（考情分析）
名词性从句是历年高考的重点和难点也是热点。名词性从句相当于名词，可用作主句的主语、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。引导名词性从句的连接词有: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;连接副词:when, where, why, how，有词义，在从句中担任成分，作状语;连接词:that, whether, if, as if，if ***whether***, as if虽有词义，但在从句中不担任成分;that 无词义，在从句中不担任成分，有时可省略。
今后对名词性从句的考查仍将集中在关联词的选用上，特别石堆what引导的名词性从句的考查。名词性从句与其他从句的混合考查将在今后高考中占据一席之地。易混句型的辨析，比如it作形式主语，主语从句后置的句型与强调句型的辨析将仍作为高考考查的重点。
（知识点归纳）
名词性从句的用法
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:连词:that***无任何词意***;whether, if***均表示“是否”表明从句内容的不确定性***;as if ,as though***均表示“好像”，“似乎”***。
以上在从句中均不充当任何成分
连接代词:what, whatever, who, whoever, whom, whose, which. Whichever, whomever
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.
比较:
Whether与if 均为"是否"的意思。 但在下列情况下，whether 不能被if 取代:
1. Whether引导主语从句并在句首;
2. 引导表语从句
3. Whether从句作介词宾语;
4. 从句后有"or not"
Whether he will come is not clear.
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、具体分类
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。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。
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。
（典例1）***2009·上海卷***It is immediately clear ____ the financial crisis will soon be over.
A. since B. what C. when D. whether
（答案）D
（解析）考查主语从句的用法。该句的意思时:经济危机是否会很快结束是很明显的事情。“是否”用whether表示，不能选when是因为从句中由soon这一实践状语。
（典例2）***2008·山东卷***_____ was most important to her, she told me, was her family.
A. It B. This C. What D. As
（答案）C
（解析）she told me是插入语，可删除。what引导主语从句，在从句中充当主语。
有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下:
***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
另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“***should*** +do”，常用的句型有:
It is necessary ***important, natural, strange, etc.*** that …
It is a pity ***a shame, no wonder, etc.*** that…
It is suggested ***requested, proposed, desired, etc.*** that…
（典例）***2009·天津卷***It is obvious to the students ______ they should get well prepared for their future.
A. as B. which C. whether D. that
（答案）D
（解析）考查名词性从句。本空格处应是一个主语从句的引导词，因该主语从句不缺成分，且句意完整，故应用不作任何成分的连词that。
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
由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如:
He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。
We must never think ***that*** we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。
注意:在demand，order，suggest，decide，insist，desire，request，command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”。例如:
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。
***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。例如:
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。
She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。
（典例1）***2008·北京卷***The companies are working together to create _______ they hope will be the best means of transport in the 21st century.
A. which B. that C. what D. who
（答案）C
（解析）create后为宾语从句，从句中they hope是插入语，可删除。因为从句中缺少主语，所以用what引导该从句。
（典例2）***2009· 全国卷Ⅰ*** Could I speak to is in charge of International Sales please?
A. who B. what C. whoever D. whatever
（答案）C
（解析） 考查名词性从句。题干中介词to后面为宾语从句，从句中缺少主语，因此填whoever。
***3***用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether，不用if:
a. 引导主语从句并在句首时;b. 引导表语从句时;c . 引导从句作介词宾语时;d. 从句后有“or not”时;e. 后接动词不定式时。例如:
Whether there is life on the moon is an interesting question. 月球上有没有生命是个有趣的问题。
The question is whether she should have a low opinion of the test?
Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。
I wonder whether he will come or not. 我想知道他来还是不来。
Can you tell me whether to go or to stay? 你能否告诉我是去还是留?
***4***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。例如:
he studies English every day. ***从句用一般现在时***
he studied English last term. ***从句用一般过去时***
I know ***that*** he will study English next year. ***从句用一般将来时***
he has studied English since 1998. ***从句用现在完成时***
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。例如:
The teacher told us that Tom had left us for America.
***5***think, believe, imagine, suppose等等动词引起的否定性宾语从句中，要把上述主句中的`动词变为否定式。即将从句中的否定形式移到主句中。例如:
We don’t think you are here. 我们认为你不在这。
I don’t believe he will do so. 我相信他不会这样做。
3.表语从句
在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用as if引导。其基本结构为:主语 + 系动词 + that从句。例如:
The fact is that we have lost the game. 事实是我们已经输了这场比赛。
That’s just what I want. 这正是我想要的。
This is where our problem lies. 这就是我们的问题所在。
That is why he didn’t come to the meeting. 那就是他为什么不到会的原因。
It looks as if it is going to rain. 看上去天要下雨了。
需要注意的，当主语是reason时，表语从句要用that引导而不是because。例如:
The reason why he was late was that he missed the train by one minute this morning .
（提拨）whether 可引导表语从句，但与之同义的if却通常不用于引导表语从句。
（典例1） ***2009·山东卷***The little girl who got lost decided to remain ________she was and wait tor her mother.
A. where B. what C. how D. who
（答案）A
（解析）remain是系动词，后加表语从句，由句意可知，从句缺地点状语，所以选A。
（典例2）***2008·天津卷***The last time we had grat fun was _______ we were visiting the Water Park.
A. where B. how C. when D. why
（答案）C
（解析）was后为表语从句，此处when与the last time相呼应，根据句意可排除其他选项。
4. 同位语从句
同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导，可用于同位语从句的名词有advice，demand，doubt，fact，hope，idea，information，message，news，order，problem，promise，question，request，suggestion，truth，wish，word等。例如:
The news that we won the game is exciting. 我们赢得这场比赛的消息令人激动。
I have no idea when he will come back home. 我不知道他什么时候回来。
The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。
（典例）***2009· 重庆卷*** We should consider the students’ request ________ the school library provide more books on popular science.
A. that B. when C. which D. where
（答案）A
（解析）考查名词性从句。根据题意知，空格处是同位语从句的引导词，修饰中心名词request，且在句子中不充当成分，故用that。这句话的意思是我们应该考虑学生的这个要求，即学校图书馆应该多提供一些大众科学方面的书籍。
三、对比与用法
1.同位语从句和定语从句的区别:
that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略; that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。
试比较下面两个例句:
I had no idea that you were here.***that引导同位语从句，不能省略***
Have you got the idea***that***this book gives you of life in ancient Greece?***that引导定语从句，作宾语，可以省略***
2.that-从句作主语通常用it作先行词，而将that-从句置于句末。
用it作形式主语的that-从句有以下四种不同的搭配关系:
a. It + be +形容词+ that-从句
It is necessary that… 有必要……
It is important that… 重要的是……
It is obvious that… 很明显……
b. It + be + -ed 分词+ that-从句
It is believed that… 人们相信……
It is known to all that… 从所周知……
It has been decided that… 已决定……
c. It + be +名词+ that-从句
It is common knowledge that… ……是常识
It is a surprise that… 令人惊奇的是……
It is a fact that… 事实是……
d. It +不及物动词+ that-分句
It appears that… 似乎……
It happens that… 碰巧……
It occurred to me that… 我突然想起……
It is quite clear that the whole project is doomed to failure.
很清楚，整个计划注定要失败。
It's a pity that you should have to leave.
你非走不可真是件憾事。
3.否定转移
***1*** 将think, believe, suppose, expect, fancy, imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式。
I don't think I know you. 我想我并不认识你。
I don' t believe he will come. 我相信他不回来。
注意:若谓语动词为hope,宾语从句中的否定词不能转移。
I hope you weren't ill. 我想你没有生病吧。
***2***将seem, appear 等后的从句的否定转移到前面。
It doesn't seem that they know where to go.
看来他们不知道往哪去。
It doesn't appear that we'll have a sunny day tomorrow.
看来我们明天不会碰上好天气。
（备考策略）
考生对于名词性从句的复习和应试关键要把握每个引导词的意义，因为在对于名词性从句的考查中，引导词在句子中都起作用，有意义，因此在分析句子结构，对比辨别名词性从句、状语从句、强调句式后，最后还是要选择引导词;另外还要注意以下几点:
1.what 引导词的考查，尤其位于介词后引导的宾语从句以及引导名词性从句时的双重作用。
2.Whether和if 的区别，尤其注意他们的不同之处。
3.名词性从句和其它从句的兼容结构测试。
4.句子语序和时态。
具体说:
1.掌握名词性从句的分类功能
名词性从句根据其在主句的功能作用又可分为主语从句、宾语从句、表语从句和同位语从句。
***1*** 若从句在句中作主语为主语从句
***2*** 若从句在句中作宾语为宾语从句
***3***若从句在句中作表语为表语从句
***4*** 若从句在句中作同位语为同位语从句
2.掌握连词的含义及分类
绝大多数名词性从句的连词都有其实在意义，称为有义连词，如what表“……的内容”，when表“……的时间”，where表“……的地点”，why表“……的原因”，how表“如何;怎样”，who表“谁”，if, whether表“是否”;没有实在意义的连词叫无义连词，无义连词只有that一个。
3.掌握名词性从句的语序
名词性从句用陈述语序。
4.掌握名词性从句和其它从句之间的关系
有些连词除引导名词性从句外还可引导其它从句，应掌握它们之间的关系。
***1*** if ,whether表"是否"时引导名词性从句;if表“如果”时引导条件状语从句;whether表“无论是否;不管是否”时引导让步状语从句。
***2*** when表“……的时间”，where表“……的地方”时引导名词从句;when表“当……的时候”引导时间状语从句，where表“……的地方”，且修饰行为动词时，引导地点状语从句;when, where从句作定语修饰先行词时引导定语从句。
（专题突破）
高考中考查名词性从句时，经常考查连接词的选用。解题时应先判断从句的类型，然后判断从句是否缺少成分以及意义是否完整，最后根据引导名词性从句的连词的特点确定特定的连接词。要求学生在做题中要注意如下几点:
1.分析结构，辨析名词性从句和状语从句;
2.理解句意，正确区别引导词;
3.按照句意，出现那个引导词意思，便选择那个引导词。
（专题巩固）
1. A warm thought suddenly came to me _______I might use the pocket money to buy some flowers for my mother’s birthday .
A. if B. when C. that D. which
2. See the flag on top of the building ? That was _______ we did this morning.
A when B. which C. where D. what
3. The government has announced that a modern city will be set up in _______is still a wasteland now.
A. what B. which C. that D. where
4.Many people wrote articles on _______Liu Xiang had failed to compete in the event .
A. why B. what C. who D. that
5.The couple are spending their holiday on _______is described as one of the most beautiful islands.
A. that B. what C. which D. where
6.The book is meant to _______needs it .
A. who B. whoever C. whomever D. whom
7. In his speech, Premier Wen Jiabao points out that creativity is_______it takes to keep a nation highly competitive.
A. how B. what C. which D. that
8.The experience of the Chinese nation attests to a truth_______ a nation loses in times of disaster will be made up for by her progress.
A. that what B. what C. that D. what that
9._______has recently been done to provide more buses for the people ,a shortage of public vehicles remains a serious problem .
A. That B. What C. In spite of what D. Though what
10. _______is certain is _______prevention is more important than treatment.
A. It; that B. What; that C. As; what D. What; what
11. Nobody would stand out admitting the fact, for some reason, _______they lost the game.
A. that B. which C. what D. why
12.-The patient looks much better. _______is it that has made him_______he is today?
-Perhaps the special medicine and his family’s patient care.
A.What; that B.That; that C.What; what D.What; which
13. After three hours’ climbing , they reached _______ they thought was the place they’d been dreaming of .
A.what B.which C.where D.that
14. A plan has been put forward _______more graduates should go to work in the country
A. when B. that C. whether D. how
15.It is pretty well understood _______controls the flow of carbon dioxide in and out the atmosphere today.
A. that B. when C. what D. how
16.***2009· 湖南卷*** She is very dear to us. We have been prepared to do _______it takes to save her life.
A. whichever B. however C. whatever D. whoever
17.***2009·陕西卷*** The how- to book can be of help to _______wants to do the job.
A. who B. whomever C. no matter who D. whoever
18.***2009· 安徽卷*** A good friend of mine from I was born showed up at my home right before I left for Beijing.
A. how B. whom C. when D. which
19.***2009·江苏卷***Many young people in the West are expected to leave_______could be life’s most important decision-marriage-almost entirely up to luck.
A. as B. that C. which D. what
20. ***2009·浙江卷***-Is there any possibility ______ you could pick me up at the airport?
-No problem.
A. when B. that C. whether D. what
（参考答案及解析）
1. C 句意:我脑海中突然出现一个温情的念头，用我的零花钱给妈妈买些鲜花作为她的生日礼物。本题考察名词性从句用法。I might use the pocket money to buy some flowers for my mother’s birthday .做A warm thought 的同位语从句。中间被suddenly came to me隔开，增加了试题难度。此外，部分考生由于对同位语从句和定语从句不分，故错选D为答案。
2. D 表语从句中缺did的宾语。
3. A “_______is still a wasteland now .”做介词in的宾语从句，从句中缺主语句意为:政府已经宣布一座现代化的城市将在这片现在仍是废墟的地方建成。
4. A“_______Liu Xiang had failed to compete in the event.”做介词on的宾语，宾语从句中不缺主干，故排除B和C。另外that不引导介词的宾语从句***固定搭配除外***，所以排除D。
5. B “_______is described as one of the most beautiful islands .”宾语从句，从句中缺少主语，
6. B whoever在宾语从句中做主语，部分学生，因为只看到介词to，误认为要添whomever做介词的宾语。
7. B “_______it takes to keep a nation highly competitive.”做表语从句，从句中缺少takes的宾语，构成 it takes sth to do sth 结构。
8. A本题句子结构比较复杂，“_______ a nation loses in times of disaster will be made up for by her progress”做a truth的同位语从句，同位语从句中_______ a nation loses in times of disaster为主语从句。本句共有两个从句，故有两个引导词。句意为“中华民族的经验证明了一个真理，即，一个民族在灾难中失去的，必将从民族的进步中得到补偿。
9. C “_______has recently been done to provide more buses for the people”在句中做让步状语,而D. Though what错误, 因为, 一个单一的从句不能用两个连词引导.句意: 尽管在为人们提供更多公交车这件事上, 投入了很多, 但是公交工具的缺乏, 仍然是个问题.
10.B “_______is certain”在句中做主语,主语从句缺少一个主语,需要用What; “_______prevention is more important than treatment .”系表语从句,句意与结构完整,只有that,可以这样用。
11.A“_______ they lost the game.”在句子中做the fact 的同位语从句,从句意思结构完整,结构完整。
12. C先将句子结构理清楚，it is _______that has made him _______he is today 就可以判断，第一个空是考察强调句型的特殊疑问形式;第二个空则是表语从句，表语从句中缺少he is的表语。句意:病人好多了，是什么使得他成为现在这个样子。
13. A考生误以为是地点状语从句，误选C.where。而reached是及物动词，后边接的是宾语从句，宾语从句除去插入语they thought，应该缺主语。
14.B 考察同位语从句，表达A plan的具体内容，has been put forward将名词与从句隔开，加大了难度。
15.C 主要测试主语从句。分析句子结构可知:句子属于形式主语格式;另外主句中缺少主语。双重作用的引导词只能是what。例如:It is still doubtful what he said at the meeting yesterday。昨天他在会上说的话仍然值得怀疑。
16.C 名词性从句的引导词。句意为:她对我们来说是非常宝贵，我们已经准备好做一切来拯救她的生命。
17.D 此处从句作介词to的宾语，是名词性从句，引导词作从句的主语，指人，意思是:无论是谁，选D。
18.C 考查名词性从句，介词from后除了接代词或名词作宾语外，还可接介词短语或副词短语作宾语;由后面“I was born”可以推测from后面可以指时间，也可以指地点，再由所给的选项可得出答案。
19.D 考查名词性从句。宾语从句中缺少主语，因此选what。
20. B考查同位语从句。此处是由what引导的同位语从句，表示“你有没有可能来机场接我?”。所以选B项。
以上就是英语名词性从句课件的推荐，相信通过英语名词性从句课件这篇文章能帮到你，也欢迎对游戏很感兴趣小伙伴们一起来探讨。