名词性从句常考点
高考名词性从句知识点总结
高考名词性从句知识点总结高考是每个学生在学习过程中都会经历的一次重要考试。
在语文科目中，名词性从句是一个常见的考点。
名词性从句是指在句子中充当名词的从句，可以充当主语、宾语、表语或者介词宾语。
下面就来总结一下高考中常见的名词性从句知识点。
1. 主语从句主语从句在句子中充当主语的角色，常用的引导词有：that, whether/if, who, what, which, how等。
例如：- That he is innocent is beyond doubt.（他无辜是毫无疑问的）- Whether/if she will come to the party is still uncertain.（她是否会来参加派对还不确定。
）2. 宾语从句宾语从句在句子中充当宾语的角色，常用的引导词有：that, whether/if, who, whom, whose, what, which等。
例如：- I believe that love can change the world.（我相信爱可以改变世界。
）- I don't know whether/if he will come or not.（我不知道他是否会来。
）3. 表语从句表语从句在句子中充当表语的角色，常用的引导词有：that, whether/if, who, whom, whose, what, which等。
例如：- My dream is that I can travel around the world.（我的梦想是我可以环游世界。
）- The question is whether/if she will accept the offer.（问题是她是否会接受这个提议。
）4. 同位语从句同位语从句用来解释或说明一个名词或代词，常用的引导词有：that, whether/if, who, whom, whose, what, which等。
高中英语高考名词性从句高频考点易混点整理(含练习和答案)
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。
名词性从句考点复习(上课)
等名词后面的表语从句、同位语从句中要用虚 (should) + do/be done 拟语气，即________________________
考点5
it作形式主语和形式宾语
找出下列句子中的错误 1. I think that worthwhile that we spent so much money on
基本句型：
It is +形容词、名词、过去分词+ that ... + (should) do a. It is important (necessary, natural, strange, advisable etc)+that b. It is a pity( a shame, no wonder etc)+that c. It is suggested (ordered, proposed, required, demanded, requested, insisted etc)+that
①表示建议、要求、命令,坚持等动词suggest、
advise、propose、demand、require、 insist ．request、command、order后的从句谓语动 词用 __________________________ 注意suggest 当表示“暗示、表明“讲时，insist 表 示 总结 归纳： “坚持认为”之意时，从句按需要来选择时态
考点4虚拟语气
A. takes
a)主语从句中的虚拟语气
D. take
1. It is ordered that he _____ the examination?
B. has to take C. must take
高考英语名词性从句6大考点总结课件
宾语从句：
表语从句； 位于系动词后，在句中作表语的从句叫表语从句 结构： 主语+系动词+表语从句（系动词为 be,look,seem,remain，become…..) Tom is no long what he used to be. That’s where I can’t agree with you. The question is whether that man will turn up. 常 用结构；It is/was because…. The reason is that…….(that不省） look/seem/sound as if….. That is why····· ····（那是··的原因） ·· Why···is that····· ··的原因 ··· ····（··· 是··） ··
考点之三:考查名词性从句的语序 考例:The photographs will show you _______ . A. what does our village look like B. what our village looks like C. how does our village look like D. how our village looks like
分析:本题句子的意思是:一般认为孩子要什么就给什么是不明 智的.whatever引导的是宾语从句,A. however 和D. whenever是 不能作宾语的;而C. whichever表示"无论哪一个、无论哪些",表示 在一定范围内的人或事物,此处并不涉及"一定范围内的人或事物", 所以也不能选.
名词性从句精讲 及 5大考点
名词性从句精讲及五大考点请判断下列的句子属于哪种从句1. When we will start is not clear.2. I don’t think he can finish the task without your help.3. My idea is that it is time for us to study hard.4. Do you agree with the idea that it is time for us to study hard?名词性从句的引导词：1. 连接词：that(无意义),if, whether(是否) 都不做成分2. 连接代词：who, whom, whose, what, which, whoever, whatever, whichever….3. 连接副词：how, when, where, why 做状语名词性从句五大常考考点考点1：A:连接词that与what的区别______ he said makes me happy._______ a new teacher will come is true .that 只起连接作用，无意义，在从句中不充当任何成分,且在宾语从句中有时可省。
what既起连接作用, 又在从句中作主语, 宾语,表语(且在名词性从句中只有what可作表语）1. ____ made him fail is ____ he was lazy.2. China is no longer ____ it used to be.3. I work in ____ is called the Hometown of Apple.4. We express the hope ______they will come to visit China again.5. We all hope ________ we will be admitted to university next year, and ______ all of our teachers will be healthy and happy forever.1._______ he said so made us angry ._____ he said at the meeting made us angry.2. A modern city has been set up in ______ was a wasteland ten years ago.A. whatB. whichC. thatD. whereB : what (什么) / which ( 表选择, 哪一个)★What 无范围；Which有范围1. --- Do you know _______ Mr Black’s address is ?---He may live at No. 8 or No. 9 of Bridge Street. I am not sure of _______.2. I read about it in some book or Internet. Does it matter ______ it was?C : that 引导不同的从句(判断下面，定语从句?同位语从句？)Do you know the fact that he won the first prize?Do you know the fact that they were talking about?★定语从句是对先行词起修饰限定作用，而同位语从句则解释说明先行词的具体内容考点2. 区别if与whether1. I don’t know ________ I’ll be free tomorrow.2. I don’t kno w _______ or not he is free now.3. The question is _______ this book is worth reading.4. It depends on _______ we will have enough money.5. _______ they can master the grammar matters a lot to their homework.只能使用whether 的情况：a. 主语从句b. 表语从句c. 同位语从句e. 介词后的宾语从句g . whether or not 直接连用时不用if1. ________ we’ll go camping tomorrow depends on the weather.2. The argument _______ we’ll have a sports meeting remains to be settled.3. I’m thinking about________ they will support us.4. We didn’t know ________ or not she was ready.考点3 ：it与名词性从句A:it 作形式主语That he made such a mistake is a pity.→That he was absent from school is strange.→用it 作形式主语的结构(1) It is ＋名词＋从句It is a fact that … 事实是…It is an honor that …非常荣幸It is common knowledge that …是常识(2) It is ＋形容词＋从句It is natural that… 很自然…It is strange that… 奇怪的是…(3) It is＋过去分词＋从句It is reported that… 据报道…It has been proved that… 已证实…It is said that… 据说…(4) It ＋不及物动词＋从句It seems that… 似乎…It happened that… 碰巧…It appears that… 似乎…1. It is widely accepted ____ the earth goes around the sun.A. whileB. thatC. ifD. forB:it 作形式宾语(1) make /find/ feel / consider / think it + adj / n + that…(2)it 指代后面从句所叙述的内容,常用like/dislike/love/hate/appreciate/make+it + if 或when从句▲I have made it my habit that I get up before 6:30 everyday .▲I would appreciate it if you would turn the music down .1. I have to make clear that he told a lie.（改错）2. I like ___ in the autumn when the weather is clear and bright. (2014)A. thisB. thatC. itD. one考点4.what,whatever,who,whoever……Who will take the position isn’t decided.________________ 等引导的名词性从句不含有疑问意义，相当于名词后加一个定语从句，____________等引导的名词性从句含有疑问意义。
2023届高三英语一轮复习语法小专题课件：名词性从句
练习——语法填空
➢(9) Mr. White is opposed to repairing the old building, and that's__w_h_e_r_e____ I don't agree. ➢(10) _W_h__o_e_v_e_r___ has helped to save the drowning girl is worth praising.
练习——语法填空
➢(1) __W__h_a_t_____ struck me most in the movie was the father's deep love for his son. ➢(2) __W__h_e_th__e_r__ we will have a bright future depends on our diligence.
whose;whom(ever); ●3. 连接副词： when(ever);where(ever);why; how
名词性从句在语法填空中的高频考点
考点1：what和that的用法归纳
➢What: 起连接作用；有词义（什么）；充当成 分（主宾表）； ➢That: 起连接作用；无词义；不充当成分；
练习——语法填空
➢(5) I am not interested in __w_h_e_t_h_e_r___ they believe in me or not. ➢(6) As John Lennon once said, life is ___w_h_a_t_____ happens to you while you are busy making other plans.
练习——语法填空
➢(7) The problem is _h_o_w______we can improve our reading skills in such a short time. ➢(8) She asked a question __w__h_y_____there was a delay.
名词性从句五大常考考点及常见错误
二.连接词,连接代词,连接副词
1. What he is has nothing to do with you. 2. Whose ticket this is has not been found out. 3. _________we’ll start tomorrow will be told soon. When 4. __________we can buy oxen is something we Where need to find out. How / When 5._____________he came here is not known. 6._________ we can protect the grain from damp How needs to be discussed. 7. __________he’ll go to see his grandmother How soon depends on the time he can spare.
充当任何成分 what 既有连接作用， 又要在从句中作成分 （ 主语，宾语， 表语）(… 的东西;物;话;时间; 地点;人物;数目等不同概念)
1.After five hours’ drive, they reached what was the place they’d been dreaming of. 2. The other day, my brother drove his car down the street at what was a dangerous speed. 3. The way he did it was different from what we were used to. That 4.___________ the earth is round is known to us all. what 5. Our school is quite different from _______ it was before. 6. Father made a promise ______ if I passed the that examination he would buy me a computer.
高考英语复习名词性从句十大考点及热点问题教案
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。
名词性从句七大考点
It doesn’t matter whether…
第八页，共32页
It is well known/reported/ thought/said that…
第四页，共32页
B : what (什么) / which ( 表选择, 哪一 个)
1. ---Do you know_w__h__a_t__Mr Black’s
address is ?
---He may live at No. 18 or No. 19 of Bridge
Street. I’m not sure of __w__h_i_c_h__.
B. what our village looks like C. how does our village look like
D. how our village looks like
第十三页，共32页
❖2.You can hardly imagine ______when he heard the news .
China. （非限制性定语从句） A. As B. That C. Which D.What
2. It is known to all____ Taiwan is only part of China.
A. as B. that C. if D. for
3. It was on Sunday ___ I met him. （强调句） A. that B.when C. what D.which
第二十二页，共32页
高考题选萃
1.____ has helped to save the drowning girl is worth praising.
高考英语名词性从句六大考点讲解及练习
⾼考英语名词性从句六⼤考点讲解及练习⾼考名词性从句考点主要有以下六个⽅⾯:考点之⼀:考查名词性从句中that与what的区别考点之⼆:考查名词性从句中的it作形式主语或形式宾语考例1: _______ is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It分析:在这种名词性从句中为了保持句⼦的平衡,往往⽤先⾏词it作形式主语或形式宾语,⽽把真正的主语或宾语放到后⾯,尤其是that引导的主语从句往往⽤先⾏词it作形式主语.此句也可以改写为:That English is being accepted as an international language is a fact.考例2: I hate _______ when people talk with their mouths full.A. itB. thatC. thisD. them分析:此题考查的是⽤先⾏词it作形式宾语,⽽把真正的宾语从句放到后⾯.其他⼏个词均不能作形式宾语.考点之三:考查名词性从句的语序考例3:The photographs will show you _______ .A. what does our village look likeB. what our village looks likeC. how does our village look likeD. how our village looks like考点之四:考查名词性从句中的whether, if以及that的区别考例4: _______ we'll go camping tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where分析:句⼦的意思是:我们明天是否去野营要视天⽓⽽定.whether与if当"是否"讲时的区别是:在引导宾语从句时两者可以互换,但在引导主语从句、表语从句和同位语从句以及介词后⾯的宾语从句或后⾯紧跟or not时通常只能⽤whether,⽽不能⽤if.考例5: What the doctors really doubt is _______ my mother will recover from the serious disease soon.A. whenB. howD. why分析:本题句⼦的意思是:医⽣真正怀疑的是我母亲是否能很快从重病中恢复过来.whethe r引导的是表语从句.It worried her a bit _______ her hair was turning gray.A. whileB. thatC. ifD. for考点之五:考查名词性从句中的疑问词+ever引导的名词性从句及其与no matter+疑问词引导的从句的区别考例6 :It is generally considered unwise to give a child _______ he or she wants.A. howeverB. whateverC. whicheverD. whenever分析:本题句⼦的意思是:⼀般认为孩⼦要什么就给什么是不明智的.whatever引导的是宾语从句,A. however 和D. whenever是不能作宾语的;⽽C. whichever表⽰"⽆论哪⼀个、⽆论哪些",表⽰在⼀定范围内的⼈或事物,此处并不涉及"⼀定范围内的⼈或事物",所以也不能选.考例7: Sarah hopes to become a friend of ______ shares her interests.A. anyoneB. whomeverC. whoeverD. no matter who分析:本题句⼦的意思是:萨拉希望跟⾃⼰有共同爱好的⼈交朋友.疑问词+ever引导的名词性从句与no matter+疑问词引导的从句的区别是:前者既可以引导名词性从句也可以引导让步状语从句;后者只能引导让步状语从句.⾸先排除D.⽽选A. anyone则应在其后加who.从句中需要的是主语,所以whomever也不⾏.考点之六:考查名词性从句的虚拟语⽓问题考例8 :It is necessary that a college student ______ at least a foreign language.A. mastersB. should masterC. masteredD. will master分析:句⼦的意思是:⼤学⽣⾄少应该掌握⼀门外语。
名词性从句考点
What's the matter is known to all.
4）It......+that/whether/wh-... It is undoubted. that Taiwan belongs to China. It is a question. whether he should get married. He
6)如果宾语从句后还有宾语补 足语，则必须用 it 作形式宾语 ，而将宾语从句后置，并且 that不能省略。
He has made it clear that he will not give in.
doubt用肯定结构时，后用 whether/ if 引导名词性从句；用 否定或疑问结构时，后用 that 引导。 be sure 用肯定或疑问句时，后 that 引导的名词性从句；用否定 句时，后接whether/if 引导。
people. A. That B. What C. Which D. This
B has been announced that we shall have _ our final exam next month. A. As B. It C. What D. That _ Acaused the accident is still a complete mystery. A. What B. That C. How D. Where
引导名词性从句的关联词
连接代词 who, whom, whose, which, what, whatever
连接副词 how, why, when, where however, wherever 连接词 that, whether, if, because as if /as though
考点08 名词性从句(核心考点精讲精练)(原题版)
考点08 名词性从句（核心考点精讲精练）【近年真题考点分布】【思维导图】【知识梳理】➢考点一：宾语从句1．宾语从句的引导词She asked me whether I had returned the books to the library，and I admitted that I hadn't.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。
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。
名词性从句
名词性从句1.名词性从句种类及作用1）由从属连词that引导的从句叫做名词性that-从句。
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、同位语和形容词宾语。
例如：主语：That he is still alive is sheer luck.他还活着全靠运气。
宾语：John said that he was leaving for London on Wednesday.约翰说他星期三要到伦敦去。
表语：The fact is that he has not been seen recently. 事实是近来谁也没有见过他。
同位语：The fact that he has not been seen recently disturbs everyone in his office.近来谁也没有见过他，这一情况令办公室所有的人不安。
形容词宾语：I am glad that you are satisfied with your job. 你对工作满意我感到很高兴。
2）That-从句作主语通常用it作先行词，而将that-从句置于句末。
例如：It is quite clear that the whole project is doomed to failure.很清楚，整个计划注定要失败。
It's a pity that you should have to leave.你非走不可真是件憾事。
用it作形式主语的that-从句有以下四种不同的搭配关系：a. It + be +形容词+ that-从句It is necessary that…It is important that…It is obvious that…b. It + be + -ed 分词+ that-从句It is believed that…It is known to all that…It has been decided that…c. It + be +名词+ that-从句It is common knowledge that…It is a surprise that…It is a fact that…d. It +不及物动词+ that-分句It appears that…It ha ppens that…It occurred to me that…II. if, whether引导的名词从句从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同。
名词性从句的常考点和易错点
too l is out o f shape.因为被用了很长时间,这个工具变形了。
After the traffic accident,his right hand was o ut of shape.交通事故之后,他的右手改变了形状。
巩固性练习:1.The middle-aged wo man dared not go therealone at night(因为害怕).2.Pay attention!Yo u are(步子乱了).3.When the kite is(失去控制),it w ill certainly dro p.4.Wo rk hard,otherwise y ou w ill soon be(失业).5.I’m sure the patient will finally be(脱险).6.It is said that he is(没有钱).7.M any students liv e(在……外面)the scho ol at present.8.The bell rang and the students walked(从……里出来)the room.9.You can choose o ne(从……里)the ten students.10.She didn’t turn back until her guest was(看不见).11.He ran so fast that he was soo n(上气不接下气).12.His ring w as(变形)in the terrible big fire.Keys:1.out o f fear 2.out of step3.out o f co ntro l 4.out o f w ork 5.out of danger 6. o ut o f mo ney7.out of8.out of9.o ut o f 10.out of sig ht11.out of breath12.o ut o f shape!名词性从句的常考点和易错点"河北省乐亭县第二中学崔秀芬名词性从句是高考必考的内容之一,它的难点在于连词的正确使用和从句类型的判别。
07.名词性从句-高考英语一轮复习语法知识
类似的可用于该结构的词还有:a pity、a wonder、a good thing、no wonder、a surprise等。 It is good news that our team has won the championship. It is a pity that I have missed a wonderful boxing match.
名词性从句
考点1 引导词 【考题再现】 ①(2024·蚌埠模拟) Beijing will carry out measures to help bridge _w__h_a_t_has become a digital divide for many older people to make sure they share in the benefits of a smart society. ②(2024·芜湖模拟) Many of us read poetry simply because we often feel depressed and hopelessly lost, and in poetry we see __h_o_w__beautiful and strange everything is. ③(2024·北京丰台模拟) To improve efficiency, a tea-picking robot was made and it is in trial operation now.It can position _w__h_e_r_e_the target bud and leaf are and cut them precisely.
【要点巩固】 ①(2024·河南联考) __W__h_a_t_makes the Qatar World Cup unique is the kind of technology China is providing. ②(2024·韶关模拟) But _w__h_a_t_was pleasantly surprising was that the lingering fragrance of the tea and the crunchy texture of the shrimp won the emperor over. ③(2024·潮州模拟) The scientists believe _w__h_a_t_caused whales to get so large was a change in the Earth’s climate only about 3 million years ago.
名词性从句考点整理
名词性从句考点整理●主语从句(谓语动词前)●定义●连接词(一定名从，二析成分，三看句意)●从属连词:that, whether●不充当成分●不可省略●that三无●whether是否，句首句尾都可●连接代词:Who(ever), what(ever), which(ever)●在从句中充当主宾表定●连接副词:when, where, how, why●在从句中充当状语●根据语境选用●主语从句的后置●it+be+表语+主从●it+不及物动词+主从●it+及物动词被动+主从●宾语从句(动词，介词后)●定义●用that引导的情况●that的省略●that可省:从句紧挨谓语动词●that不可省:从句不紧挨谓语动词●主语+及物动词+to sb. +that从句●it作形宾，用taht引导宾从●主+系+adj+that从句●宾从的陈述语序●主语+及物动词+连接代词/副词引导的宾从用陈述语序●宾从的否定转移●第一人称有想法(think, consider, suppose, believe…), 宾从否定要转移●做题时注意句子翻译时记得把否定翻译回去●宾从的反义疑问●前肯后否，前否后肯●(主句)一人称，就从句●否定转移时的反义疑问:一人称有想法，就从句用肯定●表语从句(系动词后)●连接词:as if , because●一般结构:主系表●其他结构:●The reason… is that…●That is because…●That is why…●同位语从句(抽象名词后)●定义:抽象名词后说明解释该名词的具体内容●连接词:●同位从不用which●taht从句有时不紧挨抽象名词●同位从和定从辨析●同位从:that为连词，不当成分●定从:that为关系代词，充当主宾表。
英语名词性从句知识点
名词性从句复习要点【考点1】名词性从句中连接词的运用：连接代词：what ，who，which，whose，whatever，whoever，whomever，whichever连接副词：where / when / why / how / wherever / whenever，that，whetherEverything depends on whether you have enough time.No one knows what our life will be like in the future.The reason why he was late was that he took the wrong bus.【考点2】that的用法①主语从句、表语从句、同位语从句中用that但不能省略。
如：That they are good at English is known to us all.The problem is that we don’t have enough money.They expressed the hope that they would come to visit China again.(同位语从句)The hope she expressed is that they would come to visit China again.（定语从句）②宾语从句中的连接词that有时可省有时又不可省，在以下几种情况中that不能省略：（A）当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时，that 不可省略；（B）当两个并列的宾语从句同时作宾语时，第二个that不能省；（C）当that 作介词宾语时，that不可省掉。
如：He judged that, because he was a child, he did not understand wineEveryone knew what happened and that she was worried.The reason lies in that she works harder than the others do.③that从句作主语和宾语时，可以用it 来替换成以下几种结构表达。
高中英语语法专攻-《名词性从句》
高中英语语法专攻-《名词性从句》【考点1-引导词】【考点2-主语从句】①定义：主语从句是指在复合句中充当主语的句子，它是名词的拓展，属于主语的第三个表达层次。
所以，主语从句和名词一样通常是出现在谓语动词的前面。
②主语从句的引导词：从属连词：that、whether、if（不可位于句首）连接代词：what, whatever/who, whoever/whom, whomever/whose,whosever/which,whichever连接副词：when, whenever/where,wherever/how, however/whythat引导主语从句（that无含义，在句中不作成分，不可省略）That youth is wholly experimental is known to us all。
众所周知，青春就是探索的岁月。
That she finished reading an English novel surprised us all.她读完了一部全英文小说让我们惊讶That you will win the medal seems unlikely.你赢得奖牌似乎是不可能的。
That he is still alive is a wonder.他还活着，真是奇迹。
That we shall be late is certain.我们要晚了，这是确定无疑的。
That she is still alive is a consolation.她还活着是使人感到宽慰的。
Whether引导主语从句（whether有含义“是否”，在句中不作成分，不可省）Whether she will come to the party makes no difference.她来不来参加聚会都没有关系。
It makes no difference whether/if she will come to the party.Whether he is coming or not doesn’t matter too much.他来或不来都不怎么重要It doesn’t matter too much whether he is coming or not.Who,whom, what, which,whose（连接代词）引导主语从句（连接代词有含义，在句中起名词性作用，担当一定成分）Who will be the leader of the team has not been decided yet.谁会成为这个队的领头人还没定下来。
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专题九名词性从句常考点在复合句中起名词作用的从句叫作名词性从句。
它包括主语从句、宾语从句、同位语从句和表语从句。
名词性从句是英语中的一个重要语法项目，在历年的高考中几乎都涉及到。
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。
1It is...和There is...It is...句型中it为形式主语，真正的主语为动名词、不定式或从句，而There is意为“有……”，有时be也可以用exist，remain等替代。
用it，there填空：①________ is a pity that he was absent.②________ is a fact that he has lied to you.③________ is no wonder that he is so excited.④________ is no need to worry about it.⑤________ is no sense/point (in) arguing with him.⑥________ is no doubt that he has gone.【答案】①It ②It ③It ④There ⑤There ⑥There2从句作主语时的谓语动词形式主语从句作主语相当于第三人称单数作主语，谓语动词用单数；如果由and连接两个或两个以上的主语从句作主语时，谓语动词用复数；由两个或多个连接词引导一个主语从句，谓语动词用单数。
用所给词的适当形式填空：①That the president is coming ________(excite) all of us.②How close parents are to their children ________(have) a strong influence on their character.③When and where the meeting will be held __________(not decide) yet.【答案】①excites ②has ③isn't decided/hasn't been decided3宾语从句的时态和语序宾语从句中的时态要注意呼应。
当主句中的谓语是现在时，从句根据自身的句子情况，而使用不同的时态。
当主句中的谓语是过去时态，从句则要用相应的过去时态(如一般过去时，过去进行时，过去将来时等)；当从句表示的是客观真理、科学真理、自然现象，则从句仍用现在时态.宾语从句语序要用陈述语序(what is/was the matter除外)。
①The photographs will show you ________．A. what does our village look likeB. what our village looks likeC. how does our village look likeD. how our village looks like②Someone is ringing the doorbell. Go and see ________．A. who is heB. who he isC. who is itD. who it is③Hello，I didn't know you _____(be) in London. How long haveyou been here?④I thought he ________(be) coming tomorrow.⑤The teacher told us that light _______(travel) at a very high speed.【答案】①B ②D ③were ④was ⑤travels4表语从句中的常见句型常用的句型有：The reason is that...；It is because...；That's why...；That's where...。
完成下列句子：①The reason ______ he is absent from school is ________ he is ill.＝He is ill. That's ________ he is absent from school.＝He is absent from school. That's ________ he is ill.②The reason ____ he gave was ___ he was caught in the traffic jam.③That's ____ I disagree/the problem lies/I have doubt/you aremistaken.That's ________ I disagree about/the problem lies in/I have doubt about/you are mistaken about.【答案】①why；that；why；because ②which；that/不填③where；what5同位语从句和定语从句的辨别同位语从句就是在复合句中作名词的同位语的名词性从句。
连接词that引导同位语从句时，应在某些抽象名词之后，如：fact，hope，story，thought，suggestion，idea，news，possibility，feeling，doubt，truth，wish，word(消息)，request，information，order，message 等，对前面的名词起补充说明的作用。
同位语从句有时可以不紧跟在它所说明的名词后面，而是被别的词隔开。
定语从句中的that是关系代词，既起引导从句的作用，同时又在从句中充当主语或宾语，而同位语从句中的that是连词，只起连接主句与从句的作用，不充当句中任何成分。
完成下列句子：①The news ________ he told us excited us.The news ________ our team won the game excited us.②The fact ________ he collected was surprising.The fact ________ he said nothing was surprising.③There is a chance/possibility ________ he will lose the game.＝________ are that he will lose the game.④Information has been put forward ________ more middle schoolgraduates will be admitted into universities.【答案】①that/which/不填；that ②that/which/不填；that③that；Chances ④that6what和that的用法①what可引导主语从句、宾语从句和表语从句，并且替代名词性从句中所缺的主语、宾语或表语(尤其注意what引导的从句作介词宾语)，相当于“名词或代词＋that/which”；另外what不能引导定语从句。
②that在名词性从句中只引导从句，不充当成分。
如：That he said nothing at the meeting surprised us.[注]介词后不接that从句，除了in that...和except that...。
that引导两个以上的宾语从句，第一个that可省略，其后的that都不可省略。
that引导主语从句、表语从句和同位语从句时，that不可省。
完成下列句子：①The school is no longer ________ it used to be.＝The school is no longer the one________ it used to be.②Finally he told us everything ________ he had seen.＝Finally he told us ________ he had seen.③They arrived in ________ was once a school.＝They arrive in the place ________ was once a school.④Don't care ________ others think about you.⑤Do you know ________ they do with waste paper?【答案】①what；that ②that；what ③what；that/which④what ⑤what7whether和if的区别以及whether和that的区别1. if和whether都可译为“是否”，两者引导宾语从句时通常可以互相替换。
而以下几种情况中，只能用whether，不能用if：①强调两方面的选择，特别是句中有or not时。
如：Let me know whether you can come or not.②宾语从句前置时。
如：Whether this is true，I can't say.③引导主语、表语、同位语从句时。
如：Whether the football game will be played depends on the weather.(主语从句)The question is whether he can do it. (表语从句)The question whether we should go with them must bedecided at once. (同位语从句)④在介词之后作宾语时。
如：I haven't settled the question of whether I'll go back home.Whether we will go there depends on whether it is going to rain.⑤在不定式前与不定式一起组成短语时。
如：Whether to go or stay is still a question.[注]if可以引导条件状语从句，有“假如；如果”之意，而whether 可以引导让步状语从句，有“不管；无论”之意。