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2023年高中英语语法名词性从句精讲之：四大从句用法大全主语从句主语从句的概念：如果一个句子在复合句中充当一个主语，那么这个句子就是主语从句。
主语从句通常由从属连词that，whether，if和连接代词what，who，which whatever，whoever以及连接副词how，when，where，why等词引导。
that在句中无词义，只起连接作用。
主语从句用法：1、主语从句的引导词：主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导：如：That he is still alive is a wonder. 他还活着，真是奇迹。
When we arrive doesn't matter. 什么时候到没有关系。
What we need is money. 我们需要的是钱。
What I want to know is this. 我想知道的就是这一点。
Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
2、主语从句与形式主语it：有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。
这分三种情况：(1)对于以连词that引导的主语从句，通常用形式主语代主语从句：如：It's a pity that he didn't come. 很遗憾他没来。
(2)对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：如：Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
It was a problem whether they would support us. 他们是否会支持我们还是一个问题。
(3)对关系代词型what引导的主语从句，通常不用形式主语，总是主语从句放在句首：如：What we need is money. 我们需要的是钱。
2023年高考英语名词性从句运用分析学习名词性从句应注意的两个问题一、词序问题名词性从句总是用陈述句词序，则不能使用疑问句词序，尤其是当名词性从句由“疑问词”引导时，不能受疑问句的影响而误用疑问句词序：误：I didn’t know where did he live.正：I didn’t know where he lived. 我不知道他住哪儿。
误：Who will he marry remains unknown.正：Who he will marry remains unknown. 他同谁结婚还不知道。
二、时态问题由于由when引导的时间状语从句和以if引导的条件状语从句要用现在时表示将来意义，而不能直接使用将来时态，所以许多同学容易受此影响在when和if引导名词性从句时也用现在时表示将来意义。
请看几题：(1)I don’t know if he ________ or not tomorrow.eesC.willcomeD.is coming此题答案选C，句中if引导的不是条件状语从句(if≠如果)，而是宾语从句(if＝是否)，句意为“我不知道明天他是否会来。
”(2)I don’t know if she ________, but if she ________ I will let you know.es,comes B.will come, will comees, willcome D.will come, comes答案选D，第一个if 引导的是宾语从句，第二个if 引导的是条件状语从句。
(3)“When he _____ is not known yet.”“But when he ____, he will be warmly welcomed.”es,comes B.wi ll come, will comees, willcome D.will come, comes答案选D，第一个when 引导的是主语从句，第二个when 引导的是时间状语从句。
名词性从句定义：拿一个从句当名词用从句：引导词+陈述语气陈述语气：主语在前+谓语在后名词性从句：主宾表同从句1.That TT died is true. 主语从句2.We all know that TT died. 宾语从句3.The fact is that TT died. 表语从句4.The fact that TT died is true.同位语从句，解释前面抽象名词的内容。
引导词四大类1.连词：that2. if / whether3.连接副词：When/where/why/how/which4.连接代词：who/whom/what/whose名从考点：引导词的选择核心：成分缺不缺，含义缺不缺1.that：从句不缺成分，不缺含义，that只起连接作用I know that Tom is ugly.I truly believe ________he is stupid.The trouble is _________I lost my keys.He told me (that) he passed the exam. (that 引导宾从可以省略)2.if/whether:从句不缺成分，缺含义“是否”I wonder if /whether Tom is ugly.She asked me (______I had returned the books to the library ), and I admitted that I hadn't. (_______ the Zoo should be moved ) has caused a heated discussion.注意：在缺“是否”含义时，多多使用whether, 表姐偶尔手痛时不用if1）表：if不引导表从2）姐=介，if不跟在介词后引导从句The teacher worried about whether he had hurt the girl's feelings.3）偶尔=or，if不和or连用Whether they do it or not matters little to us.4）手=首，if 不放在句首引导名从Whether the work can be completed on time is doubtful.5）痛=同，if不引导同位语从句The problem whether we should continue to do the experiment has been solved.3.when/where/why/how:从句不缺成分，缺含义“..的时间”“...的地点”“...的原因”“....的方式”when .....的那个时间I forget when I should be back.where.....的那个地方I forget where I met her.why .....的那个原因I forget why she left.how......的那个方式/怎么I wonder how I can go home.1）_______ the delayed flight will take off depends much on the weather.2）Grandma pointed to the hospital and said, "That's________I was born."3）_______ I live my life is none of your business.4.who/whom/which/what:从句中缺成分，缺含义“的那个人”“哪个”“的东西”who .....的那个人I wonder who killed Tom.Whom.....的那个人I wonder whom Tom killed.Which....哪个which one will win the election is uncertain. What.....的那个东西I don’t know what I can do.注意：whom在从句中只能做宾语，who在从句中主宾都可I know(whom Tom killed).I know(who killed Tom).(Who killed Tom) is Jerry.(Who jerry killed) is Tom.5.补充知识;ever-系列翻译为“无论”whoever/whomever 无论谁whenever 无论何时wherever 无论何地whichever 无论哪个whatever 无论什么1.whoever comes to the club is welcome.2.Whatever is worth doing at is worth doing well.3.They ate whatever they could find on the island.4.You may do whatever you will.5.I will take whichever book interests me.6.You may give the book to whoever wants it. 注：这里不能使用whomever7.You may give the book to whomever you like._______ concerns me most is _______ will be our teacher next term.Courage is doing_______you're afraid to do.名从大练兵【从句完整】1.A warm thought suddenly came to me_________ I might use the pocket money to buy some flowers for my mother’s birthday.2.News came from the school office_______ Wang Lin had been admitted to Beijing University.3.Is there any possibility _________ you could pick me up at the airport?4.We’ve offered her the job, but I don’t know _______she ’ll accept it.5.It doesn’t matter _________ y ou pay by cash or credit card in this store.6.The last time we had great fun when________we were visiting the Water Park.7.The best moment for the football star was________ he scored the winning goal.8.We must find out ________ K arl is coming，so we can book a room for him.9.Tomorrow is Tom’s birthday. Have you got any idea___the party is to be held?10. We haven’t discussed yet______ we are going to place our new furniture.【从句不完整】11.________parents say and do has a life-long effect on their children.12. I like to start my own business—that _________ I do if I had the money.13.It is none of your business____other people think about you. Believe yourself.14.When asked_______they needed most, the kids said they wanted to feel important and loved.15.People in Chongqing are proud of____they have achieved in the past ten years.16.Could I speak to _______ is in charge of International Sales, please?17.The how-to book can be of help to______ wants to do the job.18.We promise__attends the party a chance to have a photo taken with the movie star.19.She is very dear to us. We have been prepared to do______it takes to save her life.20.___team wins on Saturday will go through to the national championships.【名从综合练习】21.I truly believe _________ beauty comes from within.22.The villagers have already known _______ we’ll do is to rebuild the bridge.23.___ ____ was most important to her, she told me, was her family.24.The fact has worried many scientists_______ the earth is becoming warmer and warmer these years.25.As a new graduate, he doesn’t know it takes to start a business here.。
2023年高考英语语法高分必学：名词性从句精讲及专项训练主语从句在复合句中用作主语的从句称为主语从句 (subject clause)。
引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。
如：That they were in truth sisters was clear from the facial resemblance between them.很明显，她们的确是亲姊妹，她们的脸型很相似。
（关联词是从属连词that）Who should be responsible for the senior citizens has been widely discussed in our community.谁应该对老年人负责这个问题在社区里被广泛讨论。
（关联词是疑问代词who）Where we can dispose of the increasing rubbish is a great headache to many governments.在哪儿处置日益增多的垃圾对很多政府而言是件头痛的事。
（关联词是疑问副词where）Whoever pollutes the environment should be punished.不论谁污染环境都应该受到惩罚。
（关联词是缩合连接代词whoever）Wherever you are is my home—my only home.你所在的任何地方就是我的家——我唯一的家。
（关联词是缩合连接副词wherever）有时可以用it作为形式主语，将真实主语从句置于句末。
如：1. It is probable that the nocturnal trades go way back in the ancestry of all mammals.很可能这种夜间的谋生可以追溯至所有哺乳动物的祖先。
2. It should be no surprise then that among mathematicians and architects, left-handers tend to be more common and there are more left-handed males than females.在数学家和建筑学家中，左撇子更常见并且左撇子的男性比女性要多，这并不惊奇。
2023年高中英语语法：名词性从句讲解及考点全攻略复合句之名词性从句讲解复合句由一个主句和一个或一个以上的从句构成，指的是含有两个或更多的主谓结构的句子，其中有一个（或更多）主谓结构充当句子的某一（些）成分，如主语、宾语、表语、定语、状语、同位语等。
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)主语从句作句子主语的从句叫主语从句。
主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。
that在句中无词义，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，在从句中充当从句的成分。
eg. What the baby want to do is not clear.除此之外，还会采用形式主语it句型：(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。
(1)由连接词that引导的宾语从句在demand、order、suggest、decide、insist, desire, request, command, doubt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”。
(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。
2023届高考英语语法难点讲义：名词性从句考点精析1. that省略问题①只有用在单一的宾语从句才可以省略；②而在并列宾语从句和主语从句、表语从句以及同位语从句都不可以省略。
If we are serious about ensuring (that)our science is both meaningful and reproducible, we must ensure (that)our institutions encourage that kind of science.如果我们真的要确保我们的科学既有意义又可复制，我们就必须确保我们的机构鼓励这种科学。
(动词后只有一个宾语从句，that可以省略)To realize how great was the dramatic activity, we must rememberfurther that hosts of plays have been lost, and that probably there is no authorof note whose entire work has survived.要想认识到戏剧活动的伟大之处，我们必须进一步记住，许多戏剧已经消失，而且可能没有一位著名作者的全部作品留存下来。
(remember后面跟着两个宾语从句，that不可以省略)2. whether& if替换问题只有在宾语从句中，whether可以用if替换，但是下面的几种情况例外：①whether or not搭配(三个词紧跟一起只能用whether，如果or not放结尾依然可以使用if替换)；②介词+whether。
③在动词不定式之前只能用whether；④宾语从句放在句首表示强调时，只能用whether；⑤用if引起歧义时，只用whether。
Since our chief business with them is to enable them to share in a common life we cannot help considering whether or not we are forming the powers whichwill secure this ability.由于我们对他们(年轻人)所做的首要工作在于使他们能够在生活中彼此融合，所以我们就禁不住考虑自己是否正在形成一种确保他们获得这种能力的力量。
名词性从句连接词连接词不作任何句子成分，不行省略，只引导从句；that, if, whether连接代词作主语、宾语、表语：what, which, who, whom, whose, whatever, whichever, whoever, whomever连接副词作状语：when, where, why, how, whenever, wherever, however一．主语从句主语从句在句子中作主语，在主语的位置上，或在句末，用形式主语it代替。
从句作主语时，谓语动词为单数。
What I do is a kind of legwork.That s he wants me to be dead worries me a lot.Why he loves me is unknown.When and where he will eat is important.It is a pity that he hates me.It remains to be seen whether/ifhe loves the girl.Tips: 主语从句的that确定不能省去。
1. It 作形式主语——代替主语从句，主要是为了平衡句子结构。
2. 用it 作形式主语的结构(1) It + be+ 名词+that从句It is a pity/ a shame/ a fact / an honor / mon knowledge / no wonder that …(2) It + be+ 形容词+that从句It is necessary/ important/ likely/ certain/ natural / strange that…(3) It + be + 过去分词+that从句It is told/ reported /said / has been proved that…It is suggested/ advised/ requested/ required/ ordered/ insisted that...(should) + do...(4) It + 不及物动词+that从句It seems / appears / happens / matter / remains to be done that…3.主语从句不行位于句首的状况：(1) if 引导的主语从句不行居于复合句句首.(2) It is said (reported) …结构中的主语从句不行提前.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行提前.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行提前.I t 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,主语从句不行提前.Is it likely that it will rain in the evening? (right)Is that will rain in the evening likely? (wrong)【练习】【2021·新高考I卷】______is so breathtaking about the experience is the outofthisworld scenes.1.What二．宾语从句作宾语的名词性从句，常放在主句谓语动词(及物动词) 或介词之后。
高考英语名词性从句讲解及练习一、概念：名词性从句相当于名词词组，在复合句中起名词性作用。
分类：主语从句、表语从句、宾语从句和同位语从句。
引导名词性从句的1）连接词：that, whether, if;2）关系代词：who, whom, whose, what, which, whatever, whichever;3) 关系副词：when, where, how, why.二、要点：人物主语：who, whoever what, whatever宾语：whom, whomever what, whatever名词性从句表语：whom what定语：which what whose状语when where why how whenever however wherever不做成份：that if/whether as if /as though三、基础知识学习：1主语从句: 主语从句是在复合句中代替作主语的名词, 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.that 引导的主语从句①句首That a round-trip to Mars would take more than a year and a half is estimated.That he misunderstood me is obvious.That引导主语从句，放句首，不做任何成分，不可省略。
②用形式主语it来引导句子A. that引导主语从句放句首时，有时会为了避免头重脚轻，保持句子平衡，常用it做形式主语，把真正的that引导的主语从句放句后。
It is strange that he made no answer.It is known to all that the earth is round.B. 用it做形式主语的主语从句结构注意：i. 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。
2023年高中英语语法讲义：名词性从句分析一、主语从句用法归纳1.主语从句概说主句从句即在主从复合句中用作主语的从句。
主语从句通常由连词that、whether、连接代词(which.who等)或连接副词(when, where, why,how等)引导:That he didn't come is a pity. 真遗憾他没有来。
Whether he will win is not known. 他是否会赢还不知道。
How this happened is not clear 这是怎么发生的还不清楚。
When we arrive doesn't matter. 什么时候到没有关系。
What made her angry was not clear.是什么使他哭的还不清楚。
【注】以下引导主语从句的what不表示“什么”，而表示"，所...的”What we need is money. 我们需要的是钱。
What l want to know is this, 我想知道的就是这一点。
2. 主语从句与形式主语it有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语丛句移至句末。
这分三种情况:(1)对于以连词that引导的主语从句，通常用形式主语代主语从句:It's a pity that he didn't come. 很遗憾他没来。
(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句:Whether they will come is a problem. 他们是否会来还是一个问题。
It is a problem whether they will come. 他们是否会来还是一个问题。
(3)对类似以下这样的以what引导的主语从句，通常不用形式主语，总是主语从句放在句首:What he said was true, 他讲的都是事实。
2023年高中英语语法：名词性从句运用及考点名词性从句的基本定义名词性从句，从字面意义上看，它在句子中相当于名字的作用。
名词性从句是历年高考的重点和难点也是热点。
它的英文名称是Noun clause。
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，根据它在句子中不同的语法功能，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。
例如：1. The trouble is that I have lost his address.麻烦的是我把他的地址丢了。
2. My suggestion is that we should tell him.我的建议是我们应该告诉他。
3. You are not who I thought you were.你已不是我过去所想像的人。
4. The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。
5. That’s where I first met her.那就是我第一次遇见她的地方。
6. It isn’t as if you were going away for ever.又不是你离开不回来了。
7. Now it was as though she had known Millie for years.现在好像她认识米莉已有好多年了似的。
8. It is not as though we were poor.又不是我们家里穷。
9. That he is still alive is a wonder.他还活着，真是奇迹。
10. That we shall be late is certain.我们要晚了，这是确定无疑的。
名词性从句分类根据从句在主句中所做的成分，名词性从句可以分为以下4种：例如：（1）That the seas are being over fished has been known for years.海洋正在被人们过渡捕捞，许多年来这已是尽人皆知的事情了。
（2）I have learned that love, not time, heals all wounds.我明白了是爱，而不是时间能治愈一切创伤。
（3）The reason for my return is that I left my keys behind.我又回来，是因为我忘带钥匙了。
（4）An idea came to her that she might do the experiment in another way.她突然想到，她可以换个方法做实验。
名词性从句的重要引导词1. what 用于引导名词性从句是一个十分重要的引导词，它可引导主语从句、宾语从句和表语从句，但不用于引导同位语从句。
它引导的名词性从句有两个意思是：一是表示“什么”，带有疑问意味;二是表示“…所…的”，相当于一个先行词后接一个关系代词。
如：I don’t know what you want. 我不知道你想要什么。
I don’t know what you want is this. 我不知道你所想要的是这个。
2. what 引导名词性从句时可用作限定词，其后修饰名词。
如：I gave him what books I had. 我把我所有的书都给他了。
He gave me what money he had about him. 他把身边带有的钱全给了我。
注：what 后的名词可以是复数名词或不可数名词，但通常不能是单数可数名词，并且后接不可数名词时，有时可有little修饰，两者的区别是：what+不可数名词=所有的都，what little+不可数名词=虽少但全部。
如：What friends she has are out of the country. 她有的那些朋友全在国外。
We gave him what (little) help we could. 我们给了他我们力所能及的帮助。
3. whoever, whatever, whichever 等也可引导名词性从句，其意分别为“所…的一切事或东西”、“任何…的人”、““…的任可人或物”等。
如：Whoever wants the book may have it. 任何人要这书都可拿去。
I’ll do whatever I can to help him. 我们将尽我们所能来挽救他。
Buy whichever is cheapest. 买最便宜的。
注意以下受汉语意思影响而弄错的句子：任何人来都欢迎。
误：Who comes will be welcome. / Anyone comes will be welcome.正：Whoever comes will be welcome. / Anyone who comes will be welcome.另外，它们也可引导让步状语从句，其意为“无论…”、“不管…”，其意相当于 no matter who [what, which]。
如：Whatever happens, you must be calm. 不管发生什么情况，你都必须镇静。
(whatever = no matter what) He won't eat you, whoever he is. 不管他是谁，他也不能把你吃掉。
(whoever = no matter who)注：whoever 既用作主格也用作宾语;作宾语时不宜用 whomever，因为在现代英语中 whomever 这个已几乎废弃不用。
4. why 与 because 的用法区别。
两者均可引导表语从句，但前者强调结果，后者强调的原因。
如：I had a cold. That’s why I didn't come. 我感冒了，因此我没来。
I didn’t come. That’s because I had a cold. 我没有来，那是因为我感冒了。
名词性从句学习中的易错点总结在学习名词性从句之前，我们首先要明白一个词：复合句什么叫复合句由一个主句和一个或一个以上的从句构成的句子叫复合句。
在复合句中主句是全句的主体，从句是全句的一个成分，不能独立。
从句通常是用关联词来引导的。
在这里关联词还起联系从句和主句的作用。
一、从句的种类：主语从句、宾语从句、表语从句、同位语从句，定语从句和状语从句二、名词性从句的连接词1. 单纯连词在从句中不补充当任何成分，只起到连接从句的功能。
that 没有实际意义，而whether/ if 在句子中表示“是否”的意义。
Eg : That the prices of rice will go up is certain. (that引导主语从句，补充当任何成分)He asked if I could come to see him this weekend.形式主语it 代替主语从句位于句首时，常见的几种情况：①It + adj +that 从句(大多数情况下that 从句后用should+动词原形)Adj: necessary right clear unlikely strange ob vious natural importantEg: It is necessary to learn English well.②It +系动词+名词+that 从句Non: a pity an honor good news a wonder a fact no wonder no surpeiseEg: It is a fact that you are a good boy.③ It +be + 过去分词+that从句过去分词：said / heard/ reported/ told/ decided/suggested/thought/considered/ hoped/ announcedEg: It is announced that the plan has been canceled.注意：It + be+ suggested/ advised/ ordered/ requested/ insisted/ demand+ that从句， that从句要用should +动词原形，should可以省略。
Eg: It is suggested that you (should ) spend more time in studying English .当suggest表示“表明”时，不可以用虚拟语气Eg: It suggests that you are an honest boy.Insist 表示“坚持某种说法（事情已经发生过了）”，不用虚拟语气。
表示“坚持要做（事情没有发生）”，要用虚拟语气。
Eg: she insisted that I have never donesuch thing .She insisted that I study abroad.④It +动词（+宾语或状语）+that 从句动词如：appear(显得)/ happen(碰巧)/ matter(重要)/ occur(出现)/ turn out(结果是)Eg: It happened to me that I was away when he came.主语从句不可位于句首的五种情况：注意：（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。
正确表达：It is said that President Jiang will visit our school next week.错误表达：That President Jiang will visit our school next week is said.（3）It happens/occurs?结构中的主语从句不可提前。
正确表达：It occurred to him that he failed in the examination.错误表达：That he failed in the examination occurred to him.（4）It doesn’t matter how/whether ?结构中的主语从句不可提前。
正确表达：It doesn’t matter whether he is wrong or not.错误表达：Whether he is wrong or not doesn’t matter.（5）含主语从句的复合句是疑问句时，主语从句不可提前。
