宾语从句中I think(that) you have much to improve in English.我认为你的英语需要提高的有很多。
3.形容词后面的宾语从句中I am afraid (that) I will be late.恐怕我要迟到了。
四、同位语从句和定语从句的区别that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略；that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。
高考英语语法：名词性从句一、that从句1、主语从句（1）that从句作主语时，常用it作形式主语，常见的句型有：It+be+形容词（obvious, true, natural,surprising,good,wonderful,funny,possible,likely,certain,proba ble,etc.）+that从句It+be+名词词组（no wonder, an honor, a good thing, a pity,no surprise, etc.）+that从句It+be+过去分词（said, reported, thought, expected, decided, announced, arranged, etc.）+that从句（2）that能够省略，但that从句位于句首时，that不能省略。
2、宾语从句（1）常见的能够接that从句作宾语的动词有see, say, know, imagine, discover, believe, tell, show, think, consider, be sure, be afraid等。
在能够接复合宾语的动词之后，如think, make, consider等，能够用it作形式宾语。
（2）That从句一般不能充当介词宾语，偶尔可作except, in 的宾语。
3、表语从句（that不可省略）4、同位语从句连词that引导同位语从句时，应在某些抽象名词之后，如：fact, hope, desire, thought, suggestion, idea, news, problem,possibility等，对前面的名词起补充说明的作用，that在从句中不担当任何成分，不能省略。
二、whether/if从句1、在表语从句和同位语从句中，只能用whether不能用if；当主语从句放于句首时，只能用whether不用if；当it作形式主语，主语从句放在句末时用whether或if均可；discuss后引导宾语从句时，必须用whether。
高考名词性从句在句子中起名词作用的句子叫名词从句(Noun Clauses）。
名词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。
一、引导名词性从句的连接词引导名词性从句的连接词可分为三类：连词：that（无任何词意）whether,if（均表示“是否”表明从句内容的不确定性）as if ,as though（均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词：what, whatever, who, whoever, whom,whose, which.whichever,whomever连接副词：when, where, how, why不可省略的连词：1. 介词后的连词2. 引导主语从句和同位语从句的连词不可省略。
That she was chosen made us very happy.We heard the news that our team had won.比较：whether与if 均为"是否"的意思。
但在下列情况下，whether 不能被if 取代：1. whether引导主语从句并在句首2. 引导表语从句3. whether从句作介词宾语4. 从句后有"or not"Whether he will come is not clear.大部分连接词引导的主语从句都可以置于句末，用it充当形式主语。
It is not important who will go.It is still unknown which team will win the match.二. 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。
名词性从句一、定义：在复合句中相当于一个名词，做主语、宾语、表语、同位语的从句。
二、引导词：1. 连词:that , if, whether, as if2. 连接代词:who , what, which, whose, whom以及wh+ever3. 连接副词:when, where, why, because, how三、引导词的作用：1 连词只有连接的功能，而不在从句中充当句子成分。
2. 连接代词和连接副词不但有连接的功能，同时还要在从句中充当定的句子成分，如主语、宾语、表语、定语、状语四、各个句型的注意点（一）主语从句1.一个主语从句的谓语动词用单数。
2.通常为了句子平衡用it做形式主语,而将主语从句放于句尾。
3.由that引导的从句，that虽然没有什么意思，但是却不能省略。
4.WH引导的从句,引导词放于句首，从句用陈述句语序。
5.放于句首时表示是否只用whether, 用IT做形式主语之后，主语从句放于句尾时whether与if均可以。
(二)宾语从句1.that引导宾语从句无意义，不充当句子成分常省略。
但下列情况除外：（1）介词宾语从句的that不省略（2）and连接的几个从句，第二个从句以后的从句的that不省略。
He told me that he had two sons and that they both had gone to college.（3）在动词+it+宾语补足语+宾语从句结构中，that不省略。
I heard it said that he had gone abroadWe found it impossible that he could finish it in such a short time2.Whether ,if 引导宾语从句：两词可互换，但是下列情形除外：（1）whether从句中有or not（2）whether从句做介词宾语Everything depends on whether you agree with us3.许多带复合宾语的句子，宾语从句经常移到句子后部，而用it做形式宾语。
高考英语语法复习：名词性从句一、名词性从句名词性从句相当于名词，可分别在句中作主语、表语、宾语和同位语。
因此，名词性从句可分为主语从句、表语从句、宾语从句和同位语从句。
从属连词that：在从句中不充当任何成分，也没有任何意思，只起连接作用，因此往往可以省略从属连词if, whether：在从句中不充当任何成分，有意义，不可以省略连接代词who, whoever, whom, whomever, which, whichever, what, whatever, whose：在从句中充当成分，有意义，不可以省略连接副词where, when, why, how：在从句中充当成分，有意义，不可以省略一、主语从句１.由从属连词引导的主语从句：①Whether the country should build a nuclear power station is something we must discuss.那个国家是否应该建立核电站……②That light travels in straight line is known to all .光以直线传播２.由连接代词引导的主语从句：①What we need is more time. 我们所需要的是……②Whichever book you choose doesn’t matter to me.无论你选哪本书……③Whoever comes will be welcome.无论谁来……３.由连接副词引导的主语从句：①When the plane is to take off hasn’t been announced.飞机什么时候起飞……②Where he has been is still a puzzle.他到过哪儿……③How much water is flowing can be measured easily.水的流量是多少……4.关于形式主语it①It + be +形容词+ that-从句It is necessary that…有必要……It is important that…重要的是……It is obvious that…很明显……It is likely that….很可能②It + be + -ed 分词+ that-从句It is believed that…人们相信……It is knownto all that…众所周知……It has been decided that…已决定……③It + be +名词+ that-从句It is common knowledge that………是常识It is a surprise that…令人惊奇的是……It is a fact that…事实是……可应用于此句型的名词还有fact / shame / honor / question/pity等。
高中英语语法复习学案（名词性从句）名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。
因此，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。
（一）引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。
有词义，在从句中担任成分，如主语、表语、宾语、或定语等。
2、连接副词：when, where, why, how。
有词义，在从句中担任成分，作状语。
3、连接词：that, whether, if, as if。
that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。
注意：连接代词与连接副词在句中不再是疑问句，因而从句中谓语不用疑问式。
连接代词与连接副词在从句充当句子成分，连接词whether 和if（是否），as if（好象）在从句中不充当句子成分，只起连接作用。
根据句义，如果连接代词与连接副词，whether、if 和as i f都用不上时，才用that作连接词（that本身无任何含义）。
（二）主语从句1、主语从句在复合句作主语。
e.g. Who will go is not important.2、用it作形式主语，主语从句放在句末。
e.g. It doesn’t matter so much whether you will come or not.3、that引导主语从句时，不能省略。
e.g. That he suddenly fell ill last week made us surprised.（三）表语从句1、表语从句在复合句中作表语，位于系动词之后。
e.g. The question was who could go there.2、引导表语从句的连接词that有时可省去。
e.g. My idea is (that) we can get more comrades to help in the work.（四）宾语从句1、宾语从句在复合句中作宾语。
引导宾语从句的连词that一般可省略。
e.g. I hope (that) everything is all right.2、介词之后的宾语从句，不可用which或if连接，要分别用what或 whether。
e.g. I’m interested in whether you’ve finished the work..I’m interested in what you’ve said.3、whether与if都可以引导宾语从句，常可互换。
但下面情况不能互换。
①宾语从句是否定句时，只用if，不用whether。
e.g. I wonder if it doesn’t rain.②用if 会引起误解，就要用whether。
e.g. Please let me know whether you want to go.（此句如果把whether改成if，容易当成条件句理解）③宾语从句中的whether 与or not直接连用，就不能换成if；不直接连用，可换。
e.g. I don’t know whether or not the report is true.I don’t know whether/ if the report is true or not.④介词后的宾语从句要用whether引导。
whether 可与不定式连用。
whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成if。
但引导条件从句时，只能用if，而不能用whether。
e.g. It depends on whether we have enough time.They don’t know whether to go there.Please come to see me if you have time.（五）同位语从句同位语从句在句中作某一名词的同位语，一般位于该名词（如：news, fact, idea, suggestion, promise等）之后，说明该名词的具体内容。
e.g. I have no idea when he will be back.The fact that he had not said anything surprised everybody.练习：名词性从句一、判断下列各句哪句含有名词性从句，并指出是什么从句：1. China is no longer what it used to be.2. The truth that the earth turn around the sun is known to all.3. It was snowing when he arrived at the station.4. How he persuaded the man ager to change the plan is interesting to us all.5. The news that they had won the game soon spread over the whole school.6. The news that you told me yesterday was really disappointing.7. That is where Lu Xun used to live.8. He spoke as if he understood what he was talking about.9. Do you remember the teacher who taug ht us English at middle school?10. I wonder why she refused my invitation.二、用适当的连词填空：1. I can’t decide ____________ dictionary I should buy.2. That’s ____________ he refused my invitation.3. I am very interested in ____________ he has improved his pronunciation in such a short time.4. ____________ we need is more time.5. The fact ____________ she had not said anything at the meeting surprised everybody.6. ____________ and ____________ they will meet has not been decided yet.7. Please tell me ____________ you are waiting for.8. Is that ____________ you are looking for?9. Would you please tell me ____________ the nearest post office is?10. I don’t know ____________ he will agree to the plan or not.三、选择填空：1. His success was because of ________ he had been working hard.A. thatB. the fact whichC. the fact thatD. the fact2."Is Mary from New York City " "I don't know _______."A. from what city does she come fromB. from what city she comeC. what city does she come fromD. what city she comes from3.________ makes mistakes must correct them.A. WhatB. ThatC. WhoeverD. Whatever4. The reason why I didn't go to Shanghai was ________ a new job.A. because I gotB. because of gettingC. I gotD. that I got5. It worried her a bit ____ her hair was turning grey.A. whileB. thatC. ifD. for6. Henry killed the dog. I'll ask him why ________.A. did he do thatB. he did thatC. he didD. he has done so7. Have you seen Henry lately My boss wants to know ________.A. how he is getting alongB. how is he getting alongC. what he is getting alongD. what is he getting along8. It is generally considered unwise to give a child ____ he or she wants.A. howeverB. whateverC. whicheverD. whenever9. He asked me ________ with me.A. what is the troubleB. what wrong wasC. what was the matterD. what trouble it is10. I am sure ________ he said is true. A. that B. about that C. of that D. that what11. When and why he came here ________ yet.A. is not knownB. are not knownC. has not knownD. have not bee12.I wonder how much ________.A. does the watch costB. did the watch costC. the watch costedD. the watch costs13. Mary is ________ someone might recognize her.A. afraid ofB. afraid aboutC. afraid thatD. afraid for14.________ is no reason for dismissing her.A. Because she was a few minutes lateB. Owing to a few minutes lateC. The fact that she was a few minutes lateD. Being a few minutes late15. They came to the conclusion ________ by a computer.A. that not all things can be doneB. because of not all things be doneC. being not all things can be doneD. because not all things can be done16. Why the explosion occurred was ________ the lab oratory attendant had been careless.A. forB. becauseC. sinceD. that17. I don't doubt ________ he'll come. A. that B. if C. what D. whether18. "Why did you go to the wrong class, Mr. Wang " "Well, I forget _______ I was supposed to go to."A. which the roomB. which roomC. what was the roomD. what room was it19. Output is now six times ________ it was before liberation. A. that B. which C. whatD. of which20. Mary: Helen is a mere washer woman, yet she's now buying a big house.Carol: Yes. Because she's always saved ________.A. what little she earnsB. how little she earnsC. for little she earnsD. with little she earns21._______ surprised me most was ________ such a little boy of seven could play the violin so well.A. That...whatB. What...thatC. That...whichD. What...which22. We gave him ________ help we could. A. which B. what C. that D. this23. She is pleased with what you have given him and ________ you have told him.A. thatB. whichC. all whatD. all that24. Excuse me would you please tell me ________A. when the sports meet is taken placeB. when is the sports meet going to be heldC. when is the sports meet to beginD. when the sports me et is to take place25. Do you happen to know ________A. what size shoes he wearsB. how big shoes he wearsC. what is the size of his shoesD. what number shoes are his26. This book will show you ________ can be used in other contexts.A. how you have observedB. how what you have observedC. that you have observedD. how that you have observed27. Where do you think ________ A. has he gone B. has he been C. he's gone D. was he28. Do you know ________A. how many populations there are in the worldB. how much population there is in the worldC. how many the population of the world isD. what the population of the world is29. Would you go and see ________ outsideA. what to take placeB. what Tom has happenedC. what is happeningD. what the matter had been30. The subject of "What is interesting is that I do not even know him." is_______.A. whatB. interestingC. What is interestingD. I31.________ I think he is Charles.A. Who do you think he isB. Do you think who he isC. Whom do you think he isD. Do you think who he is32. He didn't know which room ________. A. they lived B. they lived in C. did they live D. did they live in33. The little boy ate ________ his mother gave him.A. thatB. whichC. whateverD. no matter what34. The city is no longer ________.A. what it isB. that it used to beC. which it wasD. what it used to be35. My parents used ________ they had to get a new car for me.A. whichB. thatC. whatD. all what36.______ we go swimming every day _____ us a lot of good.A. If...doB. That...doC. If...doesD. That...does37.________ was the idea _______ the wife thought ofA. What...thatB. That...whatC. How...whyD. Why...how38._______ did he tell his wife ________ he wished to doA. That...whatB. What...thatC. Where...whichD. Which...where39.One of the men held the view ________ the book said was right.A. what thatB. that whatC. that whichD. which that40. I have no idea ________ or not he has finished the work. A. if B. that C. whether D. which41."Do you know ________ " "His father is a doctor."A. what is his fatherB. who is his fatherC. what his father isD. who his father is42. Is this ________ we met each other two years agoA. placeB. place in whichC. whereD. place which43. It ________ Bob drives badly.A. thinks thatB. is thought whatC. thought thatD. is thought that44.We all know the truth ________ there are air, water and sunlight there are living things.A. whereB. whereverC. thatD. that wherever45. They discussed _______ they could settle the problem without others' help.A. ifB. thatC. whatD. whether46. She asked ________.A. what I was doing when she rang me upB. what was I doing when she rang me upC. when she rang me up what I was doingD. when did she ring me up what I was doing47. - May I borrow the ring - You can take _______ you like.A. no matter whatB. whichC. whicheverD. that48. He said that he was fond of ________.A. what beautiful isB. what is beautifulC. beautiful is whatD. what it is beautiful49. He insisted that he ________ in good health and _______ to work there.A. was, be sentB. is, is sentC. be, was sentD. be, send50. Do you know ________ he expects will give us a talkA. whoB. whomC. thatD. whose一、1、表语从句；2、同位语从句；3、不是；4、主语从句；5、同位语从句；6、不是；7、表语从句；8、宾语从句；9、不是；10、宾语从句二、1. which; 2. why; 3. how; 4. What; 5. that; 6. when, where; 7. who(m); 8. what; 9. where;10. whether三、1-5.CDCDB 6-10.BABCD 11-15.ADCCA 16-20.DABCA 21-25.BBDDA 26-30.BCDCC 31-35.ABCDC 36-40.DABBC。
