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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。
名词性从句的用法名词性从句是在句子中充当名词的成分的从句。
名词性从句可以作为主语、宾语、表语或补语，常见的名词性从句有宾语从句、主语从句、表语从句和同位语从句。
1. 宾语从句（Object Clause）：宾语从句在主句中充当宾语的角色。
一般引导宾语从句的词包括that, whether, if, why, how, when, where, who, whom 等。
示例：I don't know where he lives.（我不知道他住在哪里。
）2. 主语从句（Subject Clause）：主语从句在句子中充当主语的角色。
常用的引导词有that, whether, if, what, who, which, where, how 等。
示例：What she said surprised me.（她说的话让我很惊讶。
）3. 表语从句（Predicate Nominative Clause）：表语从句在句子中充当表语的角色。
一般由连词that 或whether 引导，也可以由who, whom, whose, which 等引导。
示例：His dream is that he can become a famous singer.（他的梦想是成为一名著名的歌手。
）4. 同位语从句（Appositive Clause）：同位语从句用来解释、说明和限制先行词的意义。
它与先行词之间往往用连词that 或whether 连接。
示例：The news that he had won the prize made everyone happy.（他获奖的消息让大家都很高兴。
）。
名词性从句的用法和特殊引导词和名词性从句在句子中的位置和作用名词性从句的用法和特殊引导词以及名词性从句在句子中的位置和作用名词性从句是指在句子中充当名词的从句。
它可以作主语、宾语、表语、同位语等，在英语中被广泛应用。
本文将介绍名词性从句的用法以及特殊引导词，并探讨名词性从句在句子中的位置和作用。
一、名词性从句的用法名词性从句可以用来代替句子中的名词，并在句中担任特定的语法角色。
主要有以下几种用法：1. 主语从句：名词性从句作主语，位于主句的动词之前，如：- What you said is true.（你说的是真的。
）- Whether she will come is still unknown.（她是否会来仍然是未知的。
）2. 宾语从句：名词性从句作及物动词或介词后的宾语，如：- I don't know what to do.（我不知道该怎么办。
）- They asked me where I was going.（他们问我要去哪里。
）3. 表语从句：名词性从句作连系动词后的表语，如：- The most important thing is that you are safe.（最重要的是你平安。
）- My wish is that everyone can live a happy life.（我的愿望是每个人都能过上快乐的生活。
）4. 同位语从句：名词性从句作另一个名词的同位语，如：- The fact that he made a mistake surprised everyone.（他犯了一个错误这个事实令人惊讶。
）- Her belief that honesty is the best policy is well-known.（她认为诚实是最好的策略，这一观点很有名。
）二、特殊引导词名词性从句有一些特殊的引导词，根据从句的不同用法选择相应的引导词。
以下是常见的特殊引导词：1. 作主语从句的引导词：- that: He said that he would come.（他说他会来。
名词性从句解析名词性从句是英语中一种重要的从句结构，它在句子中充当名词的成分。
名词性从句可以作为主语、宾语、表语和同位语，它的引导词包括连接代词和连接副词。
名词性从句可以帮助我们丰富句子结构，增强表达的准确性和多样性。
接下来，本文将对名词性从句进行详细解析，并给出一些例子来说明其用法。
一、名词性从句作主语名词性从句作主语时，常用的引导词有：that、whether、if、what、who、which等。
以下是几个例子：1. That he is innocent is beyond doubt.（他无辜是毫无疑问的。
）2. Whether he will come to the party is still uncertain.（他是否会来参加派对还不确定。
）3. If she can finish the work on time remains to be seen.（她能否按时完成工作还有待观察。
）4. What you said doesn't make any sense.（你说的话没有任何意义。
）5. Who will be the next president is under discussion.（谁将成为下一任总统正在讨论中。
）二、名词性从句作宾语名词性从句作宾语时，常用的引导词有：that、whether、if、what、who、which等。
以下是几个例子：1. He knows that I am telling the truth.（他知道我说的是真话。
）2. I'm not sure whether it will rain tomorrow.（我不确定明天是否会下雨。
）3. I wonder if he has received my email.（我想知道他是否收到了我的电子邮件。
）4. Please tell me what you want for dinner.（请告诉我你想要吃什么晚餐。
名词性从句的用法解析名词性从句是英语语法中的一种特殊结构，它在句子中扮演名词的角色。
名词性从句可以作主语、宾语、表语和补语，它的引导词通常包括“that”、“whether/if”、“wh-”疑问词以及“whoever”、“whatever”、“whichever”等。
1. 名词性从句作主语名词性从句可以作整个句子的主语，常见的引导词是“that”和“whether/if”：例句1：That he is late again is a disappointment to me.例句2：Whether/if she will attend the meeting is still uncertain.2. 名词性从句作宾语名词性从句可以作及物动词或介词的宾语，常见的引导词有“that”、“whether/if”以及wh-疑问词：例句1：He doesn't know whether/if he should accept the job offer.例句2：I doubt that they will arrive on time.例句3：She is worried about what will happen tomorrow.3. 名词性从句作表语名词性从句可以作句子中的表语，常见的引导词有“that”、“whether/if”以及wh-疑问词：例句1：His main concern is that he won't have enough time to finishthe project.例句2：The question is whether/if she can handle the responsibility.4. 名词性从句作补语名词性从句可以作某些动词的表语补语，通常以“that”引导：例句1：She considered it necessary that he should apologize.例句2：He made it clear that he didn't want to participate in the discussion.需要注意的是，在名词性从句中，有时候可以省略连词或引导词，尤其是在口语中。
完整版)名词性从句用法归纳名词性从句是指在句子中作名词角色的句子，可以充当主语、宾语、表语、同位语、介词宾语等。
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。
引导名词性从句的连接词可以分为三类。
第一类是从属连词，包括that、whether和if。
在宾语从句或表语从句中，that 有时可以省略。
第二类是连接代词，包括what、who、which 等。
这些代词在从句中做成分，不可以省略。
第三类是连接副词，如when、where、how等，也不可以省略。
在一些情况下，that可以省略，如定语从句中做宾语、引导宾语从句或表语从句时。
但在定语从句中做主语、由that引导同位语从句时，以及宾语从句中真正的that不可以省略的情况下，that不能省略。
主语从句是指作句子主语的从句。
主语从句通常由从属连词that、whether等，连接代词what、who、which等，以及连接副词how、when、where等引导。
2、连接词的使用：连接词在句子中起到连接的作用，其中that在句子中没有实际的意义，只是起到连接从句和主句的作用。
而连接代词和连接副词则在句子中既保留了自己的疑问含义，又起到连接从句和主句的作用，同时在从句中充当从句的成分。
例如，whom和who指人，what指物，而XXX和whoever则表示泛指意义。
举个例子，What he wants to tell us is not clear.表示他想告诉我们什么并不清楚。
另外，为了避免句子头重脚轻的情况，有时我们会用形式主语it代替主语从句，并将主语从句放在句末。
这种情况下，主语从句后的谓语动词一般使用单数形式。
常用的句型有：（1）It + be +名词+ that从句，如It is a fact that（事实是）；（2）It + be +动词的过去分词+ that从句，如It is said that（据说）；（3）It +不及物动词（vi）+ that从句，如It seems that （似乎）；（4）It + be +形容词+ that从句，如It is naturalthat（很自然）。
名词性从句的语法解析名词性从句是指在句中充当名词的成分的从句，可以作主语、宾语、表语、同位语等。
名词性从句的引导词有“从属连词”和“连接代词”两种。
一、主语从句主语从句在句中充当主语，常引导主语从句的连接词有“that”和“whether/if”。
其中，“that”在口语中常省略，而“whether/if”则一般用于句中有“or not”时。
例如：1. That he passed the exam is good news.（非正式：He passed the exam is good news.）2. Whether he will come to the party is still uncertain.（非正式：If he will come to the party is still uncertain.）二、宾语从句宾语从句在句中充当宾语，常引导宾语从句的连接词有“that”、“whether/if”、“what”和“who/whom”。
其中，“that”在口语中常省略。
例如：1. She said that she would go shopping later.（非正式：She said she would go shopping later.）2. I don't know whether/if he is coming to the party.（非正式：I don't know if he is coming to the party.）3. She asked me what I wanted for dinner.4. He asked who/whom I was talking to on the phone.三、表语从句表语从句在句中充当表语，常引导表语从句的连接词有“that”、“whether/if”和“what”。
例如：1. The important thing is that we are safe.（非正式：The important thing is we are safe.）2. The question is whether/if he will pass the exam.3. The problem is what we should do next.四、同位语从句同位语从句通常用来进一步解释说明某个名词或代词指代的内容，引导同位语从句的连接词有“that”、“whether/if”、“what”、“who/whom”等。
高中英语知识点归纳名词性从句的用法名词性从句是英语中一个重要的语法结构，它可以在句子中充当名词的作用。
名词性从句可以作主语、宾语、表语和同位语等，它的引导词有很多种，比如that, whether, who, whom, whose, which, what, when, where等。
本文将对名词性从句的用法进行归纳总结。
1. 名词性从句作主语名词性从句作主语时，常用it代替整个从句，并将从句放在句子的后面。
例如：It is important that we learn English well.（我们学好英语很重要。
）2. 名词性从句作宾语名词性从句作宾语时，常与一些动词或介词搭配使用。
例如：I believe that he will come.（我相信他会来。
）She is not sure whether he likes her or not.（她不确定他是否喜欢她。
）They asked me what time the train would leave.（他们问我火车什么时候开。
）3. 名词性从句作表语名词性从句作表语时，常用it代替整个从句，并将从句放在句子的后面。
例如：The important thing is that we try our best.（重要的是我们尽力。
）4. 名词性从句作同位语名词性从句作同位语时，修饰前面的名词，起进一步说明或解释的作用。
例如：The fact that he lied surprised me.（他撒谎的事实使我吃惊。
）除了以上几种常见的使用方式，名词性从句还有一些特殊的用法。
5. 名词性从句与疑问词连用名词性从句与疑问词连用时，疑问词可以是关系代词或关系副词，例如：I don't know who will come.（我不知道谁会来。
）Please tell me where you were last night.（请告诉我你昨晚在哪里。
名词性从句用法一、概念名词性从句，即指____________________ 的从句，它包括__________ 、__________ 、__________ 和__________ 。
从高考的考查的实际情况来看，名词性从句考得最多的是宾语从句，其次是主语从句，再次是表语从句，而同位语从句则很少考查。
二、名词性从句的一般引导词1. 连接词______只起______作用，及____________，也不____________，在______中可______，但引导其他名词性从句时通常______。
如：I hope______ you enjoy your holiday.______ he likes you is very obvious.2.连接词______也不充当句子成分，但有自己的意思，表示“是否”；引导____________时，可换成______，但引导其他名词性从句时不能换成 if。
He asked ____________ I would show him the way.______ it will do us harm remains to be seen.3. 连接代词 who(m), whose, which, what 等，均有各自的意义，在从句中作主语、宾语、定语等。
如：That’s______ she wanted to leave.______ we arrive doesn't matter.Tell me ______ one you like best.4. 连接副词 when, where, why, how 等，也各自有自己的意义，在从句中作状语。
如：The question is______we should carry out the plan.______she’ll be back depends much on the weather.______ he did it will remain a puzzle forever.三、名词性从句的重要引导词1.______可引导______从句、______从句和______从句，但不用于引导______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。
I don’t kn ow______you want.I don’t know ______you want is this.2.what 引导名词性从句时可用作限定词，其后修饰名词。
I gave him what books I had.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.We gave him what (little) help we could.What 用法归纳1. 表示“……的东西或事情”：They’ve done what they can to help her.He saves what he earns.。
What Mary is is the secretary.2. 表示“……的人或的样子”：He is no longer what he was.He is what is generally called a traitor.Who is it that has made Fred what he is now?3. 表示“……的数量或数目”：Our income is now double what it was ten years ago.The number of the students in our school is ten times what it was before liberation.4. 表示“……的时间”：After what seemed like hours he came out with a bitter smile.The young girl was too frightened to speak, standing there for what seemed like hours.5. 表示“……的地方”：This is what they call Salt Lake City.In 1492, Columbus reached what is now called America.that与what引导名词性从句的区别that引导名词性从句只起连接作用，在从句中不作任何成分，无意义，在宾语从句通常省略，但在主语从句、表语从句和同位语从句中均不能省略；what除引导从句外，还在从句中作成分，意为“所……的(东西)”，在含义上等于“名词+that”。
如：1. ______she lacks experience is obvious.2. The police learned______ he wasn’t there at that time.3. He realized ______she too was exhausted.4. My idea is ______ you shouldn’t have left the country.5. Bob has the mistaken idea ______ tomorrow is a holiday.6. It was quite plain ______ he didn’t want to come.7. It is natural ______ they should have different views.8. ______ (=The thing that) he said was true.9. ______ he had hoped at last came true.10. ______ he said is beneath contempt.11. ______ he says is true, possibly.12. ______she saw gave her a fright.13. ______I want to say is this.14. I’m sorry for______ I said.15. That’s ______ I want to know.16. You had better hear______ I have to say.17.I managed to get______I wanted.18. It was ______ he meant rather than ______he said.19. There’s something in______ he says.20. Her interest was roused by ______he said.21. He was always conscious of the fact______she did not approve of ______ he was doing.注：that 可引导同位语从句，what不能whatever, whoever, whichever引导名词性从句1. whatever引导的名词性从句Whatever的意思是“所…的一切事或东西”，可视为what的强调说法，其含义大致相当于anything that，whatever在从句中可用作主语、宾语、定语：Whatever he did was right.Give them whatever they desire.I will just say whatever comes into my mind.Goats eat whatever (food) they can find.I’m going to learn whatever my tutor wishes.He does whatever she asks him to do.Talk to me about whatever is troubling you.One should stick to whatever one has begun.She would tell him whatever news she got.You can have whatever allowance you like.2. whoever引导的名词性从句whoever的意思“任何…的人”，在意义上大致相当于 anybody who。
whoever在从句中可用作主语或宾语：I’ll take whoever w ants to go.She can marry whoever she chooses.Whoever wants the book may have it.Whoever comes will be welcome.Whoever you invite will be welcome.Whoever breaks this law deserves a fine.I’ll give the ticket to whoever wants it.【注意】(1)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 已几乎不用)。
(2) 注意以下受汉语意思影响而弄错的句子：误：Who wins can get a prize. / Anyone wins can get a prize.正：Whoever wins can get a prize. / Anyone who wins can a prize. 谁赢了都可以获奖。
whatever与no matter whatIt is generally considered unwise to give a child __________ her or she wants.A. whateverB. no matter whatC. wheneverD. no matter whenno matter what 只能引导__________，而不引导__________。
而 whatever 既可引导__________ (＝anything that)，也可引导__________ (＝no matter what)：1. 引导名词性从句只用whatever：无论他做什么都是对的。
