名词性从句1

名词性从句讲义一. 名词性从句在句子中起名词性作用的从句叫做名词性从句(Noun Clauses). 名词性从句在句中的作用相当于名词或名词短语, 在复合句中担当主语, 宾语, 表语和同位语等. 因此根据它在句中不同的语法功能可分为: 主语从句, 宾语从句, 表语从句和同位语从句.引导名词性从句的连接词可分为三种:连接词: that, whether, if (不在从句中做任何成分)连接代词: what, who, whom, which, whose和wh+ever (通常在从句中做主语,宾语,表语等) 连接副词: when, where, why, how以及wh/h+ever(通常在从句中做状语)二.主语从句1.概念: 主语从句是在复合句中充当主语的从句.2.连接词:that只起连接主句和从句的作用,在从句中不担任任何成分,本身没有词义,不可省略whether 连接主句和从句, 在从句中不担任任何成分, 但本身有选择或是否的含义whether与if 区别〔一〕引导宾语从句，一般既可用whether 也可用if。

但1 or not放在whether之后时，只能用whether 不用if。

I don’t know whether or not he will come. 我不知道他是不是回来。

注1：如果or not放在whether所引导的从句句尾，那么可以用if来替换。

I don’t know whether/if he will come or not.我不知道他是不是回来。

2 在强调任意选择时,用whether…or,此时不用if替换whether。

He asked me whether I wanted to go there by train or by bus.他问我是想乘火车还是坐公共汽车去那里。

注：whether和or一起还有“不管〞之意,引导让步状语从句。

Whether he drives or takes the train, he will be here on time.不管开车来还是乘火车来，他都会准时到。

名词性从句(1)一、名词性从句1．—What impresses you most when you visit the Acropolis ?— ________ it is that has brought the grand palace into today's terrible scene.A. WhereB. WhatC. HowD. When【答案】 B【解析】【分析】句意：——当你参观雅典卫城时，你印象最深的是什么？——使我印象最深的是什么将从前宏伟的宫殿变成了今天惨不忍睹的样子。

强调句型的特殊疑问句式：疑问词（如what） is it that+其它，本句强调的是什么使得从前宏伟的宫殿蜕变的，所以用表示内容的what，选B【点评】考查主语从句和强调句，本题强调主语从句的引导词。

2．Some people believe _______ has happened before or is happening now will repeat itself in the future.A. whateverB. wheneverC. whereverD. no matter what【答案】 A【解析】【分析】句意：一些人认为之前发生的或现在正在发生的任何事情在将来都会重复发生。

Whatever has happened before or is happening now是一个主语从句，whatever既引导起这个主语从句，也在句中做主语。

BC项都属于副词的性质，都不能做主语，通常只能做状语；no matter what只能用来引导状语从句，故选A。

【点评】考查名词性从句，本题涉及"特殊疑问词+ever"引导的主语从句。

3． is even more important is the earth cooled down, water began to appear on its surface.A. When; that; whenB. What; whether; asC. What; that; asD. lt; whether; as 【答案】 C【解析】【分析】这题考查从句的用法，第一空填what引导主语从句，在主语从句中what做主语，第二空填that引导表语从句，在表语从句中，as是引导时间状语从句，句意是：甚至更重要的是：随着地球的冷却，水开始出现在表面。

名词性从句（1）一、名词性从句分类名词可做：主语，宾语，表语，同位语What you said is right. 主语从句I totally agree with what you said. 宾语从句The fact is that he refused our plan 表语从句The fact that he refused our plan annoyed us. 同位语从句指同一件事情二、引导名词性从句的连接词That：定于从句中：有成分，主语宾语表语。

（先行词后的that）名词性从句：无成分，可以省略What：不用于定于从句，名词性从句中很活跃。

What=先行词+thatA1. Railway is to transportation 状语_____ blood is to a man’s body状语. 缺表语，用whatA. whatB. thatC. howD. whereA is toB whatC is toD A对B的作用相当于C对D的作用D2. Our factory is much more productive now. This year’s production is five times状语_____ it was ten years ago. 缺表语A. whatB. thanC. thatD. as三、whatever, whoever, whichever等词的用法1.疑问词；陈述语气B3. A bigmouth is _______ in English as a talkative person.A. known who it isB. whoever is knownC. known whoever it isD. who is knownA4. All of them agreed to accept ______ they thought was the best at playing football,A. whateverB. whicheverC. whomeverD. whoeverB5. --- Is there any particular seafood you would like to have?--- ________ you select is all right with us.A. WhichB. WhateverC. ThatD. All whatD6. ______ volunteers for blood donation shall, as the president has promised, take a two-week holiday.A. WhoB. AnyoneC. Those whoD. WhoeverB7. I have several current magazines with me. You can take ______ you like most.A. whichB. whicheverC. whateverD. what。

名词性从句名词性从句指在主句中起名词作用的从句，主要包括主语从句、宾语从句、表语从句与同位语从句。

（一）主语从句（妙记用法：整个句子作主语，后面紧跟单谓词；陈述句莫忘加that，语序均同陈述句）在主句中其主语作用的从句称为主语从句。

连接主语从句的连接词主要有三类：从属连词、连接代词和连接副词。

从属连词主要有that, whether,他们在从句中不作任何成分。

连接代词在从句中起名词的作用，作主语、宾语、表语、定语等。

连接副词在从句中起副词的作用，作状语。

1. that 引导主语从句常置于句首，从属连词that在主句中不作任何成分，也没有实际意义，只起连接从句的作用。

That he will come to the conference has excited every one of us.他要来参加会议使我们每一个人都十分激动。

That in some countries women are still treated unequally is unfair.在一些国家妇女仍然受到不平等对待是不公平的。

2. it 可代替主语从句至于句首作形式主语，常见的it替代主语从句的句式主要有:(1)It + 系动词+ 形容词（necessary，right，likely，unlikely，wrong，important，certain，clear，obvious，strange，natural等）+ that从句。

It is certain that the farmers have brought in more money by all means。

很明确大多数农民通过各种方式赚了更多钱。

注意：在“It is necessary，important，strange，natural+ that从句”结构中，从句常用“（should+）动词原形”形式。

It is necessary and important that one（should）master the skill of operating computer so as to meet the need of a job.为了找工作，每个人都掌握电脑操作技巧是很有必要并且很重要的。

《英语周报》高考二轮复习——语法项目讲解与练习名词性从句一、名词性从句概述二、名词性从句要点1.主语从句1）that 从句位于句首时，that 不能省略。

如：That theory must go hand in hand with practice is a principle we should always keep in mind.2）主语从句可放在句首，也可放在句尾（用it 作形式主语），但后一种结构用得多一些。

如：Whoever thought of that idea is a genius.It’s strange that she never mentioned the wedding.2.宾语从句1）当宾语从句后有宾语补足语时，需要用it 作形式宾语，而将宾语从句后置。

如：I remember I made it quite clear to you that I was not coming.2）当主句的主语是第一人称，且谓语为think, believe, suppose, expect 等动词时，如果宾语从句表示否定意思，通常否定前移，即否定主句的谓语。

如：I don’t think there’s a computer store in the town.I don’t believe that she’s ever been to Hong Kong.3）宾语从句亦可用作介词或形容词的宾语。

如：She was never satisfied with what she had achieved.I’m not sure when I saw her last.4）引导宾语从句的连词that 在口语中可省略，但在下列情况中，that 需保留：a.主、从句之间有表示时间等的状语时that 不能省略，否则会产生歧义。

如：She said last night that she did some reading.b.主、从句之间有插入语时不可省去that。

名词性从句 1名词性从句：在句子中起到一个名词的作用，并充当句子的主语、宾语、表语或同位语的从句。

分别称之为主语从句、表语从句、宾语从句和同位语从句。

了解并正确使用关联词是写好名词性从句的关键。

判断依据：看在从句中有无具体意义；看在从句中有无充当成分。

如有，是充当什么成分常见的关联词：which, how, why, whenever, what, whether who, when, whom, whose, that ，whatever, whoever, where, whomever, wherever，whichever，if ，however、名词性从句的关联词的分类、词义和用法见下表：that what连词that 只起连接作用，在从句中不作成分，不含有疑问意义，而what 在从句中作成分，常含有疑问意义。

表“⋯的东西/事情/样子/的话/的地方”，在从句中充当主语、宾语、表语。

主语从句、表语从句、同位语从句中用that 但不能省略。

1.I wonder if this is you are looking for.2.Our school is quite different from it was before.3.Father made a promise __ if I passed the examination he would buy me a computer.I can ' t understand is why he has changed his mind.earth is round is known to us all.6.Is __ he told us true7.I have no doubt _ he will come.8.I have no idea he did that afternoon.三、w ho 与whoever ；what 与whateverwhoever, whatever 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，而who, what 等引导的名词性从句都含有疑问意义。

【英语】名词性从句经典例题(1)一、名词性从句1．_______ caused the accident has not been found out yet.A. WhatB. WhichC. The thingD. That【答案】 A【解析】【分析】句意：造成事故的原因还没有查明。

此处为主语从句，从句中缺少主语，应该用what引导，故答案为A。

【点评】考查主语从句。

以及what的含义。

2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. which; that【答案】 C【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。

第一空为宾语从句，从句结构完整用that起连接作用，第二空为主语从句，从句中consider缺少宾语，应该用what，故选C。

【点评】考查名词性从句，本题涉及that引导的宾语从句和what引导的主语从句。

3．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。

本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。

【英语】名词性从句经典1一、名词性从句1．I wonder .A. how will you celebrate ThanksgivingB. that the Water Festival is really fun.C. what do people eat on the Mid-Autumn FestivalD. whether you will make resolution on New Year's Day【答案】 D【解析】【分析】句意：我想知道你是否将在新年做决定。

A. how will you celebrate Thanksgiving你要怎样庆祝感恩节；B. that the Water Festival is really fun. 泼水节真的有趣；C. what do people eat on the Mid-Autumn Festival中秋节人们叫什么？D. whether you will make resolution on New Year's Day你是否会在新年做决定。

Wonder后跟的是宾语从句，宾语从句要用陈述语序。

A，C错了。

Wonder：对……感到疑惑，想知道，后常跟一个含有“疑问”意义的宾语从句，B错。

故选D。

2．___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. That; why【答案】 C【解析】【分析】句意：最让我吃惊的是那个女孩通过了驾驶考试。

___ surprised me most是一个主语从句，从句中缺少主语，故填what；____the girl passed the driver test 是一个表语从句，句中不缺少成分，故填that。

因此选C。

【点评】考查名词性从句，本题涉及what引导的主语从句和that引导的表语从句。

名词性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1：that：在从句中不充当成分，但除了宾语从句中可省略外，其他三种从句中不能省略2：if和whether表示“是否”，但除了宾语从句中，其他三种从句中常用whether 3：在句子中充当成分的连词有：连接代词：what ,who ,which, whatever ,whoever ,whichever连接副词：when ,where ,how ,why二：形式主语和形式宾语“it”的用法1;在主语从句中常用it作形式主语，而把真正的主语从句放到后面例如：That air has pressure was known long ago 可该为It was known long ago that air has pressur e2;在宾语从句后有宾补时，要用it作形式宾语，而把宾语从句放在宾补之后I think it necessary that he should do the test三：同位语从句和定语从句的区别某些含有一定内容的词例如：fact ,idea ,news ,hope ,thought ,promise ,suggestion ,belief ,doubt ,truth ,order ,dem and 等词之后，that所引导的从句假如说明的是前面那个词所代表的内容，而且that 在从句中不充当成分，那这个从句就是同位语从句. 假如that在从句中充当成分，就是定语从句例如：They were surprised at the fact that china did it all on its own(同位语从句) The facts that she had collected was enough to prove his guilt （定语从句）错题重做1.He made the suggestion _____________________________(他们做的工作理应受到感谢)(acknowledge)2.Stephen Hawking tells readers ________________________________(发现是如何产生的)and how they change the world (discovery)3.__________________(她想知道的)is ___________________________(究竟啥时候)I could finish writing the report (it)4.The good thing about children is __________________________________(他们很容易适应)new environment (adapt)5.These wild flowers are so special that I would like to do __________________(如何我能能做的)save them (can)6.It does not matter that you are late and ___________________(真正重要的)is_______________________(你现在在这) (count)7._________________________________(无论谁最后离开教室)ought to turn offthe lights (leave)8.__________________________________(无论哪一个学生最后离开教室)oughtto turn off the lights (leave)9._______________________________________(我们和她争论)was the price ofmeal (argue)10.________________________________________(他昨晚熬夜)has already madehis parents angry (stay)11.________________________________(我突然想到)she had gone to Canada(occur)12.___________________________(一个人出生在何地)and (一个人长得啥样)isnot as important as what he or she grows up to be (look)13.It is strange ________________________________(他竟然考试不及格) (fail)14.________________________________(还有待观察)whether they will support us(see)15.I can not understand ________________________________________(究竟是什么使得那个女的改变她的主意)(make)16.I do not know_____________________________(究竟把钥匙放在哪了) (put)17.Can you tell me ______________________________(你究竟是在啥时钱让人偷了)(steal)?18._________________________(台湾属于中国)has always been a fact_______________(不能否认)(belong, deny )19._______________________(昨天无论发生了啥事)has nothing to do with me(happen)20.You can not shut your eyes to the fact ______________________(他所说的是对的)(say)21.You have no idea __________________________________________(有多困难满足)all the needs especially in such a serious condition (meet)22.______________________________(他无论接受还是拒绝)the present is noneof your business(accept)23.I can not imagine____________________________(我的生活将会咋样)withouta friend like you (life)24.______________________________________________(刘翔退赛)surprised allof us (race)25._______________________________(已报道)that _____________________(如何生活贫困的人)will receive a certain sum of money from the government each month (poverty)26._______________________________________(给我印象最深的)was that theyhad never lost heart (impress)27._____________________________________________(我从父亲身上所学到的)helped me see my life with a brighter and more positive attitude (learn)28.Staff in the United Nations are proud of _____________________________(他们为。

名词性从句一．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、表语从句、宾语从句和同位语从句。

二．名词性从句连接词四．if, whether的区别1.引导主语从句时，如果主语从句放在句首，只能用whether不能用if引导，但是如果用it 做形式主语，而把主语从句放在句末时，也可以用if引导.2.引导宾语从句时常放在动词know, ask, care, wonder之后，if和whether均可。

少数动词，如: leave, put, discuss, doubt后的宾语从句常用whether. 。

3.在介词后面的宾语从句中，在表语从句、同位语从句中，表“是否”，只能用whether；4.whether和if都可以和or not连用,但是whether 之后可以直接跟or not,而if不可以。

I do n’t know whether or not I will stay.（只能用whether）5.在不定式前只能用whether.如：I can’t decide whether to stay. 我不能决定是否留下。

五．与“命令、要求、建议”等相关的名词性从句中通常用虚拟语气，虚拟语气的构成是“should＋动词原形”或省去should，直接用动词原形。

六．名词性从句以考查引导词为主，同时考查时态，语序，与其它从句的区别以及混同虚拟语气的考查。

一．主语从句1.主语从句定义：在复合句中充当主语的句子叫做主语从句。

That he will succeed is certain.Whether wild life can be well protected is of great importance.Who will go makes no different.Which kind of food is the best is still not certain.What is needed for the space trip is careful preparation.Whoever comes is welcome.How we can help the twins will be discussed at the meeting.When they’ll start the project has not been decided yet.Where he hid the money is to be found out.Why dinosaurs died out remains a puzzle.2.主语从句引导词按照在句中是否做成分主要分为三类：连词that、whether、if 连接代词、连接副词。

1. 名词性从句是高考重点考查的知识点：2. 本讲具体到考核目标与要求为：1)主语从句、表语从句和宾语从句的基本用法。

2)it作形式主语、宾语的情况。

3)what，that引导的名词性从句的区别。

3. 名词性从句在高考单项选择题中一般约占2-3分，但在书面表达中也会考查考生正确运用名词性从句来表达意思的能力。

点拨一、知识精讲（一）名词性从句中连接词的运用名词性从句包括：主语从句、宾语从句、表语从句、同位语从句。

名词性从句中的连接词有三类：连词：that / whether / as if（不充当从句的任何成分）代词：what / who/ which / whose / whatever / whoever / whomever / whichever副词：where / when / why / how / wherever / whenever（二）主语从句1. 作用：整个句子作主句的主语2. 连接词：连词that (不可省),whether;代词：who, what ,which;副词：when ,where, how, why 等3. 结构：（1）连词+从句+谓语+主句（2）It +谓语+连词+从句【例句】结构1：When he will go to America is not yet fixed.How we can help the twins will be discussed at the meeting.That he works very hard is known to all.结构2：It is reported that 10 people were killed in the accident.4. 主语从句中的that没有词义，在句中也不作任何成分，但不可以省略。

【例句】That he succeeded in the competition made us happy.状元典例________ the boy didn't take medicine made his mother angry.A. ThatB. WhatC. HowD. 不填答案：A思路分析：句意为：这个孩子不吃药让他妈妈很生气。