高中英语名词性从句详细讲解
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。
高中英语名词性从句知识讲解以及练习题 附答案
高中英语名词性从句知识讲解以及练习题附答案一、名词性从句概述名词性从句是一种充当名词作用的从句，通常在主句中作主语、宾语、表语或同位语。
它通常由引导词（如that, whether, if, who, whom, whose, which, what等）引导，并且从句中含有一个主语和谓语。
名词性从句的种类有很多，包括主语从句、宾语从句、表语从句和同位语从句等。
下面我们将逐一介绍这些从句。
二、主语从句主语从句作为一个名词，通常位于句首，是一个句子，主要作用是作为主句的主语。
引导主语从句的词：What (什么)；Whether (是否)；If (是否)；That (那个)。
例句：What he said is true. (他说的是真的。
)Whether it will rain tomorrow is uncertain. (明天是否会下雨还不确定。
)If you go, I will go too. (如果你走，我也跟着走。
)That he is coming is good news. (他来的消息是好消息。
)注意：主语从句的谓语动词通常要用单数形式。
What引导的主语从句通常用来表示“事物”的概念。
三、宾语从句宾语从句是一个名词，通常位于主句的动词后面，作为主句的宾语。
它可以由常见的宾语从句引导词引导，例如whether, if, that, who, whom, whose, what, when, where, how等。
引导宾语从句的词：Whether (是否)；If (是否)；That (那个)；Who (谁)；Whom (谁)；Whose (谁的)；What (什么)；When (何时)；Where (何处)；How (如何)。
例句：I know that he is coming. (我知道他要来。
)I wonder if he is telling the truth. (我想知道他是否说了真话。
高中英语名词性从句讲义(超详细版)
名词性从句一．定义：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。
1. His words are true. What he said is true.2. The dog sensed something good. The dog sensed that there was something good nearby.3. These are his words. These are what he said.4. My Maths teacher, Mr He, is a kind person. The news that the plane had crashed made us sad.二．引导名词性从句的连接词连词：在从句中不充当成分，只起连接作用 that, 无实义whether, if 是否as if \ as though 似乎，好像连接代词：有词义，在句中担任主语，表语，定语或宾语。
what, 什么 who, 谁whom, 谁，作宾语 whose, 谁的 which, 哪一个whatever, whoever……也可以引导。
连接副词：有词义，在句中担任状语。
when ,什么时候 where, 什么地方 why, 为什么 how ,怎么样how many, how much, how often三．主语从句1. 作句子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。
That he is late for school makes the teacher very angry. 他上学迟到让老师很生气。
高中英语名词性从句详解
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，名词性从句分为主语从句、表语从句、宾语从句和同位从句。
宾语从句——在复合句中作主句及物动词的宾语，也可作介词或某些形容词的宾语1.连接词从属连词that whether if 不担任成分只起连接作用关系代词who whom whose whatwhich既担任成分，又起连接作用。
主语，宾语或表语等关系副词when where why how 既担任成分，又起连接作用常担任状语I think (that) you will like the pictures.He has become what he wanted to be ten years ago.I don’t know why Jane was late for school this morning.The teacher is pleased with what she said.I'm afraid that I can't go to the party.2.注意事项①由that 引导的宾语从句(that通常可以省略)。
但如从句是并列句时,第二个分句前的that不可省。
He told me (that) he was ill and that he would not come to the party.②陈述语序I want to know what he has told you.She will give whoever needs help a warm support.③注意宾语从句中的时态呼应。
当主句动词是现在时，从句根据自身的句子情况，而使用不同时态。
当主句动词是过去时态（could, would除外），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，科学原理，自然现象，则从句仍用现在时态。
高中英语名词性从句精讲
高中英语名词性从句精讲从句是相对于主句而言的,即它是从属于某一个主句,而不能单独作一个句子。
在英语中,主要有三大从句,即名词性从句（包括主语从句,宾语从句,表语从句,同位语从句）、形容词性从句（即定语从句）、副词性从句（即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等）。
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。
引导名词性从句的连接词可分为三类：（1）从属连接：that, whether, if（不充当从句的任何成分）（2）连接代词：what, whatever, who, whoever, whom, whose, which.（3）连接副词：when, where, how, why名词性从句知识点汇总1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）2名词性从句的连接词分类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, 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 if,as though,because（不充当成分，在名词性从句中只引导表语从句）3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。
高中英语名词性从句详解
名词性从句—高中英语语法（1)表语从句ﻫ1. 定义：用作表语的从句叫做表语从句ﻫ2. 构成:关联词+简单句３．引导表语从句的关联词的种类：ﻫ（1）从属连词thaｔ。
如：ﻫThe ｔｒouble is thａt I haｖe loｓt hｉｓaddreｓs. 麻烦是我把他的地址丢了。
ﻫ(2）从属连词ｗhetheｒ, as, as if。
如:ﻫＨe ｌookｅd just as he had lookeｄｔen years befoｒe. 他看起来还与十年前一样。
ﻫＴhe questｉon is wheｔher thｅy wｉｌl ｂｅaｂle ｔｏhelｐｕs. 问题是他们是否能帮我们。
注:从属连词iｆ一般不用来引导表语从句，但as iｆ却可引导表语从句，如：All this waｓoveｒtｗenｔy yｅars ago, but it's aｓif it was onｌy ｙｅｓｔｅrdａｙ．ﻫ这都是２0多年前的事了，但宛如昨天一样。
ﻫ能跟表语从句的谓语动词一般为系动词ｂe, seeｍ，ｌook等。
如:Iｔlｏoｋed ａsｉf it ｗａs going to rain.看起来天要下雨了。
(3)连接代词who, ｗhoｍ, ｗhｏsｅ, what,which,whoｅｖer, wｈaｔeveｒ, ｗhichever连接副词where，ｗheｎ，how,ｗhy。
如：Ｔhｅprｏbｌeｍis who wｅcａn gｅt tｏｒepｌａce hｅr.问题是我们能找到谁去替换她呢。
Ｔhe quesｔion is hｏw hｅｄｉd it. 问题是他是如何做此事的。
ﻫThat wａｓwhat she dｉｄthis mornｉng on ｒeacｈinｇｔhe atｔic. 那就是她今晨上了阁楼干的。
解释:ﻫ１. 连词ｂecａuse可引导表语从句。
如:Ｉthiｎｋit is bｅcaｕｓe you arｅdoing too muｃh. 我想这是因为你做得太多。
(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。
高中英语名词性从句详细讲解与练习（附答案）
高中英语名词性从句详细讲解与练习在句子中起名词作用的从句叫名词性从句。
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，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。
引导名词性从句的词叫做连接词，包括：1.连词（在名词性从句中只起连接作用，不作成分）2.连接代词（在名词性从句中作主语、宾语或表语）3.连接副词（在名词性从句中作状语）所有的名词性从句的语序都是陈述语序。
I主语从句：是在主句中作主语的从句。
它由连接词引导，通常位于谓语动词之前。
连接词：1.连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether oThat he got the first prize excited him much.他获得一等奖一事使他非常兴奋。
It is doubtful whether we can get there on time.我们能否按时到达那儿还不确定。
D that引导的主语从句:在从句中不作任何成分，也没有实际意义。
一般情况下that不可省略。
That light travels in straight lines is known to all.众所周知，光沿直线传播。
That you don't like him is none of my business.你不喜欢他不关我的事。
2）whether引导的土语从句:常置于句首，表示“是否”之意；if一般不引导主语从句。
Whether he can finish his task on time is of greatimportance.他是否能按时完成任务非常重要。
Whether you can succeed or not depends on howhard you work at it.你能否成功取决于你努力的程度。
2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语,有具体意义且不能省略。
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I find it impossible that he can finish the work in two days.
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Exercises: “it”作形式主语或形式宾语：
A. What is required
B .What requires
C It is required
D. It requires
2. The Foreign Minister said, “_______ our hope that the two sides will work towards peace.” (2006 北京)
1.I hate __A__ when people talk with their mouths full． A. it B. that C. these D. them
2. I feel __B__ strange that he should be so careless. A. / B. it C. that D. how
3. It worried her a bit __B__ her hair was turning grey. A．while B. that C．if D．for
4 Will you see to __C__ that the luggage is brought back?
A. we
B. yourself
It appears that…
似乎…
It happens that ….
碰巧…
It202o0/9c/15curred to me that…… 我突然想起……
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：
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)W__h_at___you said yesterday t what you said yesterday.
2) T_h_a_t___she is still alive is a good thing.
主语从句
2.John said that he was leaving for London on Wednesday. 宾语从句
3.The fact is that he has not been seen recently. 表语从句
4.The fact that he has not been seen recently disturbs everyone in his office. 同位语从句
It is necessary (important, natural, strange, etc.) that …
It is suggested (requested, proposed, desired, etc.) that…
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2. what 与that 在引导主语从句时的区别
名词性从句
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名词性从句 noun clause
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主语从句
subject clause
宾语从句
object clause
表语从句
predicative clause
同位语从句
appositive clause
辨别下列名词性从句的类别：
1.How the book will sell depends on its author.
A. This
B. There is
C .That is D. It is
3.After Yang Liwei succeeded in circling the earth,_______ our astronauts desire to do is walk in space.(2004 上海)
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1.It + be + 形容词 ＋ that从句
It is necessary / important/ obvious that…
2.It + be + -ed分词 ＋ that从句
It is believed that…
人们相信…
It is known to us all that …. 众所周知…
5.He will talk to us about what he saw in U.S.
宾语从句 6.It is impossible that I go and attend the
meeting. 2020/9/15
主语从句
That/wh-clause + v +…主语从句 S +be/link.v + that/wh-clause表语从句 S + vt + that/wh-clause宾语从句 S + vi + prep + wh-clause宾语从句
时态呼应
He told me that he __h_a_d_f_i_n_is_h_e_d_ his job. (已经完成了工作)
否定转移
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
I insist that she (should) do her work alone. 我坚持要她自己工作。
The commander ordered that troops (should) set off at once. 司令 员命令部队马上出发。
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2. 用whether或if引导的宾语从句， 其主语和谓语的顺序也不能颠倒， 仍保持陈述句语序。此外， whether与if 在作“是否”的意思 讲时在下列情况下一般只能用 whether，不用if：
A .where B .what
C .that
D. how
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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.She did not know what had happened.
(作动词的宾语)
2. Our success depends upon how well we can cooperate with one another. (作介词的宾语)
Everything depends on whether we have enough money.
I wonder whether he will come or not. Can you tell me whether to go or to
stay?
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3.
宾语从句中的“时态呼应”与“否定转移”
a. 引导主语从句并在句首时；b. 引导表语从句时；c . 引导从句作 介词宾语时；d. 从句后有“or not” 时；e. 后接动词不定式时。
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Whether there is life on the moon is an interesting question.
The question is whether she should have a low opinion of the test?
C. it
D. them
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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。另 外，常用的还有the reason is that… 和It is because 等结构。 例如： 1) The question is _w_h_e_t_h_e_r_/_how we can make good preparation in such a short time. 2) This is _w__h_ywe can’t get the support of the people. 3) But the fact remains _th_a_twe are behind the other classes. 4) The reason _w__h_y__ he is late for school is _th_a_t_ he missed the early bus.
It has been decided that…… 已经决定……
3.It + be + 名词 ＋ that从句
It is common knowledge that… …是常识
It is a surprise that ….
令人惊奇的是…
It is a fact that……
事实是……
4.It + 不及物动词 ＋ that从句
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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。
引导名词性从句的连接词可分为三类： 连接词：that, whether, if 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 1。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，宾语从句中可省略 2。不充当介宾 3。 引导主语从句、表语从句和同位语从句,that不可省略。 4. that whether, if, as if ,as though（以上在从句中均不充当任何 成分