名词性从句简单

名词性从句一、名词性从句与简单句的区别在英文中，名词或名词短语主要充当四种句子成分：主语、宾语、表语和同位语。

如果把句子当作名词来用，分别充当另一句话的主语、宾语、表语或同位语，于是便构成了四种从句：主语从句、宾语从句、表语从句和同位语从句。

因为这四种从句在本质上相当于名词的作用，所以将其统称为名词性从句。

请看下表：在英语中，相当于名词作用的句子有三类，陈述句、一般疑问句以及特殊疑问句。

因此，名词从句就是用三种句子来分别充当另外一个句子的四种句子成分，者就构成了名词从句的本质特征。

但是，这三种句子不是直接放在另一个句子中作成分，而是要作各种变化调整。

接下来将具体讨论。

二、陈述句作句子成分1. 要在陈述句句首加上t hat用”that+陈述句”这一结构分别充当另一个句子的四种成分。

2.为什么要加that?对于陈述句，为什么要在其句首加that 后才能用它作成分呢？而为什么在宾语从句中that 又可以省去呢？因为在英文中，句子的核心意思主要是靠谓语部分来表达，一个句子只表达一个核心意思，也就是只能有一个谓语部分。

而添加that，相当于一个“指路牌”，能够帮助我们指明段句的方向，而不至于造成歧义。

而对于宾语从句，主句的谓语已经出现，后面所接的成分自然是谓语，所以在不会影响句子的意思下，是可以把that 省去的。

三、一般疑问句作句子成分1.用w hether 或if 引导先将疑问句的倒装语序变成陈述句语序(即主语放在谓语的前面)，并在句首加上whether 或if（if 只用在宾语从句中）来引导，以保留原句的疑问意义。

即“whether+陈述句”2. if 还是 whether?1)if 一般只用于引导宾语从句，而 whether 可引导宾语从句在 内的其他名词从句。

IF he comes or not makes no difference. 成 Whether he comes or not makes no difference.2)if 不和 or not 直接连用，即一般不说 if or not, 但可以说 if...or not 。

引导名词性从句的连接词可分为三类：连词（5个）：that （宾语从句或表语从句中"that"有时可以省略）whether, if （均表示“是否”表明从句内容的不确定性）as if ,as though （均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词（9个）：what, whatever, who, whoever, whom, whomever, whose, which, whichever连接副词（7个）：when, where, how, why, whenever, wherever, however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.3. 在从句中做成分的连词.whether与if 均为"是否"的意思。

但在下列情况下，只可用whether：1. whether引导主语从句并在句首。

eg:Whether he can come to the party on time depends on the traffic.2. 引导表语从句。

eg:The question is whether we can get in touch with her.3. whether从句作介词宾语。

eg:I am thinking about whether I should quit my present job.作句子主语的从句叫主语从句。

主语从句通常由下列词引导：1）从属连词that，whether,if等；2）连接代词what，who，which，whatever，whoever，whom 等；3) 连接副词how，when，where，why 等。

句子结构、成分、名词性从句一：句子基本成分：造句：1、你的电脑昨晚崩溃了。

2、与我们传统文化相比，有些人更喜欢西方文化。

3、你，我们的经理，有责任让谈话保持下去。

4、为了把这件事情做好，你可以寻找一些有帮助的人。

5、我听见她正在和一位在化学上很有经验的教授在交谈。

总结：主语（subject）：谓语（Verb）：宾语（Object）：定语（Attribute）：宾语补足语（Complement object）：表语：（predicative）：状语（Adverbial）：同位语：（Appositive）：二：句子结构主语状语从句并列连词语法填空（1）You have to move out of the way the truck cannot get past you。

（2）Mike was usually so careful，this time he made a small mistake。

（3）At school，some students are active some are shy，yet they can be good friends with one another。

（4）---Someone wants you on the phone。

--- nobody knows I am here。

（6）Go along the street，_______ you'll find the shop．（7）The weather was very cold，_______ many people were ill．（8）People think we look the same，_______ I can see that we're different．（9）I know him _______ I can't remember his name．（10）You may go with him _______ stay at home．（11）Let's take the stone away，_______ there may be an accident．（12）The shop was quite new，_______ it had opened only the week before．（13）My glasses were broken，_______ I need a new pair．三、名词性从句在句子中起名词作用的各种从句统称为名词性从句。

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。

〔一〕引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。

有词义，在从句中担任成分，如主语、表语、宾语、或定语等。

2、连接副词：when, where, why, how。

有词义，在从句中担任成分，作状语。

3、连接词：that, whether, if, as if。

that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。

注意：@连接代词与连接副词在句中不再是疑问句，因而从句中谓语不用疑问式。

@连接代词与连接副词在从句充当句子成分，连接词whether 和if〔是否〕，as if〔好象〕在从句中不充当句子成分，只起连接作用。

根据句义，如果连接代词与连接副词，whether、if 和as if都用不上时，才用that作连接词〔that本身无任何含义〕。

〔二〕主语从句1、主语从句在复合句作主语。

Who will go is not important. 〔用波浪线标出从句〕2、用it作形式主语，主语从句放在句末。

It doesn’t matter so much whether you will come or not.〔用波浪线标出从句〕3、that引导主语从句时，不能省略。

That he suddenly fell ill last week made us surprised. 〔用波浪线标出从句〕〔三〕表语从句1、表语从句在复合句中作表语，位于系动词之后。

The question was who could go there. 〔用波浪线标出从句〕2、引导表语从句的连接词that有时可省去。

My idea is (that) we can get more comrades to help in the work. 〔用波浪线标出从句〕〔四〕宾语从句1、宾语从句在复合句中作宾语。

英语语法之从句一.名词性从句名词性从句相当于名词，一个从句在整个句子中充当名词的作用，它可以作为主句的主语、表语、宾语和同位语。

1. Who will win the match is unknown.2. I want to know what he has told you.3. The fact is that he had won the game.4. The news that we won the game is exciting.(一)宾语从句宾语从句在复合句中做及物动词的宾语，或用作介词和某些表示心理活动的形容词后作宾语，或是用it 作为形式宾语代表宾语从句。

例:1. I think that it will be of no use.2. It depends on whether the boss will agree to you or not.宾语从句的连接词：that,（常用且一般可省略）who, what, whether/if（是否）which, whoever, whatever ，when, where, how, why.(连接词的选择要看从句的具体意思需要)例：1. I know that you are a teacher.2. I wonder if/ whether you are Mr Li.3. Do you know what I will do next?4. I can guess which team will win.5. I don’t know when he will come.6. I don’t know where he has gone.7. They don’t know how they should help me.8. Please give the book to whoever likes it.Attention:①★宾语从句的语序一定是正常的语序，即陈述句的语序，先主语后谓语。

名词性从句之异同名词性从句可分别作主句的主语、宾语、表语和同位语,在英语阅读和运用中经常遇到，是高中英语中主要学习内容,。

名词性从句在结构上有其许多相似之处,也有一些明显之区别。

一、名词性从句的相同之处1. 关连词相同。

A）连词that，whetherB）连接代词who，what，which，whoseC）连接副词when，where，why，how2．名词性从句均不能用逗号和主句分开。

二、名词性从句句法结构不同用法区别1．主语从句能用it作形式上的主语。

常用以it作形式主语的句型有：①It + be + 形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, quite clear, unusual, etc.) + that从句。

如：It is certain that she will do well in her exam.It is probable that he told her everything.②It + be + 名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.) + that 从句。

如：It's a pity that we can't go.It's no surprise that our team should have won the game.③It + be + 过去分词(said, reported, thought, expected, decided, announced, arranged, etc.) + that从句。

如：It is said that Mr Green has arrived in Beijing.It is reported that China has sent another man-made earthsatellite into orbit.④It + seem, happen等不及物动词及短语+ that从句。

名词性从句一名词性从句包括主语从句、宾语从句、表语从句、同位语从句。

1．主语从句：主语从句在整个句子中作主语。

(1)不同于其它的连词，它不充当句子的成分，只是单纯的连接词，通常不可以省略,有时为了保持句子平衡, that从句后置, 而由it作形式主语。

其他类似句型还有：It + be +important/ necessary/ obvious + that 从句It + be +reported/believed/thought/has been decided + that从句It + be +a pity/a shame/a fact/a surprise/ common knowledge+ that从句It + happens/occurs/seems/appears + that 从句That the driver could not control his war was obvious.It was obvious that the driver could not control his car.(2)if 不能用在主语从句中，而是用whether Whether he left (or not) is unknown(3)当主语从句作主语时，谓语动词一般用第三人称单数What we need is more time and money.What we need are many more books.2.表语从句：表语从句出现在系动词后，充当表语。

其基本结构为: 主语 + 系动词 + that从句。

The trouble is that we are short of money.Go and get your coat. It’s where you left it.3.宾语从句：及物动词，形容词和介词后加宾语从句作其宾语。

(1)宾语从句时态与主句相呼应，但宾语从句表示的是客观真理或普遍现象除外The teacher told us that the earth moves aroundthe sun(2)连词whether和 if可以互换，但注意下列情况连词后紧跟or not时用whether I want to knowwhether or not they will come. 作介词宾语是用whether引导宾语从句He wasinterested in whether he saw her there. 连接词后直接加不定式，不能用if只能用whether Hedoesn’t know whether to stay or not. 如果宾语从句是否定时，一般用if引导I care ifhe will not attend the meeting.(3)当宾语从句后带宾补时，要用“主语+谓语+it +宾补+that-clause,that不可省略I think it certain that she will do well inher exam.(4)当主语是I, we ，主句用think, believe, suppose, expect, imagine五个动词时，用否定转移I don’t think he will win the game, will he?(5)that在宾语从句常可以省略，但由and或 but连接两个或多个宾语从句时，仅可以省略第一个连词that He said (that) he had eaten nothing but that he wasn’t hungry.(6)注意区别if引导的宾语从句和条件状语从句I don’t know if he will come.If he comes, I’ll let you know.注意：beg, insist, desire, command, order, suggest, advise, demand, require, request等动词如果后面加上宾语从句的话, 从句谓语部分必须用should do。

从句名词性从句：就是这个些从句的作用，相当于一个名词，按作用分类分成：主语从句、宾语从句、表语从句、同位语从句。

一、主语从句（名词性从句）：引导词：1、that：万能词2、whether：是否，能否（表示怀疑）3、what：什么，……的东西4、whatever：无论……5、who：谁，（指人）6、whoever：无论谁，任何人7、which：那一个，指代前提提到的东西8、wichever：无论哪一个9、whose：谁的（所有格）10、whom：谁（who的宾格）11、whomever：无论谁，任何人（whoever的宾格）12、how：怎样，用什么方式13、why：为什么14、when：当……时候（表示时间）15、where：在……地点（表示地点）学习心得：从句在复合句中做主语，翻译的时候把一句话，就当一个名词来翻译二、宾语从句（名词性从句）：引导词：1、that：万能词（无意思，只是符号，有的时候会省略）2、who：谁，（指人）3、why：为什么4、when：当……时候（表示时间）5、which：那一个，指代前提提到的东西6、what：什么，……的东西7、how：怎样，用什么方式8、whether：是否，能否（表示怀疑）9、if：如果（表示假设）注：放在非谓语动词（动名词）后面的句子也叫做宾语从句。

如：knowing that………………………………三、表语从句（名词性从句）：引导词：1、that：万能词2、whether：是否，能否（表示怀疑）3、what：什么，……的东西4、whatever：无论……5、who：谁，（指人）6、whoever：无论谁，任何人7、which：那一个，指代前提提到的东西8、wichever：无论哪一个9、whose：谁的（所有格）10、whom：谁（who的宾格）11、whomever：无论谁，任何人（whoever的宾格）12、how：怎样，（表示方式）13、why：为什么（表示原因）14、when：当……时候（表示时间）15、where：在……地点（表示地点）16、as if：好像，似乎（表示可能）17、as though：好像，仿佛（表示可能）学习心得：用句子表示名词，在句中做表语，引导词跟主语从句一样。

名词性从句知识点总结简单1. 主语从句主语从句用来充当主句的主语，常使用的连词有that, whether, if, whoever, whatever等。

例如：- Whether we should go or stay depends on the weather.（我们是该走还是该留，则取决于天气。

）- What you said doesn't matter.（你说的不重要。

）2. 宾语从句宾语从句用来充当主句的宾语，常使用的连词有that, whether, if, wh-疑问词等。

例如：- I don't know what he wants.（我不知道他想要什么。

）- He asked me if I could help him.（他问我是否可以帮助他。

）3. 表语从句表语从句用来充当主句的表语，常使用的连词有that, whether, wh-疑问词等。

例如：- The problem is whether we can finish it on time.（问题是我们能否按时完成。

）- His belief is that everyone should be treated equally.（他的信念是每个人都应该受到平等对待。

）4. 同位语从句同位语从句用来对主句中的某一名词进行进一步解释或说明，一般由that引导。

例如：- The news that he would come back made me happy.（他会回来的消息让我很高兴。

）- I have no doubt that she will succeed.（我毫不怀疑她会成功。

）名词性从句的特点：1. 名词性从句在句子中充当名词的作用，可以充当主语、宾语、表语或同位语。

2. 名词性从句的引导词包括that, whether, if, wh-疑问词等。

3. 名词性从句和关联词的选择要根据从句在主句中的作用来确定。

初中英语名词性从句的用法与例句知识点哎呀，说起初中英语的名词性从句，那可真是让不少同学头疼的一块知识呢。

但别怕，咱们今天就来好好捋一捋，把它给弄明白！先来说说什么是名词性从句。

简单来讲，名词性从句就是在句子中起到名词作用的从句。

就好比一个大家庭里，名词是家里的“顶梁柱”，而名词性从句呢，就像是“顶梁柱”的替身，能在某些时候发挥和名词一样的作用。

比如说主语从句，它在句子中充当主语。

像“ What he said is true ”在这个句子里，“What he said”就是主语从句，整个句子意思就是“他说的是真的”。

你看，这里“他说的”这一部分，本来应该是一个名词，但现在变成了一个句子，来充当主语啦。

再看看宾语从句，它在句中充当宾语。

比如说“ I don't know wherehe is ”“where he is”就是宾语从句，“我不知道他在哪里”，这里“他在哪里”这一整个句子作为“知道”这个动作的对象，也就是宾语。

还有表语从句，在句中充当表语。

像“ The problem is how we can get there ”“how we can get there”就是表语从句，“问题是我们怎么能到那儿”，“我们怎么能到那儿”这部分解释说明了“问题”的具体内容，所以是表语从句。

同位语从句呢，它是对名词的解释说明。

比如“ The news that hewon the game is exciting ”“that he won the game”就是同位语从句，解释说明“消息”的具体内容是“他赢得了比赛”。

接下来给大家分享几个我自己学习名词性从句时遇到的有趣例子。

有一次英语课上，老师在黑板上写了一个句子“ Whether she willco me or not depends on the weather ”然后问大家这是什么从句。

大家都有点懵，我当时心里也在嘀咕：这到底是啥呀？后来老师一解释，原来是主语从句，“Whether she will come or not”这整个部分在句子中充当主语，表示“她是否会来”这件事儿决定于天气。

简单句和名词性从句简单句和名词性从句简单句和名词性从句一、五种简单句句型1. 主语+谓语(vt)+宾语I have a book.2. 主语+谓语(vi) I dance.3. 主语+谓语+宾语1+宾语2（双宾语）4. 主语+谓语+宾语+宾补find I find it difficult.make Reading makes me happy.feel I feel it necessary to do.keep You should keep your room clean.leave We should leave the door open.believe I believe it easy to learn English.think I think itdrive This cough is driving me mad!consider We consider him honest.wish I wish you happy.get I must get the dinner ready.例Laws that punish parents for their little children’s actions against the laws get parents ______.A. worriedB. to worried C worrying D worry5.主语+系动词+表语He is happy. He is a teacher.(1) 状态系动词be keep stay maintain seem appear remain proveThe research proves right.(2) 感官系动词look smell sound taste feel(3) 变成系动词become turn get grow go(1)(2) 无被动无进行例：His method should be popularized; it___ useful.A. provesB. is provedC. has been provedD. is provingThe true author of the book remains___.A. knowB. to knowC. unknownD. knowing知识巩固1. It is a great pleasure to talk with you.A. My grandfather bought me a pair of sports shoes.B. Grandma told me an interesting story last night.C. The cars made in Japan are better than those made in Germany.D. He wrote carefully some letters to his friengs.2. All of us considered him honest.A. She would have made an excellent teacher.B. All the students think highly of his teaching.C. Mary handed her homework to the teacher.D. He asked us to sing an English song.3. She went home very late yesterday evening.A. The May Fourth Movement broke out in Beijing in 1919.B. You must finish reading these books in two weeks.C. Her jobs is to look after the children in the nursery.D. This term I have written three letters to my parents.3. That gentleman can speak three languages fluently.A. At the age of fifteen he become a famous pianist.B. All of us believe that Jack is an honest boy.C. Mary handed the wallet to the schoolmaster.D. The guard ordered us to leave at once.4. He taught me why we should love our country.A. Tomorrow I’ll have someone repair the machine.B. Great changes haven taken place in my hometown in the last 10 years.C. She cooked us a delicious meal.D. We must do whatever the people want us to do.二、名词性从句的基本概念（一）名词性从句的基本概念I know this boy.I know that he came.宾语从句English is interesting.What he said is interesting. 主语从句This is a book.Th is what he likes.表语从句名词性从句有宾语从句、主语从句、表语从句。

that从句的简单判定方法／特点①that引导的句子放在主语，宾语（动词+宾语，介词+宾语），表语（系动词+表语）的位置上就叫主语，宾语，表语从句。

（宾语从句中that可省略）②定语从句：名词+that/which/who/whom/whose+成分不完整的句子（因为that 在定语从句里，做从句的一部分内容，加上that才使从句成为完整的句子结构）从句可理解为：…的，相当于形容词，修饰前面的名词，that作从句的宾语时，可省略The government that/which promises to cut taxes will be popular.承诺减税的政府将会是受欢迎的。

that做从句promise的主语，代指/当the governmentThey read new words that I taught to them last lesson.他们读了我上节课教给他们的新单词。

（teach/taught sth to sb教给某人某物）that做从句taught的宾语，that可省略，因为是从句引导词，所以从taught后提前了，代指/当wordsHe doesn't seem to be the man that he was ten years ago.他好像不是10年前的他了。

that做从句was的表语，因为是从句引导词，所以从was后提前了，代指/当the man③同位语从句：名词+that +成分完整的句子（因为that在同位语从句里，不做从句的内容，只起连接作用，所以后面的从句是完整的句子结构）从句是对名词进行解释说明，说明名词的内容I have an idea that we should go shopping now.我有个想法——我们应该现在去购物。

that后的句子主谓宾结构完整，用来解释说明idea的具体内容The fact that no one is perfect is known to everyone.人无完人——这个事实人人皆知。