【语法】高考英语名词性从句十大考点全攻略
高考英语语法填空之名词性从句
高考英语语法填空之名词性从句一：知识储备1．确定是名词性从句设空处无提示词，先确定主句主谓结构；再确定设空和设空后的内容在主句中充当主语、宾语、表语或同位语。
2．利用2个技巧搞定名词性从句技巧1分析句子成分①缺少主语、宾语、表语：用连接代词what，who，whom，which，whatever，whose等。
②缺少状语(结合句意判断)：用连接副词where(表地点)，when(表时间)，how(表方式)，why(表原因)等。
③不缺成分，句意缺少“是否”：用if/whether。
④不缺成分且句子意义完整：用that。
技巧2句意语境巧解题有些引导词在句中有很鲜明的意义，如if“如果”，whoever“无论谁”，whatever“无论什么”，because“因为”，why“为什么”等。
结合句意翻译和语境，不难解决这类试题。
3．牢记what和that的区别①that没有词义，也不做任何成分，当从句意义完整，不缺任何成分时用that；②What在从句中表示“……的(东西)”(有时候可以不译)，在从句中充当主语、宾语、表语、定语等成分。
二：真题精析1．By boat is the only way to get here, which is we arrived.2．Every year, makes the most beautiful kite will win a prize in the Kite Festival.3．She asked me I had returned the books to the library, and I admitted that I hadn't.4．Jane moved aimlessly down the tree－lined street, not knowing she was heading.5．Eventually, I decided to follow her and happened truly amazed me.6．I didn't understand this would happen and my credit card had already been charged.7．What students do at college seems to matter much more than they go.8．Scientists have obtained more evidence plastic is finding its way into the human body. 三：课后练习（A）In 1863 the first underground passenger railway in the world opened in London.It ran for just under seven kilometers and allowed people to avoid terrible 1(crowd) on the roads above as they travelled to and 2 work.It took three years to complete and was built using an interesting method.This included digging up the road, 3(lay) the track and then building a strong roof over 4top.When all those had been done,the road surface was replaced.Steam engines 5(use) to pull the carriages and it must have been 6(fair)unpleasant for the passengers,with all the smoke and noise.However,the railway quickly proved to be a great success and within six months,more than 25,000 people were using 7every day.Later,engineers 8(manage) to construct railways in a system of deep tunnels (隧道),which became known as the Tube.This development was only possible with the 9(introduce) of electric-powered engines and lifts.The Central London Railway was one of the most 10(success) of these new lines,and was opened in 1900.It had white-painted tunnels and bright red carriages,and proved extremely popular with the public.（B）My mom was a nurse and often took me along to visit the 1(family) she was caring for,including one who had a series of strokes(中风) and was bedridden.One afternoon Mom told me that we needed to visit the woman 2(give) her medications,and that we would stop at a store 3the way.I thought we would stop at a drugstore,but we pulled up to a shopping mall.My mom 4(head) to the perfume counter and bought the most expensive bottle they offered.She also bought a beautiful nightdress.When I asked her who they were for,she said they were for her patient.She 5 (far) explained although this woman was quite old and bedridden,she was still a lady,and 6old deserved to be treated with respect and grace.When 7(care) for someone,we should look past the disability or the illness and look into the soul of the human,so we can connect them with sympathy.I soon realized that my mom’s greatest 8(strong) was taking care of those who cannot advocate for 9(they) and need trustworthy care providers.Actually,that’s the very reason 10I wanted to become a doctor myself.（C）China is the birthplace of kites.Most people believe they 1(invent) during the Spring and Autumn Period by the famous philosopher Mozi.It is said that he used wood to create a “ 2(fly) bird” that flew in the sky for a whole day.Kites were 3(late) used as military instruments to measure distance,test the wind, aid communication, and rescue people. During the Tang Dynasty, they were used more as a tool for 4(entertain) than a military instrument.At first,only royal family members could play with kites. Later it became popular among commoners who flew them on 5(importance) events and festivals.In the Ming Dynasty, kites were once again used 6military purposes. Many emperors ordered their soldiers to fly kites 7carried explosives.The explosives would fall on the enemy and gave the Chinese a great edge on the battlefield.Nowadays,flying kites has become 8popular form of entertainment and competition.More and more people at home and abroad are fond of flying kites in local or international events 9(show) their kite-making and kite-flying skills.The largest kite museum of the world is in the city of Weifang,10(know) as “Kite Capital of the World”,and every year,kite fans all over the world come to watch and take part in the annual International Kite Festival.。
高中英语知识点归纳名词性从句的特殊用法与考点
高中英语知识点归纳名词性从句的特殊用法与考点高中英语知识点归纳：名词性从句的特殊用法与考点介绍：名词性从句是英语中的一个重要语法要点，它作为一个句子的成分在句中起到名词的作用。
名词性从句的特殊用法及考点在高中的英语学习中经常出现，掌握这些知识点对于提高学生的语言表达能力和理解能力至关重要。
一、名词性从句的特殊用法：1. 作主语：名词性从句可以作为主语出现在句子中，常常使用的引导词是“that”或者是连接代词“wh-”引导的从句。
例如：（1）That he is coming is good news.（2）Whether we will go camping is still undecided.2. 作宾语：名词性从句可以作为及物动词的宾语出现在句子中，常使用的引导词有“that”和连接代词“wh-”。
例如：（1）I believe that you can do it.（2）He asked me how to solve the problem.3. 作表语：名词性从句可以作为句子的表语出现，通常使用引导词“that”或者是连接代词“wh-”。
例如：（1）The truth is that she loves you.（2）The question is whether we should trust him or not.4. 作补语：名词性从句可以作为一些特定动词的补语出现在句子中，常用的引导词有“that”和连接代词“wh-”。
例如：（1）I consider it necessary that we take action.（2）We all hope that he can win the game.5. 作定语：名词性从句可以作为定语修饰一个名词或代词，通常使用的引导词是连接代词“wh-”。
例如：（1）I have no idea which book to choose.（2）The person who told me the news is my best friend.二、名词性从句的考点：1. 名词性从句的语序：名词性从句的语序要遵循主从结构，通常是由从句引导词引导，跟在主句之后。
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。
高考英语语法之名词性从句
1.名词：表示人或事物的名称的词叫名词。 2.名词的句法作用：名词在句中主要作主语、宾 语、表语和同位语。另外还可以作定语、状语。 3.名词性从句： 在英语的句子结构中，本来该由名词充当的主 语、宾语、表语和同位语，由一个句子来充当， 这个句子就叫名词性从句。 4.名词性从句的种类： 根据名词性从句在句子中所充当的不同成分， 名词性从句可以分为主语从句、宾语从句、表 语从句和同位语从句。
2.When he will go to America is not yet fixed.
(It is not yet fixed when he will go to America.)
宾语从句
在复合句中作主句的宾语.引导 词有连词that (that 常可省 略),whether,if; 代词有who, whose,what ,which
表语从句
在复合句中作主句的表语. 引导词有连词that (that 不可 省),whether; 代词有who, what ,which;
副词 when ,where, how, why
等.
The problem is that we didn’t get in touch with him.
This is how Henry solved the problem. His suggestion is that we (should) finish the work at once.
(4).It is not yet decided which cash crop will be produced next year. (5).Whatever he said was right.
(6).Whoever goes there must get ready by 6 o’clock.
高考英语名词性从句解题思路和易混考点归纳（7页）
高考英语名词性从句解题思路和易混考点归纳（7页）高考英语名词性从句解题思路和易混考点归纳名词性从句是高考的一项重要内容，掌握其解题技巧很重要。
考查重点名词性从句有四种：主语从句、宾语从句、表语从句和同位语从句。
其中宾语从句是考查的重点，连接词中which, what, where, when, that, whether是考查的热点。
解题思路1．先找出句子的谓语动词，后根据从句在句中的位置来判断它属于哪一种名词性从句；2．先成分后含义——先分析连接词在从句中的成分，后根据含义直接翻译即可；3．若作主语、宾语、表语、定语等成分，则用what(ever), who(ever), whom(ever), whose, which(ever)引导；4．若不作成分，则用that, if, whether引导，只起连接作用；5.若作状语，则用when(ever), where(ever), why引导。
注意:主语从句常放在主句谓语动词之前，it作形式主语除外；表语从句位于系动词后；宾语从句位于动词或介词后；同位语从句位于名词之后。
经典试题例1In the 1980s young people would only wear was in fashion.解题思路首先，从谓语动词would wear可知，此处缺少宾语，再结合空后的系表成分可知，此处应考查从句，即名词性从句的宾语从句。
分析宾语从句可知，此处缺少引导该从句的连词，且该连词在此作主语成分。
结合句意“在19世纪80年代，年轻人只穿流行的衣服”可知，此处需填what。
例2he is a famous singer is known to us.解题思路首先，分析空后句子成分可，is known才是主句的谓语，由此可以判断“he is a famous singer”是作句子的主语，即考查名词性从句的主语从句且主语从句不缺成分，故需填只起连接作用的That即可。
高考英语名词性从句讲解(最全版)
1、主语从句 ( subject clause ) 2、表语从句 ( predicative clause ) 3、宾语从句 ( object clause )
分类
4、同位语从句 ( appositive clause )
从属连词（3个）：that 、if、 whether 连接代词 （9个）：who、 whom 、 what、 which、 whose、 whoever whomever、 whatever、 whichever、 连接副词（4个）：when、 why、 where、 how
引导词
名词性从句引导词的用法（1）：
从句中的每一个引导词都有3个功能，分别如下:
“that”---无词义、不作成份、起连接作用
从属连词
“if”--- “是否”、不作成份、起连接作用
“whether”---“是否”、不作成份、起连接作 用
“that”---无词义、不作成份、起连接作用
1、That we will realize our dreams in the future is
（宾语从句）
“whose”---“谁的”、作定语、起连接作
用
1、Whose bag was the most beautiful is still （主语从句） unknown now . 2、The question is whose friends could lend me a hand . （表语从句） 3、I want to know whose suggestion is more practical . （宾语从句）
英语名词性从句
Noun Clause
请思考
定语从句的定义：
起定语作用，用来修饰名词或代词的从句。
高中英语2024届高考名词性从句知识分类讲解(主语从句+宾语从句+表语从句+同位语从句)
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。
名词性从句英语语法知识点汇总
名词性从句英语语法知识点汇总名词性从句是在句子中起名词作用的句子。
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。
下面就是小编给大家带来的名词性从句英语语法知识点汇总，希望大家喜欢！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.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.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。
名词性从句十大考点及热点问题整理
名词性从句十大考点及热点问题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。
高考英语名词性从句考点归纳
名词性从句名词性从句指在复合句中起名词作用的从句，它在句子中可作主语、宾语、表语或同位语。
名词性从句既是中学英语教学的重点，也是高考考查的热点。
一、名词性从句的分类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。
其连接词有that, if, whether；连接代词who, what, which；连接副词when, where, how, why等。
考查热点一：对主语从句的考查主语从句在复合句中充当主语，它可以放在主句谓语动词之前。
但为了保持句子平衡，多数情况下可用it作形式主语，而把主语从句置于句尾。
考查热点二：对宾语从句的考查宾语从句在句子中作及物动词或介词的宾语。
如果主句的谓语动词是及物动make, find, see, think等，则把宾语从句置于宾语补足语之后，用it作形式宾语。
另外，某些作表语的形容词，如sure, happy, glad, certain 等之后也可以带宾语从句。
考查热点三：对表语从句的考查表语从句在句子中作表语，位于主句中的系动词之后。
一、什么是表语（predicative）在形式上，位于系动词后的就是表语。
从含义上讲，表语是回答主语“是什么”或“怎么样”的语法成分。
即是指“是”字句“是”字后面的成分。
表语就是起表述作用的句子成分。
它修饰的是主语。
表语是用来说明主语的身份、性质、品性、特征和状态的。
表语须和连系动词一起构成句子的复合谓语。
表语常由名词、形容词、副词、介词短语、不定式、动词的-ing、动词的-ed、从句来充当，它常位于连系动词（be, become, appear, seem等）之后。
Albert Einstein was a famous professor of physics.二、不定式、动名词与分词作表语的区别不定式和动名词作表语相当于一个名词作表语，含义是回答主语“是什么”；分词作表语相当于形容词作表语，含义是回答主语“怎么样”。
(完整版)高中英语语法总结-名词性从句
名词性从句在句子中起名词作用的句子叫名词性从句 (Noun Clauses)。
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。
第一节知识点讲解顾名思义，主语从句在句子中作主语。
有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾部，前面用形式主语 it 代替。
从句作主语时，谓语动词一般为单数形式。
如 :What I saw was beyond any verbal description.That his hair was turning grey worried him a bit.Why the company denied the contract is still unknown.When and where the government will build a city square is under discussion.It is pretty annoying that a small part of the machine is missing.It remains to be seen whether the new novel will be well received.Tips: 主语从句的 that 绝对不能省去。
因为句子是不能做主语的，故用 that 引导。
若去掉则没有了主语，而宾语从句的 that 可省。
主语从句： That he is right is known to all of us.宾语从句： We all know (that) he is right.1.It 作形式主语和 it 引导强调句的比较It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。
而 it 引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。
高考名词性从句知识点总结
名词性从句主语从句宾语从句名词性从句表语从句同位语从句以that引导以whether/if引导名词性从句结构以特殊疑问句引导以what或wh-ever等连接代词引导（名词性关系从句）一、主语从句1.以that引导的主语从句That从句作主语时，常用it作形式主语①it + be + 形容词（obvious, true, natural, surprising, good, wonderful,funny, possible, likely, certain, probable…）+ that从句②it + be + 名词词组（no wonder, an honor, a good thing, a pity, nosurprise…）+ that从句③it + be + 过去分词（said, reported, thought, expected, decided…）+ that从句即形容词/名词词组/过去分词形式主语真正主语在口语和非正式文体中，that可省略，尤其很短的句子，that不必要，但是that从句位于句首时，that绝不可省略2.whether引导的主语从句强调主语从句谓语句首只能用whether，不可用if代替主语从句在句末，whether和if均可3.特殊疑问词引导的主语从句常用it作形式主语连接代词who, which和连接副词when, where, how, why都可引导主语从句，不可省如句子是疑问句式，则必须用it引导4.名词性关系从句（以what或wh-ever等连接代词引导的名词性关系从句）what或wh-ever引导主语从句【例】What they need is a good textbook.Whichever he likes will be given to him二、宾语从句1.以that引导的宾语从句常见的可以接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，在可以接复合宾语的动词之后如think, make, consider等，可以用it作形式宾语That从句一般不能充当介宾，偶尔可做except，in的宾语【例】he is a good student except that he is a little bit careless2.whether/if 引导的宾语从句whether从句中不能有否定式介词后只能用whether，不能用if3.特殊疑问词引导的宾语从句能接特殊疑问词引导的宾语从句的动词很多，例如see, tell, ask, answer,know, decide, find out, imagine, suggest, doubt, wonder, show, discuss,understand, inform, advise等4.名词性关系从句（作动宾，介宾）三、表语从句1.that引导表语从句that 不可省略My ides is that we’ll all go except him.That是连词，在句中不充当成分，没有意义，不可省略2．Whether引导表语从句只能用whether，不能用if注：从属连词if一般不用来引导表语从句，但是as if却可以3.特殊疑问词引导表语从句注意从句用陈述语序The problem is where we should stay.4.名词性关系从句注意从句用陈述语序Tomorrow is when it would be most convenient.四、同位语从句1.that引导的同位语从句应在某些抽象名词后，如fact, hope, desire, thought, suggestion, idea, news, problem, possibility，对前面的名词起补充说明作用，在从句中不充当任何成分，但不可省略。
2023届高考英语语法：名词性从句运用及考点讲义
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。
高考英语名词性从句考点考法、解题步骤、典型例题
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。
高考英语名词性从句语法知识点讲解
高考英语名词性从句语法知识点讲解主语从句宾语从句表语从句同位语从句作及物动词宾语作介词宾语that一般不省略可以省略一般不省略一般不省略一般不省略Whether/if(是否)放于句首时只用whether用whether/if均可，但有区别只用whether只用whether只用whether特殊疑问词注意语序要用陈述语序名词性关系从句注意语序要用陈述语序一、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,certai n,probable,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可以省略，但that从句位于句首时，that不能省略。
2、宾语从句(1)常见的可以接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。
在可以接复合宾语的动词之后，如think, make, consider等，可以用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。
高考英语语法专攻-《名词性从句》-考点归纳+针对性练习
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.W hether 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。
高考英语名词性从句用法详解
高考英语名词性从句用法详解一、考点分析在复合句中具有名词的性质的作主语、宾语、表语、同位语的从句叫名词性从句。
因此，我们把主语从句、宾语从句、表语从句和同位语从句这四种从句统称为名词性从句。
名词性从句的高考考点考点引导名词性从句的关联词、名词性从句句法结构、定语从句与同位语从句的区别二、专题讲解知识点1）引导名词性从句的关联词：1．从属连词：that , if ,whether① that 本身没有意义，在从句中不做任何句子成分。
引导单个宾语从句时，that可以省略。
但引导主语从句、表语从句、同位语从句与形式宾语it并存的宾语从句时，that都不能省略。
如果引导两个或两个以上宾语从句，第一个that可以省略，从第二个宾语从句起向后的从句中的that不能省。
例如：1. I don’t think （that）she is coming. (可省)2. The reason is that he is careless. （不能省）3. The news that our team won the match inspired us.（不能省）4. I don’t think it necessary that you should read English aloud. （不能省）5. He told me （that）his father had died and that he had to live alone.（第一个可省，第二个不可省）②.从属连词whether 和ifWhether 和if 是“是否”的意思，在从句中不担当句子成分。
引导宾语从句时（动词后面的宾语从句）二者可以换用，若宾语从句提前只用whether. 但引导主语从句、表语从句、同位语从句、介词后的宾语从句，及紧跟or /or not 结构或不定式时，只能用whether.①He wants to know whether or not you agree.②He doesn’t know whether to stay or not.③He wondered whether to accept or refuse.④It all depends on whether they will do their best.⑤Whether she will come or not is still a question .⑥The question is whether it is worth doing.⑦None of them can answer the question whether it is worth doing.2 .连接代词：who , whom, what , which , whose 及whoever, whomever, whatever, whichever既保留原意，又在从句中担当句子成分。
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英语名词性从句十大考点全攻略
Who/whoever，what/whatever等的用法区别
一般说来，what/who等含特指意义，而whatever/whoever等含泛指意义，意为“无论什么/无论谁”。
Itisgenerallyconsideredunwisetogiveachild____heorshewants.
A.however
B.whatever
C.whichever
D.whenever
解析：答案是B，whatever引导一个宾语从句，并且作wants 的宾语。
这里的whatever不能改成what，因为题意想表达的显然是“无论孩子要什么就给他/她什么事不明智的”，具有泛指的概念。
同时要注意，这里whatever也不能改用nomatterwhat，因为后者只能引导状语从句。
比较下例：
Ican’trememberatthemomentwhohassaidthewords.(这里的who表特定的某人)
Where，when，why等连接副词引导的名词性从句
Where，when，why等连接副词也可以引导名词性从句，使用的关键是：这个词必须符合句子的逻辑要求。
—IdrovetoZhuhaifortheairshowlastweek.
—Isthat____youhadafewdaysoff？
A.why
B.when
C.that
D.where
解析：答案是A，why引导的从句作表语，同时why在从句中作原因状语。
这里之所以选why，而不是when或where等，唯一的依据便是句子的逻辑含义，及语境。
“介词+who(m)引导的宾语从句”与“介词+whom”引导的定语从句的区别
介词后面的引导词用主格还是宾格，决定于它在宾语从句中作主语还是宾语。
Itwasamatterof____wouldtaketheposition.
A.who
B.whoever
C.whom
D.whomever
解析：答案是A。
这是一个含宾语从句的复合句，作介词of宾语的，是后面的整个句子，而不是宾语从句的引导词，由于这里引导词在从句中作主语，所以要用主格who(作宾语时自然要用whom)。
名词性从句中有插入成分时
此时应注意两点：一是从句仍然不倒装，而在插入成分上倒装；二是要注意主语的主格和宾格的选择。
____youhaveseenbothfighters，____willwin？
A.Since；doyouthinkwho
B.As；whoyouthink
C.When；whoever
D.Since；whodoyouthink
解析：根据上面的讲解，不难知道答案是D。
其中doyouthink 是插入成分，其余部分是宾语从句，作think的宾语；由于引导词在从句中作主语，所以要用主格who(不用whom)。
引导词that的省略
引导宾语从句时，that通常可以省略，但引导主语、表语和同位语从句时，that不能省。
例如：
Ch ina’ssuccessinmanned-spacecrafttravelshows____ourcountryha sbecomeoneofthegreatestpowersinspaceresearch.
A.what
B.which
C.不填
D.itthat
解析：该句中的从句作shows的宾语，是宾语从句，又因为从句中不缺主、宾语，所以只能用that引导；又因引导宾语从句时that 可以省略，所以答案是C。
同位语从句引导词where，when的用法特点
说明先行词内容的同位语从句的引导词where，when与被说明的名词在概念上不一致。
但引导定语从句的引导词却必须保持一致。
试比较：
1.Thenarosethequestion____weweretogetsomuchmoney.
2.Thisthehouse____thegreatmanMaoZedongwasborn110yearsago .
A.where
B.that
C.aboutwhich
D.inwhich
解析：答案分别是1.A2.A/D。
先行词与where，when概念一致时，是定语从句，2题中的house与where同表地点，且这个关系副词where或when可以用“介词+which”的形式代替，所以答案A和D都可以引导。
1题中的question与where不表同一概念，可见是同位语从句，所以where不能改用“介词+which”的形式。