名词性从句的定义
名词性从句与主语从句
名词性从句与主语从句在英语语法中，名词性从句和主语从句是重要的从句类型。
它们都属于从属从句，扮演着整个句子的一个成分。
本文将详细介绍名词性从句和主语从句的定义、特点和用法，并举例说明其在实际应用中的运用。
一、名词性从句的定义和特点1. 定义：名词性从句是指在复合句中充当名词成分的从句。
它可以充当主语、宾语、表语和同位语等。
2. 特点：a. 通常由连词that, whether/if, who, whom, which, what, when, where, why, how等引导；b. 在从句中担任名词的职能，整个从句作为整体在句中起到名词的作用；c. 可以替换为一个单词或短语，使句子更加简洁明了；d. 名词性从句的引导词根据从句所充当的成分来选择。
二、名词性从句的用法名词性从句的常见用法包括主语从句、宾语从句、表语从句和同位语从句。
下面将分别进行讲解。
1. 主语从句主语从句在句子中充当主语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
例如： - Whether we can finish the project on time is still uncertain.- That he stole the money is beyond doubt.- How to solve this problem remains a challenge.2. 宾语从句宾语从句在句子中充当宾语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
例如： - She asked me where I had been all day.- I don't know if he will come to the party.- We should consider whether this plan is feasible.3. 表语从句表语从句在句子中充当表语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
名词性从句
名词性从句1.名词性从句的定义名词性从句是起名词作用的从句，这些从句可以作为一个整体来看，其作用就相当于一个名词，在复合句中作主语，宾语，表语和同位语。
名词性从句包括主语从句，表语从句，宾语从句，同位语从句四种。
2.名词性从句的连接词名词性从句通常由一个连接词和主句相连。
连接词很重要，它既是联系主句的纽带，又是从句的标志，通过连接词，我们可以辨认不同从句的性质。
一．从属连接词（在从句中不充当任何成分，只起到连接从句的功能）A．that 只是引导名词性从句，本身并没有实际意义，在从句中不充当任何句子成分。
That he will come to the meeting is certain.(主语从句)The fact remains that we are behind the other group.(同位语从句)B．if和whether具有“是否”的意义，但是whether比较正式，在口语中人们经常if, if 和whether在名词性从句中尽管不充当任何的成分，但不可以省略。
C．whether不能替代if的情况1.if只能引导宾语从句（做介词宾语的情况除外），而whether 可以引导所有的名词性从句。
She asked if/ whether that was enough.Whether the football match will be played depends on the whether.The question is whether we can arrive there on bus.2.whether引导宾语从句做介词的宾语，if没有这种用法It depends on whether it will be fine.3.whether后紧跟不定式He was wondering whether to go home.4.or not 可直接跟在whether后面，但不可以直接跟在if后面。
名词性从句(整理完整版)
名词性从句一、定义：名词性从句在功能上相当于名词，是一个句子分别充当另一个句子的主语、表语、宾语和同位语，由此被称为主语从句，表语从句，宾语从句和同位语从句。
辨别下列从句属于哪种名词性从句并分析：1）Why they haven’t left yet is unclear.2）It was good news that everyone got back safely.3）Polly didn’t know which way she should go.4）I’m interested in who that tall man is.5）We all thought it good news that the fog had finally gone.6）My question is whether Polly can find her way home.7）The fact that Polly didn’t ask for the man’s name is a pity.总结：名词性从句主要由陈述句、一般疑问句、特殊疑问句充当。
1）陈述句充当名词性从句时，由that引导；2）一般疑问句充当名词性从句时，由if或whether引导从句；3）特殊疑问句充当名词性从句时，由疑问词本身做连词引导从句。
4）名词性从句的语序应使用陈述句语序，不可用一般问句语序。
二、引导名词性从句的从属连词及从句语序1.连接词that；功能1）不充当句子成分2）无词义3）只起连接作用。
2.if/whether;功能：1）意为“是否”，有词义2）不做句子成分3）起连接作用翻译:1）I know that he will come thisevening.___________________________________________2) Whether we will go there or not hasn’t been decided yet.______________________________3.连接代词：what(ever), which(ever), who(ever), whom(ever), whose(ver)功能：1）有词义2）引起从句3）且在从句中充当一定的句子成分，常做从句中的主语、宾语、表语和定语。
名词性从句知识点总结
名词性从句知识点总结名词性从句是指在一个句子中扮演名词的角色，作为主语、宾语、表语等成分的从句。
在英语语法中，名词性从句是一个重要的语法结构，掌握好名词性从句的知识点对于提高英语语言水平和理解复杂句子非常有帮助。
本文将对名词性从句的几个主要知识点进行总结。
1. 定义和特点名词性从句是一种从句类型，它在句子中充当名词的角色，可以作为主语、宾语、表语等。
名词性从句通常由连接词引导，如that、whether、if、who、whom、whose、which等。
2. 主语从句主语从句在句子中作为主语，常用连接词that引导。
例如：That heis late is a common problem.（他迟到是个常见问题。
）3. 宾语从句宾语从句在句子中作为动词的宾语，通常由连接词that、whether、if引导。
例如：She asked me if I could help her.（她问我是否能帮她。
）4. 表语从句表语从句在句子中作为表语，常用连接词that引导。
例如：The important thing is that you are safe.（重要的是你安全。
）5. 同位语从句同位语从句在句子中作为对某个名词或代词的解释或说明，通常由连接词that引导。
例如：The fact that she passed the exam is a relief.（她通过考试的事实令人松了一口气。
）6. 后置定语从句后置定语从句在句子中作为对名词或代词的修饰，通常由关系代词引导。
例如：The book that she recommended is very interesting.（她推荐的那本书非常有趣。
）7. 时间状语从句时间状语从句在句子中作为一个时间状语来修饰动词，常用连接词when、while、as、before、after等引导。
例如：He arrived home before it got dark.（在天黑之前他回到了家。
名词性从句讲解与练习
名词性从句（Noun Clause）名词性从句定义：起名词性作用的从句，叫名词性从句。
换言之，在英语的句子结构中，本来该由名词充当的主语、宾语、表语和同位语部分，换由一个句子来充当，这样的句子就是名词性从句。
名词性从句的种类:1. 主语从句：在复合句中充当主语的从句。
e.g. That price will go up is certain.2. 宾语从句：在复合句中作宾语的从句(位于及物动词，介词和形容词后)。
e.g. We hope t hat you will enjoy your stay here.3. 表语从句：在复合句中作表语的从句，放在系动词之后。
e.g. The reason was that he didn’t work hard.4. 同位语从句：在复合句中作名词的同位语的从句。
e.g. He accepted the fact that she would never come back.一、从属连词：that/whether/if1、That we will realize our dreams in the future is certain . （）2、The fact is that he earned his passage by working as an unpaid hand. （）3、I know that well begun is half done . （）4、He heard the news that Liuxiang set a new world record . （）5、Whether she will come back on time depends on weather . （）6、The problem is whether you could give us some valuable advice . （）7、I asked him whether he could do me a favor . （）8、Could you tell me the question whether English is useful for us now. （）9. Let us know whether / if you can finish the article before Friday. （）二、连接代词：who/whom/what/which/whose1、Who will go to the college is still uncertain . （）2、The trouble is who could lend me some money . （）3、He wanted to know who picked up his mobile phone . （）4、Whom you will learn from is worth thinking over . （）5、The thing I am anxious about is whom he will turn to for help . （）6、His mother asked him whom he could believe in . （）7、What I desire to get is a good reputation . （）8、What he will tell me is what I have been expecting to know . （）9、They agree with what I said just now. （）10、Which class is suitable for us isn’t most important . （）11、What he wants to ask you now is which team won the game . （）12、Could you tell me which one is right. （）13、Whose bag was the most beautiful is still unknown now . （）14、The question is whose friends could lend me a hand . （）15、I want to know whose suggestion is more practical . （）三、连接副词：when/where/why/how1、When the m eeting will begin isn’t decided now .（）2、The trouble is when he could recover from the disease . （）3、He asked us when we would graduate from the school . （）1、Where I could buy the book is uncertain now . （）2、His question was where we would hold the opening ceremony . （）3、I couldn’t tell you where they have been living .（）1、Why he killed himself is still a secret now . （）2、What surprised me was why they failed again . （）3、I just want to ask you why I was fired . （）1、How the thief stole the bike is still a mystery . （）2、What the professor asked us was how we could make our parents happy . （）3、I will go to ask my teacher how I could work out the problem . （）实践演练用that / what填空：1.______ he wants is a book.2. ______ he wants to go there is obvious.3. The result is ______ we won the game.4. This is _____ we want to know.5. Is _____ he told us true?6. We should pay attention to ______ the teacher is saying.7. I have no doubt _____ he will come.8. I have no idea _____ he did that afternoon.实践演练1. Mary wrote an article on _________ the team had failed to win the game.2. There is a problem _______ they should continue the work.3. See the flags on top of the building? That was _____ we did this morning.4. Please remind me ______ he was going. I may be in time to see him off.5. A warm thought suddenly came to me ________ I might use the pocket money to buy some flowers for my mother’s birthday.6. Some researchers believe that there is no doubt ______ a cure for AIDS will be found.7. We cannot figure out _______ quite a number of insects, birds, and animals are dying out.8. Parents are taught to understand ______ important education is to their children’s future.9. You are saying that everyone should be equal, and this is _______I disagree.10. You are saying that everyone should be equal, and this is _______I disagree with.。
名词性从句(整理完整版)
名词性从句一、定义：名词性从句在功能上相当于名词，是一个句子分别充当另一个句子的主语、表语、宾语和同位语，由此被称为主语从句，表语从句，宾语从句和同位语从句。
辨别下列从句属于哪种名词性从句并分析：1）Why they haven’t left yet is unclear.2）It was good news that everyone got back safely.3）Polly didn’t know which way she should go.4）I’m interested in who that tall man is.5）We all thought it good news that the fog had finally gone.6）My question is whether Polly can find her way home.7）The fact that Polly didn’t ask for the man’s name is a pity.总结：名词性从句主要由陈述句、一般疑问句、特殊疑问句充当。
1）陈述句充当名词性从句时，由that引导；2）一般疑问句充当名词性从句时，由if或whether 引导从句；3）特殊疑问句充当名词性从句时，由疑问词本身做连词引导从句。
4）名词性从句的语序应使用陈述句语序，不可用一般问句语序。
二、引导名词性从句的从属连词及从句语序1.连接词that；功能1）不充当句子成分2）无词义3）只起连接作用。
2.if/whether;功能：1）意为“是否”，有词义2）不做句子成分3）起连接作用翻译:1）I know that he will come this evening.___________________________________________2) Whether we will go there or not hasn’t been decided yet.______________________________3.连接代词：what(ever), which(ever), who(ever), whom(ever), whose(ver)功能：1）有词义2）引起从句3）且在从句中充当一定的句子成分，常做从句中的主语、宾语、表语和定语。
高二英语 名词性从句
名词性从句学案一、名词性从句的定义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。
名词性从句是一种具有名词功能的非独立分句。
名词性从句主要有四种从句结构：以that引导的从句；以what或wh-ever等引导的从句;以whether/if引导的从句；以特殊疑问词who, how, where, why等引导的从句。
此外，as if/as though也可引导表语从句。
练习：他们不明白我为什么拒绝它。
They couldn't understand __________I refused it.我不知道会议是否会举行。
I have no idea _________ the meeting will be held.他把公司办成了今天这个样子。
He has made the company __________ it is today.很明显，整个项目注定失败。
It is quite clear _________ the whole project is doomed to failure.三、名词性从句的考点考点一、that引导的名词性从句单句语法填空1.________you didn't know the rules won’t be an excuse for your failure.2.It is obvious to the students________they should get well prepared for their future.3.______ is announced in today’s newspaper_______ Xi Jinping will pay a visit to Russia next week.4.I truly believe ________beauty comes from within.5.I find_______necessary_______we should spend more time practising spoken English.6.My decision is ________all of us are to start at 6 o’clock tomorrow morning.7.The manager put forward a suggestion________we should have an assistant. There istoo much work to do.归纳总结：1.that引导名词性从句时不做句子成份，没有实际意义。
名词性从句讲解与练习
名词性从句（Noun Clause）名词性从句定义：起名词性作用的从句，叫名词性从句。
换言之，在英语的句子结构中，本来该由名词充当的主语、宾语、表语和同位语部分，换由一个句子来充当，这样的句子就是名词性从句。
名词性从句的种类:1. 主语从句：在复合句中充当主语的从句。
e.g. That price will go up is certain.2. 宾语从句：在复合句中作宾语的从句(位于及物动词，介词和形容词后)。
e.g. We hope t hat you will enjoy your stay here.3. 表语从句：在复合句中作表语的从句，放在系动词之后。
e.g. The reason was that he didn’t work hard.4. 同位语从句：在复合句中作名词的同位语的从句。
e.g. He accepted the fact that she would never come back.一、从属连词：that/whether/if1、That we will realize our dreams in the future is certain . （）2、The fact is that he earned his passage by working as an unpaid hand. （）3、I know that well begun is half done . （）4、He heard the news that Liuxiang set a new world record . （）5、Whether she will come back on time depends on weather . （）6、The problem is whether you could give us some valuable advice . （）7、I asked him whether he could do me a favor . （）8、Could you tell me the question whether English is useful for us now. （）9. Let us know whether / if you can finish the article before Friday. （）二、连接代词：who/whom/what/which/whose1、Who will go to the college is still uncertain . （）2、The trouble is who could lend me some money . （）3、He wanted to know who picked up his mobile phone . （）4、Whom you will learn from is worth thinking over . （）5、The thing I am anxious about is whom he will turn to for help . （）6、His mother asked him whom he could believe in . （）7、What I desire to get is a good reputation . （）8、What he will tell me is what I have been expecting to know . （）9、They agree with what I said just now. （）10、Which class is suitable for us isn’t most important . （）11、What he wants to ask you now is which team won the game . （）12、Could you tell me which one is right. （）13、Whose bag was the most beautiful is still unknown now . （）14、The question is whose friends could lend me a hand . （）15、I want to know whose suggestion is more practical . （）三、连接副词：when/where/why/how1、When the m eeting will begin isn’t decided now .（）2、The trouble is when he could recover from the disease . （）3、He asked us when we would graduate from the school . （）1、Where I could buy the book is uncertain now . （）2、His question was where we would hold the opening ceremony . （）3、I couldn’t tell you where they have been living .（）1、Why he killed himself is still a secret now . （）2、What surprised me was why they failed again . （）3、I just want to ask you why I was fired . （）1、How the thief stole the bike is still a mystery . （）2、What the professor asked us was how we could make our parents happy . （）3、I will go to ask my teacher how I could work out the problem . （）实践演练用that / what填空：1.______ he wants is a book.2. ______ he wants to go there is obvious.3. The result is ______ we won the game.4. This is _____ we want to know.5. Is _____ he told us true?6. We should pay attention to ______ the teacher is saying.7. I have no doubt _____ he will come.8. I have no idea _____ he did that afternoon.实践演练1. Mary wrote an article on _________ the team had failed to win the game.2. There is a problem _______ they should continue the work.3. See the flags on top of the building? That was _____ we did this morning.4. Please remind me ______ he was going. I may be in time to see him off.5. A warm thought suddenly came to me ________ I might use the pocket money to buy some flowers for my mother’s birthday.6. Some researchers believe that there is no doubt ______ a cure for AIDS will be found.7. We cannot figure out _______ quite a number of insects, birds, and animals are dying out.8. Parents are taught to understand ______ important education is to their children’s future.9. You are saying that everyone should be equal, and this is _______I disagree.10. You are saying that everyone should be equal, and this is _______I disagree with.。
高考英语常考点 名词性从句
高考英语常考点名词性从句一.定义: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，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。
二.分类：（一）主语从句：主语从句即在复杂句中充当主语成分的句子，例如"That he finished writing the composition in such a short time surprised us all"，他在很短的时间内写完作文让我们都很惊讶，此复合句主要描述的是某事让我们惊讶，某事就是该复合句的主语，因此“That he finished writing the composition in such a short time”便是该复合句的主语从句。
连接词：从属连词：that，whether连接代词：who ，whoever，whom ，whose，what，whatever，which，whichever连接副词：when，where ，how，why例句：①It is still a question whether she will come or not.（It做形式主语引导的主语从句）②Whether we will go for an outing tomorrow remains unknown.（whether引导的主语从句）（二）宾语从句:宾语从句是名词性从句的一种。
在主从复合句中充当宾语，位于及物动词、介词或复合谓语之后的从句称为宾语从句。
宾语从句分为三类：动词的宾语从句，介词的宾语从句和形容词的宾语从句。
结构：主语+谓语+宾语（陈述语序）注意：引导词为that ；语序为v.+主语+谓语+由if、whether引导宾语从句；主句为现在时从句为任意时态。
连接词：1.从属连词：连接宾语从句的从属连词主要有that,if,whether，和疑问词（what，how，where，when ...)。
第27讲 名词性从句
名词性从句一、名词性从句的定义和分类名词性从句相当于名词，在句中做主语、表语、宾语和同位语。
因此，名词性从句可分为主语从句、表语从句、宾语从句和同位语从句。
• 1. When we will start is not clear. 主语从句• 2. Mrs. Black won’t believe that her son has become a thief. 宾语从句• 3. My idea is that we should do it right now. 表语从句• 4. I had no idea that you were her friend. 同位语从句二、名词性从句的连接词1 从属连词that / if / whetherthat 无词义，在句中不担任成分；if / whether 有词义，但在句中也不担任成分。
2 连接代词who / whom / whose / what / which有词义，并在句中担任主语、表语、宾语或定语等成分。
3 连接副词when / where / why / how有词义，并在句中担任状语的成分。
三、宾语从句宾语从句可以作及物动词的宾词，介词的宾语，某些形容词的宾语以及非谓语动词的宾语。
引导词有连词that (that 常可省略),whether, if; 代词有who, whose, what ,which；副词when ,where, how, why 等。
1、类型及物动词后的宾语从句：1、由从属连词引导的宾语从句We must never think (that) we are good in everything while others are good in nothing.2、由连接代词引导的宾语从句She will give whoever needs help a warm support.3、由连接副词引导的宾语从句I wonder why she refused my invitation.介词后的宾语从句：1. I always think of how I can improve my spoken English.2. The teacher is satisfied with what she has said.某些形容词后的宾语从句：1. I am sure that you will make greater progress in English through hard work.2. We are surprised that he has left without saying goodbye to us.非谓语动词后的宾语从句：1. Realizing that it was just a difference in custom, the foreigner smiled and said nothing.2. On being asked whether he had had a good time in Australia, he answered “ Terrible ”.形式宾语it 引导的宾语从句，一般谓语动词是及物动词consider、find、make、regard、see、take、think等1.We must make it clear that anyone who breaks the law will be punished.2.I find it necessary that we should ask him for his advice.3.He always takes it for granted that he can pass the exam without hard work.2、语序与时态1）从句要用称述句语序I’m not sure when they will start.He told me why he didn’t come yesterday.2）宾语从句的时态特点宾语从句的时态有时受主句时态的影响。
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名词性从句(Noun Clauses)
定义：包括主语从句、宾语从句、表语从句和同位语从句。
一.主语、表语、宾语、同位语中：从句一律用陈述句语序,即主语在前,谓语在后
【考点1】除（what is the matter……? / what is wrong……?）在名词性从句中,除了关联词要提到句首之外,一律要用陈述句语序
二.主语从句：
主语从句就是在复合句中作主语的名词性从句，为避免主语冗长,句子头重脚轻,经常用it 作形式主语,主语从句放在后面作真正的主语
【考点2】it作形式主语用法
用 it 作形式主语的that- 从句有以下四种不同的搭配关系：
a.it is +形容词 / 名词+that主语从句(should) +do
1)表示动作重要性的形容词和名词,其后的that 从句用(should)+动词原形
It is important / necessary/ essential/… that…
It is suggested (requested, proposed,desired, etc.) that...
2)表示对已知的或已提到的事作出判断和反应的形容词和名词,其后从句用(should)+动原
It is a pity (a shame, no wonder, etc.) that...
It is strange/astonishing /natural that …
b. It + be + -ed 分词+ that-从句
It is believed/known to all /has been decided that…人们相信/众所周知/已决定c. It +不及物动词+ that-分句
It appears/happens/seems that…似乎/碰巧/我突然想起
【考点2补充】：形式宾语的用法
b.it 作形式宾语
1)make /find/ feel / consider / think it + adj / n + that… / to do…
2)it 用于指代后面从句所叙述的内容时，常用于这些动词后:like/dislike/love/hate /appreciate, it 后常直接跟if 或when从句
3) depend on it that…对…不疑;指望…
4) See (to it ) that…务必…留意…
三．宾语从句
【考点3】that的省略
Ⅰ由that引导的宾语从句(that 通常可以省略),
⑴：由连词and连接的两个（或以上）由that引导的宾从中,只有第一个that 可省略.
⑵：that放在句首一般不省略。
Ⅱ it 不仅可以作为形式主语，还可作形式宾语而真正的宾语that 从句则放在句尾。
主+谓+ it +宾补+that从句(真宾) 的句型（这时that也不省略）
Ⅲ作介词的宾语：
That 引导的宾语从句一般不能作介词的宾语——Except in（表示在某一方面时）、but 、beside 这几个词除外（此时that一般不省略，口语的时候可省。
）
例：Hardly a day goes by but that I think of her.It never rains but (that) it pours. Ⅳ作sure, certain, glad等表示情感的形容词的宾语时，（that不省）
四．表语从句
表语从句放在系动词之后，一般结构是“主语＋系动词＋表语从句”.接表语从句的连系动词有be, look, remain, seem等
1.固定句型
The reason …（why）…is that…This / it /that/ is because… 等句型
【考点3】whether和if的用法区别
1)Whether 可以加任意从句，可以跟不定式，可以跟介词。
If 只跟宾语从句，不能跟不定式，不能跟介词，只能跟肯定句。
（即：只在引导宾语从句中两者可互换）
2）if后面一般只跟否定陈述，肯定陈述和选择陈述（即… or not句型）用whethe
3）discuss 后面一般不跟if,跟whether.
四．同位语从句
【考点4】同位语从句和定语从句的区别
同位语从句一般跟在名词fact, news, promise, truth, belief, thought, idea, answer, information, knowledge, doubt, hope, law, opinion, plan, suggestion后面, 用以说明或解释前面的名词的内容.——（that在从句中不充当成分但是不能省。
）
定语从句：对先行词起修饰限制作用（修饰限定；that在从句中有成分、作宾语时可以省。
）【注意】：在have no idea 之后常用wh-引导同位语从句.
五：引导名词性从句的连接词
①连接词：that（不充当成分）
②②连接代词：whether，if，what, whatever, who, whoever, whom, whose, which.(充当主语,宾语,表语等)
③③连接副词：when, where, how, why(在从句中充当状语)
【考点5】：连接词：
A.what,whatever,who,whoever
Whoever,whatever等引导的名词性从句不含有疑问意义，而who ,what等引导的名词性从句都含有疑问意义。
【注意】：Whatever = anything that whoever = anyone who
B.wh-ever 与no matter wh-
wh-ever 既可引导名词性从句又可引导让步状语从句
no matter wh- 只引导让步状丛句（既定条件下已经产生的句子）
——例如：Whatever you did, I will accept.为让步状语从句.
I will except whatever you did.为宾语从句.
【考点6】虚拟语气问题
1.在order，suggest（建议），demand，request，advise，insist(坚持应该)等所接的宾语从句中用should 型虚拟语气。
should 常省略。
2.在order，suggestion等名词后同位语从句，表语从句中用should 型虚拟语气，可省略should
3.在as if，as though引导的表语从句中，在必要的情况下应用过去式虚拟语气。
4.在it is +形容词/名词+that主语从句 (should) +do”,常用的句型见一。
5. wish后，从句中的时态在原本的时态上退一步，即wish that … 过去时…(跟现在相反) / would +v. (跟将来相反)
6. would rather that sb did sth \ sb had done。