名词性从句 Word版含解析
(完整word)高中英语名词性从句讲解
名词性从句讲解在复合句中起名词作用的从句叫做名词性从句。
它包括主语从句、宾语从句、表语从句和同位语从句。
名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。
分析历届高考试题名词性从句考查的焦点主要有以下六个方面1. 考查名词性从句的语序问题2. 考查引导词that与what的区别3. 考查it在名词性从句中作形式主语或形式宾语的用法4. 考查whether与if的区别5. 考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别6. 考查名词性从句的虚拟语气问题语法要点剖析一、名词性从句主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。
因此，这四种从句通称为名词性从句。
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, why1. 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。
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。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
备战2021高考英语热点题型和提分秘籍 专题10 名词性从句(解析版) Word版含解析
专题十名词性从句【高频考点解读】考查名词性从句中引导词的选用，区分what，that，wh-ever，whether，if等连接代词和连接副词的语义功能和语法功能。
尤其是把名词性从句与定语从句放在一起进行综合考查，增加了试题的难度。
【热点题型】题型一考查主语从句及连接词的辨析例1、It is by no means clear the president can do to end the strike.A．how B．which C．that D．what【提分秘籍】that与what的区分1．引导名词性从句时，that没有意义，在从句中不作任何成分。
因此当从句意义完整，不缺任何成分时，往往用that，that引导主语从句、同位语从句、表语从句时不行省略。
2．what引导名词性从句时，意为“什么”(有时候可以不译出来)在从句中作主语、表语或宾语，从不行省略。
【举一反三】It suddenly occurred to him he had left his keys in the office.A．whether B．whereC．which D．that【热点题型】题型二考查宾语从句及连接词的辨析例2、We promise attends the party a chance to have a photo taken with the movie star.A．who B．whomC．whoever D．whomever 【提分秘籍】“疑问词”与“疑问词＋ever”的区分“疑问词＋ever”可以引导名词性从句，含有“无论……”之意，用法与“疑问词”一样，只是语气比疑问词本身的语气猛烈得多。
“疑问词＋ever”与“no matter＋疑问词”的区分①“疑问词＋ever”引导名词性从句时，whoever＝anyone who，whatever＝anything that等。
如：Whoever(＝Anyone who)comes is welcome.②“no matter＋疑问词”只能用来引导状语从句。
【英语】名词性从句知识点(大全)(word)
【英语】名词性从句知识点(大全)（word）一、名词性从句1．______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him.A. That; that; whichB. What; that; whatC. That; because; thatD. What; because; which 【答案】 B【解析】【分析】句意：珍妮最兴奋的是对他来说似乎是最困难的考试，她终于成功了。
______excited Jenny most是主语从句，从句中缺少主语，因此用关系代词what ；_____ she finally succeeded in ...是表语从句，从句中不缺少成分，因此用引导词that；______seemed to be the most difficult exam to him.是宾语从句，从句中缺少主语，因此用关系代词what ，故选B。
【点评】考查名词性从句，本题涉及主语从句，表语从句和宾语从句。
2．_____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful.A. That; whatB. What; whichC. It; whichD. As; that【答案】 B【解析】【分析】句意：众所周知，中国已经发射了神州7号宇宙飞船，这是中国首次成功的太空行走。
第一空处为主语从句，从句缺少主语，需用what引导；第二空所在句子是个定语从句，先行词为整个主句的内容，从句中缺少主语，需用which引导。
故选B。
【点评】考查名词性从句和定语从句，本题涉及主语从句和非限制性定语从句的应用。
(完整word)非常实用的名词性从句,不看会后悔
名词性从句专题【知识要点】一、在句中起名词作用的从句叫名词性从句,它包括主语从句、宾语从句、表语从句和同位语从句。
如：Whether he will come here or not is unimportant to me。
（主语从句)I don't know what he means。
(宾语从句）I'm glad that you are here.（宾语从句用在形容词之后）The teacher is satisfied with what you have done。
(介词宾语从句）That was because he was ill.(表语从句）The news that he got killed in the race surprised us all.（同位语从句)二、引导名词性从句的连接词连接词词义功能that无词义不作成分，只起连接作用whether/if是否不作成分，起连接作用what,which什么，哪个作主语、宾语、表语who，whom,whose谁，谁的作主语、宾语、定语when，where，how，why什么时候/地方，怎么样，为什么作状语how many/much多少作定语how 多久，多久一次,多作状语soon/often/long/much长，多么。
.。
词义及功能同疑问词whatever=anythingthat 无论什么作主语、宾语、表语、定语whosever=anyonewhose 无论谁的作主语、宾语、定语、表语whichever=anythingthat 无论哪个作宾语、定语、主语、表语whoever=anyone who无论谁作主语whomever=anyonewhom无论谁作宾语1。
that引导的从句如果作介词宾语只可用在except，in，but，besides等少数介词后。
I could say nothing but that I'm sorry.that引导的从句可作it的同位语从句。
【英语】名词性从句知识点总结(word)
【英语】名词性从句知识点总结（word）一、名词性从句1．________ his failure lies is expected ________ clear to us.A. What… to makeB. How… madeC. Where… to be madeD. Why… making【答案】C【解析】【分析】句意：他的失败之处有可能被我们弄清楚。
分析句子可知，主语从句中的lie为不及物动词，所以主句中缺少状语，因此填where。
expect sth.to do.固定短语，“期望某事发生”，sth. be expected to do.意为”某事有可能发生“。
make sth. clear to sb为固定搭配，意为“向某人阐明某事，使某人弄清某事”。
本句中make的宾语是where his failure lies 是被弄清楚，要用动词不定式的被动形式。
因此选C。
【点评】考查名词性从句及固定搭配，本题涉及主语从句和固定短语expect sth.to do.2．_____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful.A. That; whatB. What; whichC. It; whichD. As; that【答案】 B【解析】【分析】句意：众所周知，中国已经发射了神州7号宇宙飞船，这是中国首次成功的太空行走。
第一空处为主语从句，从句缺少主语，需用what引导；第二空所在句子是个定语从句，先行词为整个主句的内容，从句中缺少主语，需用which引导。
故选B。
【点评】考查名词性从句和定语从句，本题涉及主语从句和非限制性定语从句的应用。
3．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. which; that【答案】 C【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。
(完整word版)高中英语名词性从句讲解
适用文档名词性从句解说在复合句中起名作用的从句叫做名性从句。
它包含主从句、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，在年的高考取几乎都波及到，而且每年的命各有化。
解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重点解析一、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。
所以，四种从句通称名性从句。
引名性从句的接可分三：接： that, whether, if（不充任从句的任何成分）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。
主从句往常由附属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，在从句中充任从句的成分。
比如：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.我都知道他是如何成一名作家的。
Where the English evening will be held has not yet been announced.英晚会将在哪里行，没有宣告。
有防止句子重脚，常用形式主it取代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。
【英语】名词性从句考点+例题_全面解析(word)1
【英语】名词性从句考点+例题_全面解析（word）1一、名词性从句1．______ will be in charge of the meeting has not been decided yet.A. WhatB. WhichC. ThatD. Who【答案】 D【解析】【分析】句意：谁将负责这次会议还没有决定。
______ will be in charge of the meeting是一个主语从句，从句中缺少主语，指人，故选D。
【点评】考查名词性从句，本题涉及who引导的主语从句。
2． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. What【答案】 D【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。
that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. It; whom【答案】 D【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。
冲刺2019年高考英语黄金考点解析 解密09 名词性从句 Word版含解析
【命题解读】1.了解名词性从句的基本用法，掌握名词性从句的引导词及引导词在名词性从句中的作用，辨析that与what,if与whether等引导词的用法。
2.明确it作形式主语和形式宾语、代替主语从句及宾语从句的用法，及其与强调句的区别。
3.区分that引导的同位语从句及定语从句。
【命题预测】预计2018年高考对名词性从句的考查仍然不会单纯地考查其语法结构，而是将其融入一定的语境中来考查考生的实际综合运用能力。
【复习建议】1. 掌握宾语从句的用法；2. 了解同位语从句的用法；3. 掌握表语从句的用法；4. 掌握主语从句的用法；5. 如何正确选择引导词。
主语从句是在复合句中担任主语的句子。
其特点有：（1）引导词：从属连词that, whether；连接代词who, what, which；whoever, whatever, whichever;连接副词when, where, how和why。
（2）语序：陈述句语序（3）在主语从句中只能用whether,不能用ifThat he will win the match is certain.It is certain that he will win the match.1. 一般来说主语从句都是放在句首，但有时为了使句子保持平衡，避免"头重脚轻",常用it 作形式主语，从而把主语从句放后面。
常以it作形式主语的句型有：①It is＋形容词＋that...☞It is certain that she will do well in her exam．毫无疑问她考试成绩会很好。
②It is＋名词词组(no wonder，an honour，a good thing，a pity，no surprise，common knowledge，a surprise，a fact，etc．)＋that...☞It’s a pity that we can’t go．很遗憾我们不能去。
最新 名词性从句考点解析(Word版附答案)(word)
最新名词性从句考点解析（Word版附答案）（word）一、名词性从句1．_______ caused the accident has not been found out yet.A. WhatB. WhichC. The thingD. That【答案】 A【解析】【分析】句意：造成事故的原因还没有查明。
此处为主语从句，从句中缺少主语，应该用what引导，故答案为A。
【点评】考查主语从句。
以及what的含义。
2． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. What【答案】 D【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。
that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3． is even more important is the earth cooled down, water began to appear on its surface.A. When; that; whenB. What; whether; asC. What; that; asD. lt; whether; as 【答案】 C【解析】【分析】这题考查从句的用法，第一空填what引导主语从句，在主语从句中what做主语，第二空填that引导表语从句，在表语从句中，as是引导时间状语从句，句意是：甚至更重要的是：随着地球的冷却，水开始出现在表面。
复习名词性从句Microsoft Word 文档
复习名词性从句首先，我们要弄清楚名词性从句的概念：具有名词的性质的从句。
那么名词在句子中具有哪些句法功能呢?一般说来,名词可作主语，宾语，表语和同位语。
因此名词性从句就包括主语从句，宾语从句，表语从句和同位语从句。
为了便于理解和掌握，我们放在一起来讲解。
高考考点：1.名词性从句中连接词的运用：名词性从句中的连接词有：连接连词that / whether / as if,连接代词what / who/ which / whose / whatever / whoever / whomever / whichever,连接副词where / when / why / how / wherever / whenever。
（1）that的用法：①主语从句,表语从句,同位语从句中用that但不能省略：That they are good at English is known to us all.The problem is that we don’t have enough money.She expressed the hope that they would come to China one day.②宾语从句中的连接词that有时可省有时又不可省,在以下几种情况中that不能省略：I.当that从句和主句谓语动词间有插入词语或者从句主语间有插入语时,that不可省略;II.当that 从句与另一名词性从句并列作宾语时,that不能省;III.当that作介词宾语时,that不可省掉：He judged that because he was a child, he did not understand wineEveryone knew what happened and that she was worried.The reason lies in that she works harder than the others do.③that从句作主语和宾语时,可以用it 来替换成以下几种结构表达。
必备英语 名词性从句考点解析(Word版附答案)含答案解析
必备英语名词性从句考点解析（Word版附答案）含答案解析一、初中英语名词性从句1．______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game.A. That, whatB. What, thatC. That, thatD. What, what【答案】 B【解析】【分析】句意：使NBA世界惊讶的是Kobe Bryant在一场比赛中得了81分。
根据句意可知，句子主语是一个主语从句，引导词即起引导作用又要做从句的一个成分，所以第一空填What；第二空是that引导的表语从句，只起引导作用，故选B。
【点评】考查名词性从句，本题涉及关系代词what引导的主语从句和表语从句的应用。
2．It was he said disappointed me.A. that; whatB. what; thatC. that; whichD. which; that【答案】 B【解析】【分析】句意：正是他说的话让我很失望。
这是一个强调句型,"it is/was that..."是固定搭配,"what he said"是被强调部分, 你可以发现去掉"it was that"后, 句子仍然完整。
"what he said"做主语,主语从句中"said"缺宾语用what补足，故选B。
【点评】考查主语从句的强调形式。
3．—What impresses you most when you visit the Acropolis ?— ________ it is that has brought the grand palace into today's terrible scene.A. WhereB. WhatC. HowD. When【答案】 B【解析】【分析】句意：——当你参观雅典卫城时，你印象最深的是什么？——使我印象最深的是什么将从前宏伟的宫殿变成了今天惨不忍睹的样子。
名词性从句考点解析(Word版附答案)1
名词性从句考点解析（Word版附答案）1一、名词性从句1．It was never clear ________ the man hadn't reported the accident sooner.A. thatB. howC. whenD. why【答案】 D【解析】【分析】句意：这名男子没有早点报告这次事故的原因根本没有搞清楚。
It在句中是形式主语，真正的主语是why引导的主语从句。
故选D。
【点评】考查名词性从句，本题涉及why引导的主语从句。
2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。
本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。
故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3． is even more important is the earth cooled down, water began to appear on its surface.A. When; that; whenB. What; whether; asC. What; that; asD. lt; whether; as 【答案】 C【解析】【分析】这题考查从句的用法，第一空填what引导主语从句，在主语从句中what做主语，第二空填that引导表语从句，在表语从句中，as是引导时间状语从句，句意是：甚至更重要的是：随着地球的冷却，水开始出现在表面。
(完整版)高中英语名词性从句讲解(可编辑修改word版)
名词性从句讲解在复合句中起名词作用的从句叫做名词性从句。
它包括主语从句、宾语从句、表语从句和同位语从句。
名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。
分析历届高考试题名词性从句考查的焦点主要有以下六个方面1. 考查名词性从句的语序问题2. 考查引导词that 与what 的区别3. 考查it 在名词性从句中作形式主语或形式宾语的用法4. 考查whether 与if 的区别5.考查名词性从句中的疑问词+ever 引导的名词性从句与 no matter+疑问词引导的状语从句的区别6.考查名词性从句的虚拟语气问题语法要点剖析一、名词性从句主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。
因此，这四种从句通称为名词性从句。
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, why1.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。
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。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
【英语】 中考英语名词性从句20篇(附带答案解析)(word)
【英语】中考英语名词性从句20篇(附带答案解析)（word）一、名词性从句1．It was never clear ________ the man hadn't reported the accident sooner.A. thatB. howC. whenD. why【答案】 D【解析】【分析】句意：这名男子没有早点报告这次事故的原因根本没有搞清楚。
It在句中是形式主语，真正的主语是why引导的主语从句。
故选D。
【点评】考查名词性从句，本题涉及why引导的主语从句。
2． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. What【答案】 D【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。
that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3．_______ are playing an important part is well known to us all.A. That whoB. Those whoC. Who thatD. Who【答案】 D【解析】【分析】考查主语从句。
句意：谁起着重要作用，这是众所周知的。
主语从句缺少引导词，从句缺少主语，故选D。
复习专题 名词性从句考点解析(Word版附答案)
复习专题名词性从句考点解析（Word版附答案）一、初中英语名词性从句1．______ makes the school proud is ______ more than 90% of the students have been admitted to universities.A. what; becauseB. that; becauseC. that; whatD. what; that【答案】 D【解析】【分析】句意：让学校骄傲的是，超过90%的学生被重点大学所录取。
第一空主语从句中缺少主语，指代事情，故用what;第二空为表语从句，且从句中不缺少成分，故填关系词that。
故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句和that引导的表语从句。
2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。
本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。
故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. It; whom【答案】 D【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。
(完整word版)高中英语语法总结-名词性从句
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。
根据从句在句子中的功能分根据从句的性质分 定语从句形容词性从句 主语从句名词性从句 宾语从句表语从句同位语从句状语从句副词性从句第一节 知识点讲解一．【主语从句】顾名思义，主语从句在句子中作主语。
有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾部，前面用形式主语it 代替。
从句作主语时，谓语动词一般为单数形式。
如:What I saw was beyond any verbal description.That his hair was turning grey worried him a bit.Why the company denied the contract is still unknown.When and where the government will build a city square is under discussion.It is pretty annoying that a small part of the machine is missing.It remains to be seen whether the new novel will be well received.Tips: 主语从句的that 绝对不能省去。
因为句子是不能做主语的，故用that 引导。
若去掉则没有了主语，而宾语从句的that 可省。
主语从句：That he is right is known to all of us.宾语从句：We all know (that) he is right.1. 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。
2021年高考英语真题分类汇编：专题10 名词性从句 Word版含解析
专题十名词性从句1.【2021·湖南】26.You have to know ________ you're going if you are to plan the best way of getting there.A. whatB. thatC. whereD. who【答案】C【考点定位】考查宾语从句。
【名师点睛】推断是什么句子最关键，这个句子是由know引导的宾语从句，宾语从句的连接词有连接代词和连接副词。
由于从句部分缺少状语成分，答案就出来了。
正确解答该题需要理解句意以及留意上下文（you're going if you are to plan the best way of getting there.）的表达。
2.【2021·北京】33.I truly believe ______beauty comes from within.A. thatB. whereC. whatD. why【答案】A【解析】试题分析：句意：我很信任秀丽源自于内心! 本题考查宾语从句。
从句部分不缺少任何成分，因此用that起到连接作用，也可以省略。
从句部分不缺少任何成分，因此用that起到连接作用，也可以省略。
故选A。
【考点定位】考查名词性从句。
【名师点睛】名词性从句分多种，宾语从句在考试中也是很常见的，要留意宾语是句子的一个重要成分，它可以由名词、代词、名词短语或句子充当。
当一个句子充当宾语时，这个句子就称之为宾语从句。
一般状况下，宾语从句可作谓语的宾语，也可做主语的宾语。
依据所选空在句中所作的成分来推断出是何种名词性从句。
3.【2021·安徽】25.A ship in harbor is safe, but that’s not ______ ships are built for.A. whatB. whomC. whyD. when【答案】A【解析】试题分析：句意：船停放在海港里是很平安的，但这并非建筑船的目的。
名词性从句专项复习(word)1
名词性从句专项复习（word）1一、名词性从句1． is known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. Which【答案】 B【解析】【分析】句意：众所周知地球比太阳小。
is known to all 是主语从句，从句中缺少主语，因此用what，选B。
【点评】考查名词性从句，本题涉及what引导的主语从句。
2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。
本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。
故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
3．___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. That; why【答案】 C【解析】【分析】句意：最让我吃惊的是那个女孩通过了驾驶考试。
___ surprised me most是一个主语从句，从句中缺少主语，故填what；____the girl passed the driver test 是一个表语从句，句中不缺少成分，故填that。
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专题九名词性从句1．that引导的名词性从句(1)that在名词性从句中不作任何成分，引导宾语从句时有时可以省略，引导主语从句、表语从句和同位语从句时不能省略。
I think that you should turn to the teacher for help.(that不充当任何句子成分，也无实际意义)我认为你应该向老师寻求帮助。
(2)that引导主语从句时，常用it作形式主语，常见句型有：①It＋be＋形容词(necessary/right/likely/unlikely/wrong/important/certain等)＋that从句It is wonderful that all of you have passed the difficult exam!你们都通过了这次很难的考试真令人高兴！②It＋be＋名词(短语)(a pity/a shame/a surprise/no wonder等)＋that从句It is a pity that you have missed the wonderful lecture.你错过了这么精彩的演讲真遗憾。
③It＋be＋过去分词(said/told/reported/decided等)＋that从句It is suggested that the lab building (should) be built next year.有人建议实验楼明年修建。
④It＋特殊动词(seems/appears/happens/matters)＋that从句It appears that they have made the same mistake.好像他们犯了同样的错误。
[名师指津]在以下主语从句中，常使用虚拟语气，即“should＋动词原形”形式，其中的should可以省略。
①It is necessary/strange/important/natural etc.＋that ...②It is a pity that ...③It is suggested/requested/required/proposed/desired etc. ＋that ...(3)动词find, feel, think, consider, make, believe等后面有宾语补足语时，需用it作形式宾语而将that引导的宾语从句后置。
I think it necessary that we take plenty of boiled water every day.我认为我们每天喝大量的开水是很有必要的。
2．whether与if 引导的名词性从句(1)whether引导的主语从句既可放在句首也可放在句末，但if引导的主语从句只能放在句末，且前面需用it作形式主语。
Whether it is true remains a question.这是否是真的依然是个问题。
It is unknown if he will attend the meeting.他是否会来参加会议还不清楚。
(2)whether与if引导宾语从句时，大多数情况下可以互换，后面直接跟or not时用whether，用于介词后引导宾语从句时也用whether。
We don't know whether or not she was ready.我们不知道她是否准备好了。
I'm interested in whether you've finished the work.我对你是否完成了这项工作感兴趣。
(3)whether可引导表语从句和同位语从句，而if则不可以。
The question is whether it is worth doing.问题是它是否值得做。
The question whether the work was worth doing has not been decided.这项工作是否值得做的问题还没有确定。
1．连接代词who, whom, whose, what, which等不但起连接作用，也在从句中作名词或代词所作的成分，如主语、表语、宾语、定语等。
缺少连接代词，从句不完整。
What worries us most is who let out the secret.最令我们担忧的是谁泄漏了秘密。
2．连接副词引导的名词性从句连接副词when, where, why, how等不但起连接作用，也在从句中作状语，表示时间、地点、原因和方式等。
He didn't tell me when we would meet again.他没告诉我什么时候我们再见面。
Go and get your coat. It's where you left it.去把你的大衣拿来。
就在你原来放的地方。
I have no idea how I can express myself clearly in English.我不知道如何用英语清楚地表达自己。
That's why I want you to work there.那就是我要你在那儿工作的原因。
3．“疑问词＋-ever”引导的名词性从句“疑问词＋-ever”引导名词性从句时，有词意，并且在从句中充当一定的句子成分。
Whoever breaks the law should be punished.无论谁触犯法律都应该受到惩罚。
Wherever children go makes their parents worry.孩子们无论去哪儿父母都担心。
[名师指津]“疑问词＋-ever”还可以引导让步状语从句，但“no matter＋疑问词”只能引导让步状语从句，不能用来引导名词性从句。
Whatever (＝No matter what) you do, you must do it well.无论你做什么，都必须做好。
[命题点感悟]单句语法填空①(2018·浙江11月高考)It is possible ________ caffeine may cause birth defects (缺陷) in humans, too.解析：that it作形式主语，that从句为真正主语。
②(2017·天津高考改编)She asked me________ I had returned the books to the library, and I admitted that I hadn't.解析：whether/if句意：她问我是否已经把书还给图书馆了，我承认说我还没有还。
分析句子结构可知，空格处引导宾语从句，且在从句中不作任何成分，只起连接作用；又根据句意可知此处表示“是否”，故用whether或if引导宾语从句。
③(2016·全国卷Ⅰ)My uncle is the owner of a restaurant close to ________ I live.解析：where分析句子结构可知，介词to之后为宾语从句，宾语从句中缺少地点状语，故用where引导。
④(2015·全国卷Ⅱ)As natural architects, the Pueblo Indians figured out exactly ________ thick the adobe walls needed to be to make the cycle work on most days.解析：how分析句子结构可知，空格处是一个宾语从句。
空格后的thick为形容词，因此空格处应用副词，故填how。
⑤(2014·广东高考)I didn't understand ________ this would happen and my credit card had already been charged for the reservation.解析：why根据语境可知，“我”不知道/不明白为什么会发生这样的事情。
不明白的一定是原因，故用why引导。
1．that和what的区别that引导名词性从句时，在主从句中不充当任何句子成分，也没有任何含义；而what 引导名词性从句时，在主从句中都要充当一定的句子成分，what可以分解成定语从句中的“先行词＋关系代词”，即常说的“先行词＋that/which/who”。
It's a shame that he has made such a mistake.真遗憾，他犯了这样一个错误。
I will do what I can (do) to help him.我将尽我所能帮助他。
2．同位语从句与定语从句的区别判断是定语从句还是同位语从句可以用“加词”的方法，即在名词和从句之间加入一个be动词，如果句子意思成立，则是同位语从句，否则，则是定语从句。
试比较：①The notice that the meeting had to be put off was true.(同位语从句)→The notice was that the meeting had to be put off.②The notice that he read just now was true.(定语从句)[专题过关训练]Ⅰ.单句语法填空1．And it evaluates how well you combine your listening, reading, speaking and writing skills to perform academic tasks.2．Now, he is still waiting to find out whether/if he has broken the record.3．He promised to give a great reward to whoever_ found the watch.4．“That's exactly what_ I need，”Mr. Vincent said to himself.5．Think about what you want in the coming year, then ask yourself why you want that.6．Another possible reason is that on average, the British people don't take themselves too seriously.7．What he did know was that he was very thankful for the opportunity given to him.8．The two presidents talked by telephone on Friday, but the details of what they said were not available.9．Reading exposes you to new words, and you will see how those words are used.10．The third reason is that some students have to get up early on weekdays to get to school far away from home.11．Some students prefer to choose a major first so they can learn what they are interested in.12．If we are in the habit of raising doubts as to whether what we are told is true, we can find the correct answer and learn more.13．I'd like to know how the activity is scheduled in detail.14．With such a pen pal, I hope I can share with her my experiences in traveling, taking care of pets, or whatever we have in common.15．(2019·云南昆明一中模拟)What made Mr. Green surprised was that it was just his daughter, who wore a suit of man's clothes.Ⅱ.运用语法写靓句1．许多学生的成功是因为他们为考试做了充分的准备。