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高中英语语法——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，名词性从句成分为主语从句、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。
1. 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。
that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。
例如：What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下：（1）It + be + 名词 + that从句（2）It + be + 形容词 + that从句（3）It + be + 动词的过去分词 + that从句（4）It + 不及物动词 + that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…注意：连词that, whether在从句中不担任句子成分，只起连接作用，不能省略。
高考英语名词性从句高频考点易混点高频考点一：考查that与what的区别在引导名词性从句时，从属连词that一般要注意三个"不"：1.不省略。
当从属连词that引导的主语从句位于句首时，that不省略；that引导同位语从句时，一般不省略。
2.不作成分。
that 在名词性从句中不作任何句子成分。
3.无实义。
that 在名词性从句中没有实义。
在引导名词性从句时， what一般要注意一个"不",一个"有词义",一个"作成分"：1.不省略。
what 引导名词性从句时，不省略。
2.有词义。
what 引导名词性从句时，有词义。
一般表示"……的东西/事情等"，这一用法与that 的用法不一样。
3.作成分。
what 在引导名词性从句时，在从句中充当成分。
这一用法与that 的用法不一样。
例如：Nobody believed his reason for being absent from the class that he had to meet his uncle at the airport.该句中，that引导同位语从句，在句中不作任何成分，不能省略且无词义。
What the teacher said had a good effect on the children.what引导主语从句，在句中有词义。
高频考点二：it放在句首，真正的主语是that从句常用句型如下：① It+系动词+n.+ that从句;② It+系动词+adj.+ that从句;③ It+be+动词的过去分词形式（如said, reported, suggested等）+that从句；④ It+特殊动词（appear, seem, happen, matter, turn out, work out等）+that从句。
高频考点三：考查whether与if的区别whether与if在作"是否"讲时,是可以互换的。
高中英语名词性从句详细讲解一 . 名词性从句考查的焦点主要有以下六方面1.考查名词性从句的语序问题2.考查引导词 that 与 what 的区别3.考查 it 在名词性从句中作形式主语和形式宾语的用法4.考查 whether 与 if 的区别5.考查名词性从句中的疑问词 +ever 引导的名词性从句与 no matter+ 疑问词引导的状语从句的区别6.考查名词性从句的虚拟语气问题二 . 名词性从句的含义及连接词名词性从句的含义:在复合句中起名词作用的从句叫做名词性从句。
它包括主语从句、宾语从句、表语从句和同位语从句。
引导名词性从句的连接词可分为四类：1.that （无含义，不充当成分）2.whether, if（有“是否”的含义，但不充当成分）3. 连接代词： what,whatever, whomever,whose,which,whichever.who,whoever,（在从句中做主语、whom,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 if,as though,because （不充当成分，在名词性从句中只引导表语从句）三 .四类名词性从句语法要点1.主语从句在整个句子中用作主语的从句叫主语从句。
What he wants to tell us is not clear.他要跟我们说什么，还不清楚。
It is known to us how he became a writer.我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
it作形式主语：有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。
高考英语知识难点名词性从句分析高考英语知识难点名词性从句分析名词性从句，指的是在句法上所起的作用与名词所起的作用相同的那些从句，它包括主语从句、宾语从句、表语从句和同位语从句。
能引导名词性从句的`引导词很多，但用得最多，且能同时引导这四类名词性从句的首选that从句。
同学们在使用名词性that从句时，应特别注意以下几点：一、名词性that从句的功能特点that只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。
名词性that从句在句中能充当主语、宾语、表语、同位语等。
如：That he will come is certain。
他将来，这是肯定无疑的。
（that 从句用作主语）I noticed that he spoke English fluently。
我注意到他说英语很流利。
（that 从句用作宾语）The problem is that we havent got enough money。
问题就是我们还没有足够多的钱。
（that 从句用作表语）The fact that he loves Mary is clear to everyone。
他喜欢玛丽这一事实是人人都清楚的。
（that 从句用作同位语）二、名词性that从句用作介词宾语在一般情况下，名词性that从句不能用作介词的宾语，如不能说：They were worried over that you were sick。
（误）He must face up to that he is no longer young。
（误）。
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。
高考英语复习名词性从句十大考点及热点问题教案名词性从句包括主语从句、宾语从句、表语从句和同位语从句。
因为它是从句，因此具有句子的特点，有主、谓成份；同时又具有名词性特点，所以可以在句子中作主语、宾语、表语或同位语。
名词性从句是中学英语学习的重点，也是高考的主要考点之一。
无论是从高考的角度，还是从英语学习本身来讲，名词性从句的以下知识，都是我们必须弄懂和掌握的重点和热点问题。
一、引导词what与that的用法区别。
引导主、宾、表语从句时，what要充当主语、宾语或表语等句子成分，that不作任何成分，只在语法上起连接的作用。
例如（NMET’96）：____ we can’t get seems better than ____ we have.A. What; whatB. what; thatC. That; thatD. That; what解析：本句包含一个主语从句和一个宾语从句，且两个从句都缺乏宾语，可见两个引导词都必须充当成分，所以答案是A。
又如（上海高考‘98）：____ caused the accident is still a complete mystery.A. WhatB. ThatC. HowD. Where解析：该题答案是A，what在主语从句中作主语，即作谓语动词caused的执行者。
在下面的例句中，that不充当任何成份，只起语法连接作用（因为句子本身不缺成分）：That the former Iraq president Saddam was captured has been proved.二、引导词whether和if的用法区别。
通常，引导主语从句、表语从句和引导同位语从句时，要用连词whether，不用if；习惯上也只能说whether or not，而不说if …or not。
例如（MET92）：____ the 2000 Olympic Games will be held in Beijing is not known yet.A. WheneverB. IfC. WhetherD. That解析：试题中的从句位于句首，不难知道这是一个主语从句，所以答案是C。
名词性从句的重难点第一篇：名词性从句的重难点名词性从句的重难点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：连接词：that, whether, if 不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.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.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。
that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。
例如：What he wants to tell us is not clear.他要跟我们说什么，还不清楚。
Who will win the match is still unknown.谁能赢得这场比赛还不得而知。
It is known to us how he became a writer.我们都知道他是如何成为一名作家的。
2023届高考英语语法难点讲义：名词性从句考点精析1. that省略问题①只有用在单一的宾语从句才可以省略；②而在并列宾语从句和主语从句、表语从句以及同位语从句都不可以省略。
If we are serious about ensuring (that)our science is both meaningful and reproducible, we must ensure (that)our institutions encourage that kind of science.如果我们真的要确保我们的科学既有意义又可复制，我们就必须确保我们的机构鼓励这种科学。
(动词后只有一个宾语从句，that可以省略)To realize how great was the dramatic activity, we must rememberfurther that hosts of plays have been lost, and that probably there is no authorof note whose entire work has survived.要想认识到戏剧活动的伟大之处，我们必须进一步记住，许多戏剧已经消失，而且可能没有一位著名作者的全部作品留存下来。
(remember后面跟着两个宾语从句，that不可以省略)2. whether& if替换问题只有在宾语从句中，whether可以用if替换，但是下面的几种情况例外：①whether or not搭配(三个词紧跟一起只能用whether，如果or not放结尾依然可以使用if替换)；②介词+whether。
③在动词不定式之前只能用whether；④宾语从句放在句首表示强调时，只能用whether；⑤用if引起歧义时，只用whether。
Since our chief business with them is to enable them to share in a common life we cannot help considering whether or not we are forming the powers whichwill secure this ability.由于我们对他们(年轻人)所做的首要工作在于使他们能够在生活中彼此融合，所以我们就禁不住考虑自己是否正在形成一种确保他们获得这种能力的力量。
名词性从句高考难点分析名词性从句高考难点分析分析解读：名词性从句包括主语从句、宾语从句、表语从句和同位语从句。
名词性从句是高中英语学习的重点，也是高考的主要考点之一。
名词性从句的主要考查内容：连接词的正确选择；语序问题等，因此我们必须弄懂和掌握以下难点问题。
教学目标：分析解决名词性从句解题过程中的几个难点。
教学内容：一、连接词what1. what与that的区别。
引导主、宾、表语从句时，what要充当主语、宾语或表语等句子成分，that不作任何成分，只在语法上起连接的作用。
例如例1 ____ we can’t get seems better than ____ we have.A. What; whatB. what; thatC. That; thatD. That; what例2_____ makes the book so extraordinary is the creative imagination of the writer.（13北京）A. ThatB. WhatC. WhoD. Which2. what与how的区别。
例 3 The shocking news made me realize _____ terrible problems we would face.A. whatB. howC. that例4Sorry, I’m late, but you cannot imagine _____ great trouble I took to find your house.Sorry, I’m late, but you cannot imagine _____ great the trouble I took to find your house.A.howB. howeverC. whateverD. what例5 You know ______excited we were when we saw the astronaut get off the bus.A. how muchB. howC. whatD. what much3. what与which的区别。
高考英语名词性从句要点难点讲解一、知识框架二、知识点梳理（一）名词性从句主要用法梳理主语从句1．主语从句的引导词你的支持对我们的工作很重要。
你能做的任何事情都会对我们有所帮助。
How we understand things has a lot to do with what we feel.我们如何理解事情与我们所感受到的有很大关系。
Where Li Bai，a great Chinese poet，was born is known to the public，but some won't accept it.李白，中国伟大的诗人，出生的地方人人皆知，但是有些人对此并不接受。
The limits of a person's intelligence，generally speaking，are fixed at birth，but whether he reaches these limits will depend on his environment.通常来说，一个人智力上的极限从一出生就确定了，但他是否能够达到极限取决于他所处的环境。
2．形式主语it作形式主语的常见句型：(1)It＋be＋形容词(necessary/likely/important/certain等)＋that从句(2)It＋be＋名词(短语)(a pity/a shame/no wonder等)＋that从句(3)It＋be＋过去分词(said/told/reported等)＋that从句(4)It＋不及物动词(seem，appear，happen，matter等)＋that从句It is uncertain what side effect the medicine will bring about，although about two thousand patients have taken it.尽管大约两千名患者已经服用了这种药，但是它会带来什么样的副作用还不清楚。
It doesn't matter whether you pay by cash or credit card in this store.在这个商店里你用现金支付还是信用卡支付都没有关系。
宾语从句1．宾语从句的引导词她问我是否把书还给图书馆了，我承认我还没有还。
Our teacher always tell us to believe in what we do and who we are if we want to succeed.我们的老师总是告诉我们，如果我们想成功的话，就要相信我们所做的事情以及我们自己。
2．形式宾语宾语一般放在及物动词或介词之后，但是，在下列情况下，须用it作形式宾语，而将真正的宾语(常为不定式/从句)后置。
(1)动词find/feel/think/consider/make＋it＋宾补(形容词或名词)＋不定式/从句(2)动词hate/ like/ dislike/ appreciate/enjoy＋it＋从句(3)短语动词see to/ depend on/rely on＋it＋从句(4)固定搭配take it for granted that/owe it to sb.that＋从句No matter where he is，he makes it a rule to go for a walk before breakfast.无论他在哪里，他都定了一个规矩——早餐前散步。
I shall see to it that he is taken good care of when you are absent.你不在的时候，我负责把他照顾好。
I think it necessary that we take plenty of boiled water every day.我认为我们每天多喝白开水是有必要的。
3．宾语从句的时态一般情况下，宾语从句须与主句的时态保持一致，即当主句是一般现在时时，从句可根据具体情况选用合适的时态；当主句为过去的某种时态时，从句须用相应的过去的某种时态。
当从句的内容为真理或客观事实时，须用一般现在时。
表语从句1．表语从句的引导词对用户来说最重要的是产品达到了预期的效果。
This is where we usually think it's easier to just give up.这就是我们通常认为更容易放弃的地方。
2．as if/as though引导表语从句as if/as though意为“好像，仿佛”，引导的表语从句常跟在系动词(如seem，appear，look，taste，sound，feel，smell等)之后。
若表语从句所述的是非真实的情况，从句用虚拟语气；若所述的是事实或是极可能发生的情况，从句用陈述语气。
The thick smog covered the whole city.It was as if a great black blanket had been thrown over it.厚重的烟雾覆盖着整个城市，好像把一个厚厚的黑色的毯子扔到它的上面。
3．其他常考的表语从句(1)This/ That/ It is why＋表语从句(表结果)“这/那就是……的原因”(2)This/ That/ It is because＋表语从句(表原因)“这/那是因为……”(3)The reason why...is that＋表语从句“……的原因是……”From space，the earth looks blue.This is because about seventyone percent of its surface is covered by water.从太空中看，地球是蓝色的。
这是因为地球表面约百分之七十一都被水覆盖着。
同位语从句同位语从句在句中作某一名词的同位语，位于该名词之后，用以说明该名词的具体内容。
常见同位语从句的名词：advice，conclusion，doubt，fact，hope，idea，news，promise，question，suggestion，thought，truth，wish，word等。
引导同位语从句的引导词：that，whether，how，where，when，why等。
The manager put forward a suggestion that we should have an assistant.There is too much work to do.经理提出一个建议，我们应该有个助手。
有太多的工作要做。
[技法点拨]名词性从句与语法填空1．首先确定空格处所在从句是否为名词性从句。
然后分析从句在整个句中所充当的成分，确定从句所属类型：主语从句、宾语从句、表语从句还是同位语从句。
2．判断从句中的连接词。
(1)若从句不缺少成分则要考虑句意是否完整，若句意不完整，则需用whether/if；若句意完整，则用that。
(2)若从句缺少主、宾或表语，则用连接代词。
(3)若从句缺少状语，则用连接副词。
另外，还需注意一些特殊的引导词(如whether，because，as if 等)的用法。
（二）高考高频词汇精选背诵（F字母）巩固练习单句语法填空1．Jane moved aimlessly down the treelined street，not knowing ________ she was heading. 2．The notice came around two in the afternoon__________ the meeting would be postponed. 3．It is often the case ___________ anything is possible for those who hang on to hope. 4．Richard swims three times a week after work.This is_________ he keeps fit.5．Since there is only one laboratory in the school，it is important to check _____ the students can use it.6．It is obvious ______ the local government can do to protect the environment for the next generations.7．However dark the road ahead is，always keep your head up to the sky because that's ____ your dreams lie.8．The fact has worried many scientists_______ the earth is becoming warmer and warmer these years.9．________ there are living creatures in the outer space as those on Earth hasn't been proved until now.10．Every year, ________ makes the most beautiful kite will win a prize in the Kite Festival.11．It is said________ he is focusing on a book on space exploration.But ______it will come out remains up in the air.12．When I walked on the street, I wanted to say_________ clean the streets were.13．I don't doubt_______ the plan is practical，but I doubt ______he will stick to the plan until it's finished.14．The most pleasant thing of the rainy season is_______ one can be entirely free from dust.15．“Every time you eat a sweet，drink green tea.” This is _______ my mother used to tell me.16．The question occurred to me _______ we should go to get the car repaired.We were in the middle of the forest at that time.17._______ will come to help with my English hasn't been decided.18.One of the main reasons for this is _______ teachers work too hard but get too little.19.We have offered him the position，but I don't have the slightest idea ________ he will accept it.20.The question occurred to me________ we should go to get the car repaired. We were in the middle of the forest at that time.答案：1.where 2. that 3. that 4. how 5.when 6. what 7. where 8. that9.Whether 10,whoever 11. that; when 12. how 13. that; whether/if14.that 15. what 16. where 17.Who 18.that 19.whether 20. that高考核心词汇检测1.is important in sport, but of at least equal importance are skills.A.FairB. FakeC. FitnessD.Flavour2.On New Year's Eve, New York City holds an outdoor _________ which attracts a crowd ofpeople.A. affairB. facilityC. fictionD. event3.20.With your help, I believe I will be able to __________this difficult mathematics problem.A. figure outB. end up withC. be fed up withD. be familiar with4.The cause of the accident may have been the engine's ________to operate.A. faultB. failureC. inconvenienceD. disorder5. A driver is asked to keep his safety belt ________ while driving on the freeway.A. fixedB. foldedC. fastenedD. furnished6.Pop music is loved by lots of people, but it is not to everyone’s _____.A. smellB. favourC. soundD. taste7.See what I look like now! Why not take up exercise to improve your ________.A. fancyB. formC. shadowD. figure8.Because of _______ competition, prices of food are likely to drop.A. federalB. fierceC. fairD. fundamental9.Green products are becoming more and more popular because they are environmentally_______.A. friendlyB. fullyC. financiallyD. fatally10.In 2005, tsunami struck Southeast Asia, and it is quite difficult to _________ the losses.A. figure outB. make outC. fill inD. fall behind11.Alfred Nobel, a Swedish chemist, left more than 9 million dollars of his ______ to found theNobel Prizes. A. fortune B. value C. fund D. income12.She wanted to ______ the model competition, which was strongly opposed by her parents.A. engage inB. enter forC. focus onD. fall off13.His executive position and qualifications ______ him to a higher salary.A. entitledB. electedC. fascinatedD. forced14.He went into the room on tiptoe ______ waking up the sleeping child.A. in favour ofB. in face ofC. for fear ofD. in the form of15. He ______ that it would take a lot of time to do this job.A. foresawB. fledC. fulfiledD. fetched答案：1~5 CDABC 6~10 DDBAA 11~15 ABACA。
