高中英语语法讲解之名词性从句
Whether there is life on the moon is an interesting question.
The question is whether she should have a low opinion of the test.
介词后的宾语从句一般不用 which和if引导，要用whether和 what。that也很少引导介词宾语 从句，只在except, but, besides等 之后才用。 I don’t care about whether you have money or not. Everything depends on whether we have enough money.
注意:在demand, order, suggest, advise, decide, insist, desire, request, command等表示要求、 命令、建议、决定等意义的动 词后，宾语从句常用 “should+ 动词原形”。 I insist that she (should) do her work alone.
I know that he studied English last term.
I know (that) he will study English next year.
We all know that he has studied English since 1998.
如果主句中的谓语动词用了一 般过去时，则从句中的语动只 能用过去时的某种形式，如一 般过去时，过去进行时，过去 将来时等；
Whoever breaks the law should be punished.
3. 表语从句 在句中作表语的句子叫表语从句。 引导表语从句的关联词与引导 主语从句的关联词大致一样， 表语从句位于连系动词后，有 时用as if, because 引导。其基本 结构为： 主语 + 系动词 + that从句
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。
I had no idea that you were here. (that引导同位语从句,不能省略） Have you got the idea（that）this book gives you of life in ancient Greece？ (that引导定语从句，作宾语， 可以省略）
I have no idea when she will be back.
The news that we won the game is exciting.
The thought came to him that Mary had probably fallen ill.
同位语从句和定语从句的区别：
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： It is necessary It’s important, It’s natural
2. 宾语从句 名词句用作宾语的从句叫宾语 从句。
引导宾语从句的关联词与引导主 语从句表语从句的关联词大致一 样，在句中可以作谓语动词或介 词及非谓语动词的宾语。
That he stole a bike was true.
单个的主语从句作主语时，谓 语动词用单数形式。如果是两 个或两个以上的主语从句作主 语，谓语动词则用复数形式。 When and where he was born has not been found. When the person was murdered and why he was murdered are still unknown.
2)用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等 关联词引导的宾语从句相当于 特殊疑问句，应注意句子语序 要用陈述语序。
I want to know what he has told you.
有时为避免句子头重脚轻，常 用it 代替主语从句作形式主语 放于句首，而把主语从句置于 句末。主句的谓语动词一般用 单数形式。常用句型如下： 1）It + be + 名词 + that从句 2）It + be + 形容词 + that从句
3）It + be + 动词的过去分词 + that从句 4）It + 不及物动词 + that 从句
在复合句中起名词作用的从 句叫做名词性从句。
主语从句 表语从句
名词性从句
宾语从句 同位语从句
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（不充当 从句的任何成分）
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。
It is a pity that… it’s a shame that… It’s no wonder that… It is suggested that… It’s requested that… It’s proposed that…, It’s desired that…
1.)由连接词that引导的宾语从句
由连接词that引导宾语从句时， that在句中不担任任何成分，在 口语或非正式的文体中常被省 去，但如从句是并列句时,第二 个分句前的that不可省。 He has told me that he will go to Shanghai tomorrow.
We must never think (that) we are good in everything while others are good in nothing.
4. 同位语从句 同位语从句说明其前面的名词 的具体内容。 同位语从句一般跟在某些表示 抽象概念 的名词后,如 news, idea, information, fact, hope, thought, belief 等，用来说明名 词所表示的具体内容，
引导同位语从句的连接词通常 有that, whether和连接副词when, where, why, how；连接代词 who，what，whose，which通 常不引导同位语从句。
We believed that he had earned enough money to build a house.
The teacher told us that Tom had left us for America．
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。
The teacher told us that the sun rises in the east.
5)当主句是I/ We think (suppose, expect, believe, guess, imagine) 时， 其后的宾语从句如果是否定形式， 常把否定词not从从句中转移到主 句中成为否定的转移。 We don’t believe that he will win the game. I don’t think he will do so.
We doubt whether/ if he can win the game.
I don’t doubt that he will win the game.
连接代词whoever，whatever， whichever可引导名词性从句， 相当于anyone who, anything that 等。它们也可以引导让步状语 从句，相当于 no matter who/ what/ which。
She always thinks of how she can work well. She will give whoever needs help a warm support.
3)用whether或if引导的宾语句
whether和if均可引导动词后的 宾语从句，常可互换。但从句 中有or not时或介词后的宾语从 句中只能用whether连接。其它 名词性从句，如：主语从句、 表语从句、同位语从句只用 whether.
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用于肯定结构时，后面用 whether/ if 导名词性从句；用 于否定结构或疑问结构时，后 面用 that 引导名词性从句。be sure 用于肯定句或疑问句时， 后接 that 引导的名词性从句； 用于否定句时，后接whether/if 引导的名词性从句。
that在从句中无词义，只起连接 作用；连接代词和连接副词在 句中既保留自己的疑问含义、 又起连接作用，在从句中充当 成分。 What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
Who will win the match is still unknown. Where the English evening will be held has not yet been announced.
在名词性从句中一律用陈述句 的语序，即使从句表达的是疑 问含义。 The problem is what he has done to the little boy. 问题是他对那个小男孩做了些 什么。
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。
高三英语一轮语法专题复习之名词性从句课件
How to choose the linking words?
连接词：
连接代词:
连接副词：
划分主从句
从句缺什么成分和意思
选择连接词
做题三部曲
1) Many people don’t understand _____ he likes Judy so much. 2) They are surprised by the fact ____ Nick likes skinny girls. 3) In his opinion, ______ much he has for the ring is the most important thing. 4) His promise is _______ he will not steal any more. 5) Now he has to decide _______ ring Judy will like. 6) He also has to find out _______ Judy lives so he can give her the ring.
C. Nick will do what
Exernow more of their love story? Let’s go on and learn about the linking words.
四、引导词
(1) Nick considers whether he can buy Judy a gift.(2) But what she likes is very important.(3) Luckily a book tells him how he can win a girl’s heart.(4) The book says where he can buy the best ring for her.(5) The idea that Judy will be happy to see the ring makes him excited.
高中英语语法讲解素材_名词性从句
高中英语语法讲解——名词性从句一、名词性从句的三类连词名词性从句包括主语从句，表语从句，宾语从句和同位语从句。
根据这些从句的共同特性，名词性从句的连词主要可以分成三类：that, if/ whether和wh-(疑问词)。
1．如果一个陈述句被用来作为另一个句子的主语、表语、宾语或同位语，那么我们一般要用that作为连词。
that本身在句子中没有意思，只起连接作用。
eg. 陈述句：Science is developing very fast.主语从句：It is known to all that science is developing very fast.表语从句：The fact is that science is developing very fast.宾语从句：Everyone knows that science is developing very fast.同位语从句：The fact that science is developing very fast is known to all.2．如果一个一般疑问句被用来作为另一个句子的主语、表语、宾语或同位语，那么我们要用whether或if作为连词。
whether/ if在句子中的意思是“是否”。
变成名词性从句后，原来的疑问句的词序要改成陈述句的词序（主语+谓语）。
eg. 一般疑问句：Shall we have a meeting this afternoon?主语从句：Whether we shall have a meeting this afternoon hasn’t been decided yet.或：It hasn’t been decided yet whether we shall have a meeting this afternoon.表语从句：The question is whether we shall have a meeting this afternoon.宾语从句：Do you know whether we shall have a meeting this afternoon?同位语从句：None of us can answer the question whether we shall have ameeting this afternoon.注意：原来的疑问句词序在从句中都被改变成陈述句的词序，复合句的标点符号由主句的句型决定。
高中英语语法名词性从句专题讲解
高中英语语法名词性从句专题讲解一、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,certain,prob able,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。
二、whether/if从句1、在表语从句和同位语从句中只能用whether不能用if;当主语从句放于句首时，只能用whether不用if;当it作形式主语，主语从句放在句末时用whether或if均可；discuss后引导宾语从句时，必须用whether。
高考英语语法知识点：名词性从句
高考英语语法知识点：名词性从句1500字名词性从句是指在句子中充当名词的成分的从句。
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。
在高考英语中，名词性从句是考查的重点之一，我们需要对名词性从句的结构和用法有透彻的理解。
下面是关于名词性从句的一些重要知识点：1.主语从句主语从句在句中充当主语的作用。
主语从句通常以that引导，也可以用whether或if 引导。
例如：- That he is guilty is certain.- Whether we will win the game is yet to be seen.- If it will rain tomorrow is still uncertain.2.宾语从句宾语从句在句中充当宾语的作用。
宾语从句通常以that引导，也可以用whether或if 引导。
需要注意的是，当主句的动词是说、tell、ask、think、believe、know等表示说话、思考、感觉的动词时，常用连词that引导宾语从句，但如果宾语从句的主语与主句的主语相同，可以省略连词that。
例如：- I know that he is a good student.- She asked me if/whether I had finished my homework.- He told her (that) he loved her.3.表语从句表语从句在句中充当表语的作用。
表语从句通常以that引导，也可以用whether或if 引导。
例如：- The fact that he didn't come is disappointing.- The question is whether we should proceed with the plan.- My concern is if/whether we have enough time.4.同位语从句同位语从句用来解释或说明前面名词的具体内容或意义。
名词性从句知识点
名词性从句知识点在英语语法中，名词性从句是一个重要且复杂的部分。
它在句子中起着名词的作用，包括主语从句、宾语从句、表语从句和同位语从句。
接下来，让我们逐一深入了解。
一、主语从句主语从句即在句子中充当主语的从句。
例如，“What he said is true”（他说的是真的。
）在这个句子中，“What he said”就是主语从句。
引导主语从句的连接词主要有三类：1、从属连词：that、whetherThat he will come is certain （他会来是肯定的。
）这里的“that”在从句中不充当成分，只起引导作用。
Whether she will go there is not decided （她是否会去那里还没决定。
）“whether”表示“是否”。
2、连接代词：what、who、which、whose、whatever、whichever、whoever 等What you need is more practice （你需要的是更多的练习。
）“what”在从句中充当宾语。
3、连接副词：when、where、why、how 等When the meeting will be held has not been announced （会议何时举行还未宣布。
）需要注意的是，主语从句后置时，常用 it 作形式主语，而将真正的主语从句放在后面。
例如：It is unknown whether he will come （他是否会来还不知道。
）二、宾语从句宾语从句在句中充当宾语。
比如，“I know that he is a student”（我知道他是个学生。
）“that he is a student”就是宾语从句。
引导宾语从句的连接词与主语从句类似：1、从属连词：that（在口语或非正式文体中常省略）、whether、ifHe said （that) he was busyI wonder if/whether he will come2、连接代词：what、who、which、whose、whatever、whichever、whoever 等She asked me what I was doing3、连接副词：when、where、why、how 等Could you tell me how I can get there?宾语从句的时态要根据主句的时态来变化。
高中英语知识点归纳名词性从句
高中英语知识点归纳名词性从句名词性从句是英语中的一个重要语法知识点，它在句子中起着名词的作用。
名词性从句一般由连接词引导，可以作主语、表语、宾语、同位语等。
它的运用能够使句子更加丰富多样，增加表达的灵活性。
本文将对名词性从句的几种常见情况进行归纳总结。
一、名词性从句作主语名词性从句可以作为句子的主语，它承担了动词的逻辑主语的地位。
常用的连接词有：that, whether, if等。
1. 引导词为that的情况：例如：That he didn't come as he had promised was disappointing.翻译：他没有按照承诺的那样来，真令人失望。
2. 引导词为whether/if的情况：例如：Whether he will come or not remains unknown.翻译：他是否会来还是个未知数。
二、名词性从句作表语名词性从句可以作为句子的表语，表达主语的性质、特点、状态等。
常用的连接词有：that, whether, what等。
例如：It is unclear whether he is telling the truth or not.翻译：他是否在说真话还不清楚。
三、名词性从句作宾语名词性从句可以作为句子的宾语，接在及物动词、介词后面。
常用的连接词有：that, whether, if, what, who, whom, which, whose等。
1. 当宾语从句是及物动词的宾语时，常用连接词是that。
例如：He said that he would come tomorrow.翻译：他说他明天会来。
2. 当宾语从句是介词的宾语时，常用连接词是whether/if, 当介词为介词to时，连接词也可以用为不定式to。
例如：She is not sure about whether/if he will join us.翻译：她不确定他是否会加入我们。
高中英语名词性从句语法讲解
This is how they overcome the difficulties.
My strongest memory is when I attended an
American wedding.
5. 其他连词as if, because, as, as though 引导的表语从句
C．表示某种状态的：remain, keep, prove, continue, stay等.
1. that 引导的表语从句 that 仅起连接作用，无意义，在句中不作任何成分， 通常不可省略。这种从句往往是对主句主语的内容起 进一步解释的作用。
e.g. The chance is that one smoker in four will die from
think等变为否定形式;
e.g. I don’t think you are right．
(5) 在think，believe，imagine，suppose，guess，hope
等动词以及 I’m afraid 等后，可用so代替一个一定的
宾语从句，还可用not代替一个否定的宾语从句：
e.g. 一Do you believe it will clear up你认为天气会转晴吗
连接副词：when, where, how, why 连接代词和连接副词一般做句子的某一成份
The Subject Clause
用作主语的从句叫主语从句。引导主语从句的 连接词有：
连词that, whether；
连接代词what, whatever, who, whoever, whom, whomever, whose, which,
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.