(完整word)高中英语语法解析---名词性从句
【语法讲解】高中英语--名词性从句专题讲解(详细)
Manypeoplebelievethatrobotswilldo most of our work.
whether/if引导的宾语从句
1）可用whether/if的情况
whether/if常放在ask, care, wonder, find out等后引导宾语从句。whether/if在从句中不作成分，但是有“是否”含义，不可省略。
It occurred to me that we should get in touch with the manager.
whether/if引导的主语从句
whether引导的主语从句即可以放在句首，也可以放在句末，但if引导的主语从句只能放在句末，前面需用it作形式主语。whether，if只起连句中不作成分，且不可省略。
Iaskedthem whether/if they would win the match.
Do you care whether/if you win?
2)只用whether不用if的情况
引导介词后的宾语从句时。
Itdepends on whether it will snow tomorrow.
Wedoubt whether he will keep his promise.
宾语从句前置，置于句首时。
Whetherthey can come here on time, we don’t know.
连接代词或连接副词引导的主语从句
1）连接代词what, who, whom, , whose, which , whatever, whoever, whichever等在从句中作主语、宾语、表语、定语,不可以省略。
高中英语语法名词性从句
There is no scientific proof for the idea that time travel is possible.
5.C__h_in_e_s_e__s_tu_d_e_n_t_s_s_h_o_u_l_d_b__e_g_i_ve__n_m__o_re__fr_e_e__ti_m_e_._/
What surprised me most waC(表sla语uths从ea句t t)he old man couldn’t see anything.
Subject Clause
The fact that Polly didn’t ask fo(主r 语th从e句m) an’s name
is a pity.
主语
第五页，共55页。
例:他住在哪里我们都不知道。
Where he lives is unknown to us.
主语
例:不太清楚她为什么迟到。 Why she was late is unclear.
主语
例:这本书怎么销售取决于它的作者。
How the book will be sold depends on its writer .
5 Whoever comes is welcome.
6 How we can help the twins will be discussed at the meeting.
7 When they’ll start the project has not been decided yet.
第七页，共55页。
3.It has not been decided yet when they’ll start the project.
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。
高中英语语法解析---名词性从句
高中英语语法解析---名词性从句2. 用it 作形式主语的结构(1) It is ＋名词＋从句It is a fact that …事实是…It is an honor that …非常荣幸It is common knowledge that …是常识(2) It is ＋形容词＋从句It is natural that…很自然…It is strange that…奇怪的是…(3) It is ＋不及物动词＋从句It seems that…似乎…It happened that…碰巧…It appears that…似乎…(4) It ＋过去分词＋从句It is reported that…据报道…It has been proved that…已证实…It is said that…据说…（2）It is said /reported…结构中的主语从句不可提前。
例如：正确表达：It is said that President Hu will visit our school next week. 错误表达：That President Hu will visit our school next week is said. （3）It happens/occurs…结构中的主语从句不可提前。
例如：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.(3) 动词＋间接宾语＋宾语从句。
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,
高中英语八大语法全解析
高中英语八大语法的详细解析1.名词性从句：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。
这些从句在句子中起名词的作用，可以担任主语、表语、宾语和同位语。
例如：“What he said is true.”（主语从句）“The problem is who we can get to replace her.”（表语从句）“I suggest that we should try again.”（宾语从句）“The news that we won the game is exciting.”（同位语从句）2.定语从句：定语从句包括限制性定语从句和非限制性定语从句。
限制性定语从句对先行词进行限制，非限制性定语从句对先行词进行补充说明。
例如：“The book that I read is called ‘Harry Potter’.”（限制性定语从句）“The book, which I read last night, is called ‘Harry Potter’.”（非限制性定语从句）3.状语从句：状语从句包括时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句、条件状语从句和让步状语从句。
这些从句在句子中起副词的作用，表示时间、地点、原因、目的、结果、条件或让步。
例如：“When it rains, I usually stay at home.”（时间状语从句）“I will go to the library, where my friend works.”（地点状语从句）“She failed in the exam because she didn’t study hard enough.”（原因状语从句）“We went for a walk to get some fresh air.”（目的状语从句）“He was late for school, so he couldn’t take the exam.”（结果状语从句）“If you study hard, you will pass the exam.”（条件状语从句）“Though he is poor, he is still happy.”（让步状语从句）4.主谓一致：主谓一致是指谓语动词与主语的数目和人称保持一致。
高中英语语法---名词性从句详解
名词性从句详解名词性从句包括主语从句、表语从句、宾语从句、同位语从句。
其关联词有连接词that，if，whether；疑问代词who，what，which和疑问副词when，where，how，why等。
一.语法讲解1.主语从句主语从句在句中做主语。
它可以放在主句谓语动词之前，但多数情况由it作形式主语，而把主语从句放在主句之后。
例如：Who did that is known to all.It is interesting that you should like him.2.表语从句表语从句在句中作表语，位于主句中的系动词之后。
如：The question is who can complete the difficult task.表语从句不能用if引导，但可用as if引导。
例如：He looked as if he was going to cry．3.同位语从句同位语从句跟在名词后面，进一步说明该名词的具体内容。
引导同位语从句的名词主要有fact，news，promise，idea，truth等。
连接词用that（不用which），及连接副词how，when，where，why等。
例如：His delay is due to the fact that the car went wrong halfway．The news that our team has won the match is true.She asked the reason why there was a delay．4.宾语从句1.宾语从句在句中作及物动词或介词的宾语。
例如：We can learn what we did not know．He will talk to us about what he saw in the U.S.如果主句的谓语动词是及物动词make，find，see，hear等，则把宾语从句置于宾语补足语之后，用it作为形式宾语。
(完整word版)高中英语名词性从句讲解
合用文档名词性从句讲解在复合句中起名作用的从句叫做名性从句。
它包括主从句、从句、表从句和同位从句。
名性从句是中学段的一个重要法目，在年的高考中几乎都涉及到，并且每年的命各有化。
分析届高考名性从句考的焦点主要有以下六个方面1.考名性从句的序2.考引 that与 what 的区3.考 it 在名性从句中作形式主或形式的用法4.考 whether 与 if 的区5.考名性从句中的疑+ever 引的名性从句与no matter+ 疑引的状从句的区6.考名性从句的虚气法要点分析一、名性从句主从句、表从句、从句、同位从句，在整个句子中所起的作用，相当于一个名。
因此，四种从句通称名性从句。
引名性从句的接可分三：接： that, whether, if〔不充当从句的任何成分〕接代： what, whatever, who, whoever, whom, whose, which.接副： when, where, how, why1.主从句作句子主的从句叫主从句。
主从句平时由隶属that ，whether ，if和接代what ，who，which ，whatever ， whoever 以及接副 how， when， where， why 等引。
that 在句中无，只起接作用；接代和接副在句中既保存自己的疑含、又起接作用，在从句中充当从句的成分。
比方：What he wants to tell us is not clear.他要跟我什么，不清楚。
It is known to us how he became a writer.我都知道他是怎样成一名作家的。
Where the English evening will be held has not yet been announced.英晚会将在哪里行，没有宣布。
有防范句子重脚，常用形式主it代替主从句作形式主放于句首，而把主从句置于句末。
主从句后的一般用数形式。
(完整版)高中英语名词性从句详解
(完整版)高中英语名词性从句详解名词性从句【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。
宾语从句——在复合句中作主句及物动词的宾语，也可作介词或某些形容词的宾语1。
连接词从属连词that whether if 不担任成分只起连接作用关系代词who whom whose whatwhich既担任成分，又起连接作用。
主语,宾语或表语等关系副词when where why how 既担任成分，又起连接作用常担任状语◆I think (that） you will like the pictures。
◆ He has become what he wanted to be ten years ago。
◆ I don't know why Jane was late for school this morning。
◆The teacher is pleased with what she said。
◆I’m afraid that I can’t go to the party。
2.注意事项(that通常可以省略）。
但如从句是并列句时，第二个分句前的that 不可省。
◆He told me (that） he was ill and that he would not come to the party。
②陈述语序◆ I want to know what he has told you。
◆ She will give whoever needs help a warm support。
③注意宾语从句中的时态呼应。
当主句动词是现在时,从句根据自身的句子情况,而使用不同时态。
当主句动词是过去时态（could, would除外），从句则要用相应的过去时态,如一般过去时,过去进行时，过去将来时等；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。
高考英语复习语法知识专题讲解15---名词性从句(解析版)
高考英语复习语法知识专题讲解专题十专题十五五 名词性从名词性从句句名词性从句的句法功能相当于名词词组，在句中充当主语、宾语、表语、同位语、介词宾语等。
因此名词性从句又分为主语从句、宾语从句、表语从句和同位语从句。
类别功 能 引 导 词 从属连词只起连接作用，不充当句子成分 that, whether, if 连接代词 起连接作用，并充当主语、宾语、表语或定语 who, whom, whose, which, what, whatever, whichever,whoever连接副词 起连接作用，并充当从句状语when, where, how, why 一、主语从句的易错点主语从句的一般结构主语从句＋谓语动词＋其他 How the book will sell depends on its author. That he is the best student in the class is obvious.it 作形式 主语时的主语从句 It+be/becomes/became+形容词／名词／过去分词＋主语从句 It is still a question whether she will come or not. It became clear that Mary did make a mistake. It seems/ appears/ happens 等动词＋that 从句 It seems strange that he should have done a thing like that. It happens that he can understand a little about thelanguage. It remains to be+过去分词＋主语从句It remains to be seen who will be the victor in the contest.It doesn't matter +how/whether 从句 It doesn't matter whether he is wrong or not.It doesn't matter much whether we go together orseparately.用来表示惊奇、怀疑、惋惜、理应如此等语气时，主语从句谓语动词用（should) do 形式 It is necessary /important / natural /strange 等＋that 从句It is necessary that one(should)obey the law.It is suggested /requested /proposed/desired 等＋that 从句It is suggested that you (should) attend the openingceremony.二、宾语从句的易错点动词后的宾语从句主语＋及物动词＋宾语从句I know that he is an honest boy.Can you tell me how I can get to the zoo?I wonder if/whether you have told the news to Li Lei.They asked what Jean was doing now.Do you know who has won Red.Alert game?feel, think, find, consider, make等，常用it作形式宾语，宾语从句后置I find it important that.we should keep calm in danger.You may think it strange that he would live there.I feel it a pity that I haven't been to the get-together.I have made it a rule that I keep diaries.like, dislike, love, hate, enjoy,appreciate等不能直接跟宾语从句，必须用it作形式宾语，后接宾语从句I like it that everyone passed the exam.I hate it when they talk with their mouths full of food.think, believe, suppose, 等词后的宾语从句若是否定的，否定词要转移到主句的谓语动词上I don't think your answers are right.I don't believe that man is killed by Jim, is he?介词后的宾语从句介词后可接宾语从句，但连接词whether 不可换作ifHe often thinks of how he can make his class lively.She worries about whether she's really good enough.非谓语动词之后的宾语从句不定式、v.-ing形式、过去分词后也可以接宾语从句I'd just tried to do what I could for you.I suggest eating what is fresh.宾语从句中的时态主句谓语动词为一般现在时，从句时态根据实际情况而定Do you know when the ancient games began?主句谓语动词是一般过去时，从句的时态一般用适当的过去时态He asked me if I was reading the textbook when he wasin.当宾语从句为客观真理和规律时，则用一般现在时He said that light travels faster than sound.whether与if 引导宾语从句的区别与 or not 连用时，只用 whether I want to know whether or not the train goes to KingStreet.＂whether+不定式”结构作宾语，相当于一个宾语从句；if无此用法I don't know whether to go there.介词后面的宾语从句中只用whetherI'm not interested in whether he has a lot of money.if引导的条件句中，如果再有表示“是否”的引导词引导宾语从句时，只用 whetherHe asked me whether I'd move to Beijing if I got the job.doubt 在肯定句中，接whether 和if引导的宾语从句；但在否定句中，只用 thatWe don't doubt that he is a brave man.I doubt whether/if Jack could manage a sailing boat.三、表语从句的易错点表语从句常位于连系动词be, look, remain, seem等之后，其连接词还有as if/though,because等主语＋系动词＋表语从句The trouble is that we are short of money.He looked just as he had looked ten years before. The question is whether they will be able to help us. The problem is who we can get to replace her.I think it is because you are doing too much.The question is which of us should go.because 引导表语从句强调原因，why引导表语从句强调结果It's because you're careless.That is why stone walls are used instead of fences around New England fields.the reason why 从句＋be + that 从句The reason why he was absent was that he was ill.what 从句＋be+that从句What comforted the young mother was that the babycame to life.It looks/seems as if/though 从句It looks as if it is going to rain.At that time, it seemed as if I couldn't think of the right word anyhow.主句主语是advice, demand, suggestion, order，requirement, idea, request，command等时，表语My advice is that you(should)quit smoking.从句用虚拟语气，即谓语动词用（should)do 形式My suggestion is that we(should)start early tomorrow. Our only request is that this(should)be settled as soon as possible.四、名词性从句其他易错点that与what 在名词性从句中的区别what 充当成分，意为...的事物不可省略；that 不作任何成分，只起连接作用，也无实际意义，有时可以省略I only knew(that)he was studying in a western country,butI didn't know what country he was in.What you need is more practice.That you will win the medal seems unlikely.名词性从句已有疑问引导词时，不再用thatI don't understand what you said just now.(understand 后不再用 that)2021高考英语语法高考英语语法【【名词性从句名词性从句】】易错点对点训练30题I.高考真题诊断·单句语法填空1.Every year, makes the most beautiful kite will win a prize in the Kite Festival.2.She asked me I had returned the books to the library, and I admitted that I hadn't.3.The manager put forward a suggestion we should have an assistant. There is too much work to do.4.As natural architects,the Pueblo Indians figured out exactly thick the adobe walls needed to be to make the cycle work on most days.5.If you swim in a river or lake,be sure to investigate is below the water surface.Often there are rocks or branches hidden in the water.【答案详解】1.whoever解析：句意：每年，无论谁做出最漂亮的风筝都将会在风筝节获奖。
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高中英语语法解析---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。
一．主语从句主语从句是在复合句中充当主语的从句，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。
引导主语从句的连词有：that, whether, who, whom, what, whatever, whose1.常规主语从句，既复合句在句中充当一个主语，那么这个句子就是主语从句(1)That he finished writing the composition in such a short time surprised us all.(2)Whether we will go for an outing tomorrow remains unknown.(3)Who will be our monitor hasn’t been decided yet.(4)Whom we must study for is a question of great importance.(5)What caused the accident remains is unknown.(6)What we need is time.(7)Whose watch was lost is unknown.(8)Whatever you did is right.注：连词位于句首不能省略2. It 作形式主语和it引导强调句的比较（为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末）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。
而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。
被强调部分指人时也可用who/whom。
例如：a) It is a pity that you didn’t go to see the film. 你不去看那场电影真可惜。
b) It doesn’t interest me whether you succeed or not.我对你成功与否不感兴趣。
c) It is in the morning that the murder took place.谋杀案是在早上发生的。
（强调句型）d) It is John that broke the window.是John打碎的窗户。
（强调句型）3. 用it 作形式主语的结构(1) It is ＋名词＋从句It is a fact that …事实是…It is an honor that …非常荣幸It is common knowledge that …是常识(2) It is ＋形容词＋从句It is natural that…很自然…It is strange that…奇怪的是…(3) It is ＋不及物动词＋从句It seems that…☆似乎…It happened that…☆碰巧…It appears that…☆似乎…(4) It ＋过去分词＋从句It is reported that…据报道…It has been proved that…已证实…It is said that…据说…3. 主语从句不可位于句首的五种情况：（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。
例如：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。
例如：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。
例如：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。
例如：正确表达：Is it likely that it will rain in the evening?错误表达：Is that will rain in the evening likely?4. what 与that 在引导主语从句时的区别what 引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。
例如：a) What you said yesterday is right.b) That she is still alive is a consolation二．宾语从句宾语从句就是在复合句中作宾语的名词性从句，通常放在主句谓语动词(及物动词) 或介词之后。
(1) 由that引导的宾语从句(that 通常可以省略), 例如：I heard that he joined the army. 我听说他参军了。
注：that在引导宾语从句时也并不是任何情况下都可以省略。
在以下情况下，that不能省略:①that从句位于句首时，that不可省略:That he ever said such a thing I simply don’t believe.我简直不相信他曾说过这样的话。
②that宾语从句的状语部分位于从句前部时。
I promised that if anyone could set me free,I would make him king over the earth.我曾许诺如果有人把我放了，我就让他成为全世界的国王。
③当主句的状语部分位于that宾语从句前时。
Abraham Lincoln later said himself that he only went to school a little now and a little then.亚伯拉罕•林肯自己后来说他只不过是时断时续地接受教育。
④that引导的宾语从句作介词宾语时，that不能省略:I know nothing about him except that he is from the south.对他我一无所知，只知道他是南方人。
⑤主句的谓语动词与宾语从句之间有插入语时。
When he got to England,he found,however,that his English was too limited.然而当他到英国时，他发现他的英语很有限。
⑥当一个谓语动词带两个或两个以上的that引导的宾语从句时。
(只有第一个可省略）Then he said （that）French was the most beautiful tongue in the world,and that we must keep it among us and never forget it.他说，法语是世界上最美的语言，我们必须坚持说法语，永远也不要忘记它。
⑦宾语从句是双宾语中的直接宾语时。
I must never tell anyone that I could not see the cloth.我决不能告诉任何人我看不到那布。
⑧宾语从句的主语是this/that，或用this/that修饰主语时。
He said that that was a good idea.他说那是个好主意。
⑨在直接引语中，主句和宾语从句被隔开时。
“I';m sorry to tell you,”he said,“that you didn';t watch carefully enough what I did.”我很遗憾的告诉大家，你们没有仔细观察我所做的一切。
⑩宾语从句的主语是非谓语动词或主语从句时。
The old lady then explained that what she was looking for was a pair of gloves for a girl.那位老太太解释说她在为一个女孩找一双手套。
(2)从属连词if/whether。
连词whether可引导主语从句、宾语从句和表语从句，不可省。
if 引导宾语从句。
㈠宾语从句是肯定句时，whether,if可互换；但whether常和or not连用，if一般不与or not 连用,宾语从句是否定句时，一般用if引导。
如:I don';t know if/whether I should tell you.不知我是否应告诉你。
I wonder whether it is true or not.不知这是不是真的。
I don';t care if it doesn';t rain.天下不下雨我不会在乎。
㈡用if引导宾语从句如果会引起歧义，应避免使用if而用wheter。
试比较：Please let me know if you want to go.Please let me know whether you want to go.if从句可理解为宾语从句，意为“请告诉我你是否想去”；此句又可理解为条件状语从句意为“如果你想去的话，请告诉我一声”。
㈢作介词宾语时，只能用whether,不能用if。
(介词常可省略）如：Everything depends （on）whether we have enough experience.一切都取决于我们是否有足够的经验。
(3)连接代词who, whom, whose, what, which, whoever, whatever, whichever连接副词where, when, how, why。
如:Who or what he was, Martin never learned.他是什么人？他是干什么的？马丁根本不知道。
I wonder what he’s writing to me about. 我不知道他要给我写信说什么事。