名词性从句精讲精析
名词性从句讲解(最全版)
名词性从句讲解(最全版)名词性从句是一个从句，它在句子中充当名词的角色。
它可以作为主语、宾语、表语、同位语或介词宾语。
名词性从句通常由连接词引导，如that、whether、if、who、whom、whose、which、what等。
1. 作为主语：名词性从句可以作为主语，取代一个名词或名词短语，引导词通常为that或whether。
例如：- What you said is true.（你说的是真的。
）- Whether he will come is still uncertain.（他是否会来还不确定。
）2. 作为宾语：名词性从句可以作为及物动词或介词的宾语，引导词通常为that、whether、if、who、whom、whose、which、what等。
例如：- She asked me what I wanted.（她问我想要什么。
）- I don't know if/whether he will come.（我不知道他是否会来。
）3. 作为表语：名词性从句可以作为系动词的表语，引导词通常为that、whether、who、whom、whose、which、what等。
例如：- The problem is that she doesn't understand.（问题在于她不理解。
）- The question is who will take care of them.（问题是谁会照顾他们。
）4. 作为同位语：名词性从句可以作为同位语，解释或说明前面的名词或代词，引导词通常为that、whether、who、whom、whose、which、what等。
例如：- The fact that he lied surprised me.（他撒谎的事实让我感到惊讶。
）- His belief that she will succeed is unwavering.（他坚信她会成功。
英语语法精析精讲之名词性从句
英语语法总结全集名词和主谓一致一、名词的分类英语中名词主要可以分为可数名词和不可数名词。
1．可数名词可数名词一般都有单复数。
单数时，名词前可加不定冠词a/an；复数时，前面可加数词，名词本身要改成复数形式。
可数名词的复数有规则和不规则两种变化。
规则的名词，只要在单数名词之后加“s”，“es”或去“y”加“ies”就行，如：an umbrella, twelve umbrellas；a factory, three factories。
不规则的名词变化则要靠积累记忆，如：a mouse, ten mice；a policeman, six policemen。
有少数可数名词，如sheep，works（工厂），Chinese等，它们的单复数同形：a sheep, four sheep；a chemical works, five chemical works。
此外，还有一些可数名词只有复数形式，如clothes，trousers，cattle，police，people(人，人民)等。
英语名词中还有一些合成词，它们的复数形式有三种可能：1）后面的部分变成复数形式：grown-ups，boy students，grandchildren。
2）前面的部分变成复数形式：passers-by，lookers-on，sons-in-law。
3）前、后都变成复数形式：men doctors，women drivers。
2．不可数名词不可数名词没有单复数的变化，前面也不能加a/an，或数词。
但是我们可以用量词来表示不可数名词的数量，单复数表现在量词上，如：a piece of paper；two pieces of paper。
在有些情况下，不可数名词也可用a/an，表“一种”、“某种”的意思，如have a wonderful time，receive a good education，be made into a fine paper。
名词性从句要点讲解
4. The problem is how we can
persuade the young men to stop smoking.
5.That is why he was late.
6.That is what he is worrying about.
7.That is where he was born.
fact, news, message, idea,
suggestion, question, order, problem, belief,thought等.
引导同位语从句的连词通常有 that/whether
例:
The fact that the majority voted for the man surprised many people.
was ready.
5)介词后不能用if.
It all depends on whether they will support us.
The old woman was interested in when and where Tom and Mary had their wedding party.
5、what\who\which + ever和
no matter + what\who\which的区：
①what\who\which + ever可引导名词性 从句和让步状语从句 Whoever breaks the rule must be p unished.
Whatever you do, you must do it wel
② no matter + what\who\which只能引 导让步状语从句。如： No matter who breaks the rule, h e must be punished.
2020版高考英语必考点专题14名词性从句(精讲深剖)(含解析)
专题14 名词性从句——精讲深剖一．单句语法填空1.（2019全国卷I）While they are rare north of 88°,there is evidence they range all the way across the Arctic,and as far south as James Bay in Canada.【答案】that【解析】考查同位语从句。
根据句子结构分析可知，主句为there be句型，且结构完整，空格后为同位语从句，解释说明中心词evidence的内容，故填that。
2. （2018全国卷III）I'm not sure 61 is more frightened，me or the female gorilla (大猩猩) that suddenly appears out of nowhere.【答案】who【解析】考查宾语从句。
句意：我不确定谁受到了更大的惊吓，是我还是那只不知从何处突然出现的雌性大猩猩。
根据句意和句子结构可知，空处引导宾语从句，在从句中作主语，表示“谁”，故填who。
二．单项选择1.（2019江苏卷）Scientists have obtained more evidence ___________ plastic is finding its way into the human body.A. whatB. thatC. whichD. where【答案】B【解析】考查同位语从句。
句意：科学家已经获得更多证据，塑料正在进入人们的体内。
从句不缺句子成分，且与evidence指代的是同一事件，用that引导同位语从句。
故选B。
2.（2018江苏卷）By boat is the only way to get here, which is _______ we arrived.A. whereB. whenC. whyD. how【答案】D【解析】考查名词性从句。
高考重难点名词性从句精讲
There is no scientific proof for the idea that time travel is possible.
5.Chinese students should be given more free time./ __________________________________________ The suggestion is welcomed by many people, especially ____________ kids in school. The suggestion that Chinese students should be given more free time is welcomed by many people, especially kids in school.
例:问题是我们什么时候得到答案。
例:问题不是谁去，而是谁留下来。
表语 The question is when we’ll get the answer.
The problem is not who will go but who will stay. 表语
4.同位语从句：
同位语从句起着进一步解释或说明它前面的名词的作用，
作用：对主语进行解释说明。
表语从句:在句中充当表语成分，一般放在连系动词之后 .
3. 表语从句：
在连系动词之后的句子叫做表语从句。
例:问题是谁能去那里。 表语 The question was who could go there. 例:那是他为什么迟到的原因。 That is why he was late. 表语
The fact that two thirds of all girls are on a diet worries their parents and teachers a lot. 2.The Queen of England was on a three-day visit in ______________________________________________ China./ We heard _________ the news last night. ______ We heard the news last night that the Queen of England was on a three-day visit in China.
考点08 名词性从句(核心考点精讲精练)(解析版)
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。
高中英语语法-名词性从句精讲(共73张PPT)
Whoever wants the book may have it. I’ll do whatever I can to help him. Buy whichever is cheapest.
连接副词 when, where, how, why
when • When they will start is unknown yet. where • Where she has gone is a mystery. how • How this happened is not clear. why • Why he did that wasn’t quite unclear.
主语从句关联词 连词 that, whether 连接代词 what, who, whom, which 连接副词 when, where, how, why
连词 that, whether
只起连接作用 在从句中不充当任何句子成分
• That he will win is certain.
• It has been reported that sales of beef in China will increase.
宾语从句关联词 连词 that, whether; if 连接代词 what, who, whom, whose, which 连接副词 when, where, how, why
• I doubt _______ he will come soon. • I do not doubt _____ he will come soon. • Do you doubt _____ he will come soon?
• what surprised me was what he said.
英语名词性从句讲解【完整版】
2、I asked him if he could do me a favor .
If与whether的区别：
1、If不能引导放于句首的主语从句，而whether可以。 2、引导表语从句用whether，不用if。 3、引导同位语从句用whether，不用if。 4、whether可以引导从句作介词的宾语，不用if 。 5、whether or not 连在一起可以，但if不可以。而 “whether-----or not = if -----or not”
同位语从句：
定义：在复合句中充当同位语的句子。 同位语从句用来对其前面的抽象名词进行解释说明，被解释说明的词和 同位语在逻辑上是主表关系。 同位语常见名词：fact, suggestion, advice, idea, decision, news, thought, hope, belief, truth, doubt, promise, possibility, truth, warning, message, reason, report, question，explanation, wish, problem等。 常见的连接词：that, whether, what, who, how, when, where等。 用法： The thought that I want to buy my mother a birthday gift makes me excited.that 引导的同位语从句，解释说明 thought，从句不缺成 分 There is some doubt whether he will come. whether 引导同位语从句，if 不能引导同位语从句 we haven’t made the decision where we are going to spend our vacation. 有时同位语从句可以不紧跟解释说明的名词后面。 The news is surprising that he won the match.
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名词性从句——主语从句、宾语从句、表语从句、同位语从句名词性从句是由if, whether, that 和各种疑问词充当连接词所引导的从句，其功能同名词一样。
一．主语从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
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。
被强调部分指人是也可用who/whom。
例如：It is a pity that you didn’t go to see the film.It doesn’t interest me whether you succeed or not.It is in the morning that the murder took place.It is John that broke the window.2. 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 ＋不及物动词＋从句It seems that…似乎…It happened that…碰巧…(4) it ＋过去分词＋从句It is reported that…据报道…It has been proved that…已证实…3. 主语从句不可位于句首的五种情况(1) if 引导的主语从句不可居于复合句句首。
(2) It is said , (reported) …结构中的主语从句不可提前。
例如：It is said that President Jingo will visit our school next week. (right)That President Jiang will visit our school next week is said. (wrong)(3) It happens…, It occurs…结构中的主语从句不可提前。
例如：It occurred to him that he failed in the examination. (right)That he failed in the examination occurred to him. (wrong)(4) It doesn’t matter how/whether …结构中的主语从句不可提前。
例如：It doesn’t matter whether he is wrong or not. (right)Whether he is wrong or not doesn’t matter. (wrong)(5) 含主语从句的复合句是疑问句时，主语从句不可提前。
例如：Is it likely that it will rain in the evening? (right)Is that will rain in the evening likely? (wrong)4. What 与that 在引导主语从句时的区别What 引导主语从句时在句时在从句中充当句子成分，如主语、宾语、表语，而that 则不然。
例如：1) What you said yesterday is right.2) That she is still alive is a consolation.二．宾语从句宾语从句就是在复合句中作宾语的名词性从句，通常放在主句谓语动词（及物动词）或介词之后。
1. 作动词的宾语(1) 由that引导的宾语从句（that 通常可以省略）,例如：I heard that he joined the army.(2) 由what, whether (if) 引导的宾语从句，例如：1) She did not know what had happened.2) I wonder whether you can change this note for me.(3) 动词＋间接宾语＋宾语从句。
例如：She told me that she would accept my invitation.2. 作介词的宾语例如：Our success depends upon how well we can cooperate with one another.3. 作形容词的宾语例如：I am afraid (that) I’ve made a mistake.That 引导的从句常跟在下列形容词后作宾语：anxious, aware, certain, confident, convinced, determined, glad, proud, surprised, worried, sorry, thankful, as hamed, disappointed, annoyed, pleased, hurt, satisfied, content 等。
也可以将此类词后的that 从句的看作原因状语从句。
4. It 可以作为形式宾语It 不仅可以作为形式主语，还可以作为形式宾语，而真正的宾语that 从句则放在句尾，特别是在带复合宾语的句子中。
例如：We heard it that she would get married next month.5. 后边不能直接跟that 从句的动词这类动词有allow, refuse, let, like, cause, force, admire, condemn, celebrate, dislike, love, help, take, forgive等。
这类词后可以用不定式或动名词作宾语，但不可以用that引导的宾语从句。
例如：I admire their winning the match. (right)I admire that they won the match. (wrong)6. 不可用that从句作直接宾语的动词有些动词不可用于“动词＋间接宾语＋that从句”结构中，常见的有envy, order, accuse, refuse, impress, forgive, blame, denounce, advise, congratulate等。
例如：He impressed the manager as an honest man. (right)He impressed the manager that he was an honest man. (wrong)7. 否定的转移若主句谓语动词为think, consider, suppose, believe, expect, fancy, guess, imagine等，其后的宾语从句若含有否定意义，一般要把否定词转移到主句谓语上，从句谓语用肯定式。
例如：I don’t think this dress fits you well.（我认为这件衣服不适合你穿。
）三．表语从句表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语＋连系动词＋表语从句”。
可以接表语从句的连系动词有be, look, remain, seem等。
引导表语从句的that常可省略。
另外，常用的还有the reason is that…和It is because 等结构。
例如：1) The question is whether we can make good preparation in such a short time.2) This is why we can’t get the support of the people.3) But the fact remains that we are behind the other classes.4) The reason he is late for school is that he missed the early bus.四．同位语从句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。
1. 同位语从句的功能同位语从句对于名词进一步解释，说明名词的具体内容，一般由that引导，例如：1) The king’s decision that the prisoner would be set free surprised all the people.2) The order that all the soldiers should stay still is given by the general.2. 同位语在句子中的位置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。
例如：He got the news from Mary that the sports meeting was put off.3. 同位语从句与定语从句的区别(1) 定语从句中的that既代替先行词，同时可以在从句中作某个成分（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。
(2) 定语从句是形容词性的，其功能是修饰先行词，对先行词加以限定，描述定的性质或特征；同位语从句是名词性的，其功能是对名词进行补充说明。
例如：1) The news that he told me is that Tom would go abroad next year.（他告诉我的消息是汤姆明年将出国。
）（第一个that引导的从句是定语从句，that在从句中作宾语）2)The news that Tom would go abroad is told by him.（汤姆将出国的消息是他讲的。
）（同位语从句，that在句中不作任何成分）名词性从句精讲精析（2）名词性从句精讲精析（2）——由连接词引导的名词性从句一、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。