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名词性从句的重点、难点、考点：名词性从句在功能上相当于名词名词性从句的定义:在复合句中起名词作用的从句叫名词性从句(Noun Clauses）。
名词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）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；as if（好象）虽有词义，但在从句中不担任成分。
注意：连词的选用：依据“缺什么补什么”原则确定正确的连词。
如果句子中缺主语，指人用who，指物用what；如缺宾语，指人用whom，指物用what；如缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用what或which；什么都不缺用that。
whether 和if（是否），1. It’s not immediately clear ____ the financial crisis will soon be over .A. sinceB. whatC. whenD. whether2. As a new diplomat , he often thinks of _____ he can react more appropriately on such occasions.A. whatB. whichC. thatD. how3. When asked ____ they need most , the kids said they wanted to feel important and loved. \A. whatB. whyC. whomD. which4. The last time we had great fun was ___ we were visiting the Water Park .A. whereB. howC. whenD. why5. Why not try your luck downtown, Bob? That’s _____the best jobs are .A. whereB. whatC. whenD. why6._______ you don't like him is none of my business. (上海1992)A. WhatB. WhoC. ThatD. Whether7.Go and get your coat．It's ____ you left it．A. whereB. thereC. here whereD. where there（二）that在名词性从句中的用法that 引导名词性从句不充当任何成分，没有具体意义。
语法重难点解析一、名词性从句名词性从句是指在主句中作名词用的句子，起到名词的作用。
常见的名词性从句有主语从句、宾语从句、表语从句和同位语从句。
1. 主语从句：主语从句在句中担任主语的角色，常用引导词有that, whether, who, whom, which, what, whoever, whatever等。
例如：- That he can pass the exam is not certain.（他能否通过考试还不确定。
）- Whether he will come to the party remains unclear.（他是否会来参加派对仍不清楚。
）2. 宾语从句：宾语从句在句中担任宾语的角色，常用引导词有that, whether, if, who, whom, which, what, whoever, whatever等。
例如：- She asked me whether I had finished my homework.（她问我是否完成了作业。
）- I don't know who will be the next president.（我不知道谁会当下任总统。
）3. 表语从句：表语从句在句中担任表语的角色，常用引导词有that, whether, who, whom, which, what, whoever, whatever等。
例如：- My wish is that everyone can live in peace.（我的愿望是每个人都能和平生活。
）- The question is whether we should continue the project.（问题是我们是否应该继续这个项目。
）4. 同位语从句：同位语从句在句中作名词的同位语，常用引导词有that, whether, who, whom, which, what, whoever, whatever等。
高考英语名词性从句知识点一、that从句1、主语从句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, probable, 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。
名词性从句的重难点第一篇：名词性从句的重难点名词性从句的重难点在句子中起名词作用的句子叫名词从句(Noun Clauses）。
名词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、引导名词性从句的连接词引导名词性从句的连接词可分为三类：连接词：that, whether, if 不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.连接副词：when, where, how, why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.大部分连接词引导的主语从句都可以置于句末，用 it充当形式主语。
It is not important who will go.It is still unknown which team will win the match.二.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。
例如：What he wants to tell us is not clear.他要跟我们说什么，还不清楚。
Who will win the match is still unknown.谁能赢得这场比赛还不得而知。
It is known to us how he became a writer.我们都知道他是如何成为一名作家的。
学习名词性从句的应注意的关键点1. 备考主语从句应留意以下三点一是从句作主语，主句谓语动词用第三人称单数；二是主语从句通常用it 作形式主语，尤其是在it is +名词/ 形容词/ 过去分词+that…中，或在it seems / happens that…中，或疑问句中；三要留意由what, whatever, whoever引导的主语从句一般不用形式主语。
2. 备考宾语从句应留意以下四点一是介词后(except 等除外)一般不跟that引导的宾语从句，但可接疑问词引导的宾语从句；二是在that引导的宾语从句后假设还有补语时，要用it作形式宾语，而将that从句置于补语之后；三是当主句谓语动词是think, believe, suppose, expect, imagine等时，假设宾语从句要表示否认意义，往往要通过否主句来实现，即所谓否认转移；四是虽然引导宾语从句的that有时可以省略，但假设宾语从句前有插入语或有间接宾语时，that不能省略；that在与之并列的另一个宾语从句之后或者在“形式宾语it+宾补”之后时也不能省略；that从句单独回答下列问题时，that也不能省略。
3. 备考表语从句应留意以下三点一是除that, whether和疑问词外，as, as if, as though, because也可引导表语从句；二要留意“that’s why+结果”以及“that’s because+缘由”的区分；三是留意the reason (why / for…) is that…句式。
3. 备考同位语从句应留意以下三点一是同位语从句多在news, order, word (=news / order), idea, hope, suggestion, information, plan, thought, doubt, fear, belief等抽象名词后，说明其详细内容；二是同位语从句与所说明的名词有时会被谓语所分开，做题时需留意；三是引导同位语从句的有that, whether和连接副词when, where, why, how等，但绝大多数由that 引导，留意同位语从句不能用which引导四组名词性从句引导词用法区分1. what 与that的用法区分两者均可引导主语、表语、宾语从句，区分是what可在从句中用作主语、宾语或表语，意为“什么”或“所…的”，而that仅起连接作用，本身没有实际意义，在从句中也不充当任何句子成分(引导宾语从句时通常可以省略)：he doesn’t know what she likes. 他不知道她喜爱什么。
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。
名词性从句的重点、难点、考点：名词性从句在功能上相当于名词名词性从句的定义:在复合句中起名词作用的从句叫名词性从句(Noun Clauses）。
名词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）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；as if（好象）虽有词义，但在从句中不担任成分。
注意：连词的选用：依据“缺什么补什么”原则确定正确的连词。
如果句子中缺主语，指人用who，指物用what；如缺宾语，指人用whom，指物用what；如缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用what或which；什么都不缺用that。
whether 和if（是否），1. It’s not immediately clear ____ the financial crisis will soon be over .A. sinceB. whatC. whenD. whether2. As a new diplomat , he often thinks of _____ he can react more appropriately on such occasions.A. whatB. whichC. thatD. how3. When asked ____ they need most , the kids said they wanted to feel important and loved. \A. whatB. whyC. whomD. which4. The last time we had great fun was ___ we were visiting the Water Park .A. whereB. howC. whenD. why5. Why not try your luck downtown, Bob? That’s _____the best jobs are .A. whereB. whatC. whenD. why6._______ you don't like him is none of my business. (上海1992)A. WhatB. WhoC. ThatD. Whether7.Go and get your coat．It's ____ you left it．A. whereB. thereC. here whereD. where there（二）that在名词性从句中的用法that 引导名词性从句不充当任何成分，没有具体意义。
以下情况that不能省略：1.主、表、同从句不能省That I can pay back the help people give me makes me happy.It is certain that he will succeed.The order that all the soldiers should stay still is given by the general.The fact is that he has not been seen recently.2.宾语从句中的that 一般可以省，但以下情况不能：a. 并列宾语从句中第一个that 可以省，后面的都不能省。
I knows (that) he is a worker and that he lives in Shanghai.b.介词in , except 后面的that 不能省。
The reason lies in ______she works harder than others do.The higher income tax is harmful in ______it may discourage people from trying to earn more.c.主句动词后有其它从句插入，或连接词后有其它从句插入，that 不能省。
He judged ______ because he was a child , he didn't understand what he said .Everyone knows ____ happened and_____ she was worried .A that, that B. what, that C. what, / D. that , whatd. it 做形式，that做真正的宾语引导从句，that不能省。
I think it difficult ____we finish the task in only one day. A / B. that C. what D. whiche.若主句的谓语动词是appear，agree，learn，suggest，observe等时，that通常不可省略。
例如：We agreedthat all the students must plant trees in the park.1. China’s success in manned-spacecraft travel shows ____ our country has become one of the greatestpowers in space research. A. what B. which C. 不填 D. it that（三）、whether与if的辨用whether与if都可以引导宾语从句，常可互换。
但在下列情况下用whether。
a. 主语从句b. 表语从句c. 同位语从句 e. 介词后的宾语从句f.后接动词不定式(whether to do sth.)g .whether or not 连在一起引导宾语从句时不用if___ the meeting will be held in Beijing is not known yet.A. WheneverB. IfC. WhetherD. That2.At first he hated the new job but decided to give himself a few months to see ____ it got any better.A. whenB. howC. whyD. if3._____we’ll go camping tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where4. What the doctors really doubt is _____my mother will recover from the serious disease soon. (上海2001)A. whenB. howC. whetherD. why（四）名词性从句中一律使用陈序语气。
e.g. He asked how much I paid for the violin.I want to know what he has told you. 我想知道他告诉了你什么。
She always thinks of how she can work well. 她总是在想怎样能把工作做好。
1.No one can be sure ____ in a million years.A. what man will look likeB. what will man look likeC. man will look like whatD. what look will man like2.You can’t imagine ____ when they received these nice Christmas presents.A. how they were excitedB. how excited they wereC. how excited were theyD. they were how excited3. The photographs will show you ____．（MET1989）A. what does our village look likeB. what our village looks likeC. how does our village look likeD. how our village looks like4. Someone is ringing the doorbell. Go and see ___________. (NMET2000)A. who is heB. who he isC. who is itD. who it is5. Can you make sure ______ the gold ring? (NMET1990)A. where Alice had putB. where did Alice putC. where Alice has putD. where has Alice put6. He asked ________ for the violin. (NMET1991)A. did I pay how muchB. I paid how muchC. how much did I payD. how much I paid（五）名词性从句中虚拟语气的使用情况1、在表示“命令、建议、坚持、要求”的名词性从句中，要用“should+动词原形”形式，should可以省略。
e.g. I made a suggestion that he (should) go there at once.I suggested that he (should) go there at once.The suggestion was that he (should) go there at once.I insist that she (should) do her work alone. 我坚持要她自己工作。
The commander ordered that troops (should) set off at once. 司令员命令部队马上出发\ He insisted that he _____ the money and ____ he ____ set free.A. didn’t steal , / wasB. steal , that , shoud beC. didn’t steal , that , should beD. steal , / was2、wish引导的宾语从句中要用虚拟语气，分与现在、过去、将来相反三种情况。
