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 sp eak tois 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 .【点拨】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
I t 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 b irthday .
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 an d 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。
what引导名词性从句的五种用法 一、用法归纳 1. 表示“……的东西或事情”： They’ve done what they can to help her. 他们已经尽力帮助了她。 He saves what he earns. 他赚多少，积蓄多少。 What Mary is is the secretary. 玛丽的职务是秘书。 2. 表示“……的人或的样子”： He is no longer what he was. 他已经不是以前的那个样子。 He is what is generally called a traitor. 他就是人们通常所说的叛徒。 Who is it that has made Fred what he is now? 是谁把弗雷德培养成现在这个样子的？ 3. 表示“……的数量或数目”： Our income is now double what it was ten years ago. 我们现在的收入是10年前的两倍。 The number of the students in our school is ten times what it was before liberation. 现在我校学生的数量是解放前的10倍。 4. 表示“……的时间”： After what seemed like hours he came out with a bitter smile. 似乎过了几个小时他才苦笑着出来。 The young girl was too frightened to speak, standing there for what seemed like hours. 小女孩吓得不敢说话，在那儿站了几个小时。 5. 表示“……的地方”： This is what they call Salt Lake City. 这就是他们称为盐湖城的地方。 In 1492, Columbus reached what is now called America. 1492年哥伦布到达了现在所称的美洲大陆。 二、用法说明 (1) 这样用的what相当于“先行词+关系代词”，所以其前不能有先行词： 你喜欢什么就拿什么吧。 正：You can have what you like. / You can have everything (that) you like. 误：You can have everything what you like. (2) 有时what 可用作限定词，其后修饰一个名词： I gave him what books I had. 我把我所有的书都给他了。 He gave me what money he had about him. 他把身边带有的钱全给了我。 (3) 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： 误：I gave him what book I had.
名词性从句用法详解 一、概说名词性从句，即指性质相当于名词的从句，它包括主语从句、宾语从句、表语从句和同位语从句。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 that 只起连接作用，没有任何意思，也不充当句子成分，在宾语从句中可省略，但引导其他名词性从句时通常不省略。如： I hope (that) you enjoy your holiday. 希望你假期过得好。（宾语从句可省） That he likes you is very obvious. 很显然他喜欢你。（That引导主语从句不能省） 2. 连接词 whether 也不充当句子成分，但有自己的意思，表示“是否”；引导宾语从句时，可换成 if，但引导其他名词性从句时不能换成 if。 He asked whether [if] I would show him the way. 他问我是否可以给他带路。 Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。(引导主语从句，不能用 if 代替 whether) 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 why she wanted to leave. 这就是她想离开的原因。 When we arrive doesn't matter. 什么时候到没有关系。 Tell me which one you like best. 告诉我你最喜欢哪一个。 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 how we should carry out the plan. 问题是怎样执行这个计划。 When she’ll be back depends much on the weather. 她什么时候回来在很大程度上要看天气。 Why he did it will remain a puzzle forever. 他为什么这样做将永远是一个谜。 三、名词性从句的重要引导词 1. what 用于引导名词性从句是一个十分重要的引导词，它可引导主语从句、宾语从句和表语从句，但不用于引导同位语从句。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。 如： I don’t know what you want. 我不知道你想要什么。 I don’t know what you want is this. 我不知道你所想要的是这个。 2. whoever, whatever, whichever 等也可引导名词性从句，其意分别为“所…的一切事或东西”、“任何…的人”、““…的任可人或物”等。如： Whoever wants the book may have it. 任何人要这书都可拿去。 I’ll do whatever I can to help him. 我们将尽我们所能来挽救他。 注意以下受汉语意思影响而弄错的句子： 任何人来都欢迎。 误：Who comes will be welcome. / Anyone comes will be welcome. 正：Whoever comes will be welcome. / Anyone who comes will be welcome. 另外，它们也可引导让步状语从句，其意为“无论…”、“不管…”，其意相当于no matter who [what, which]。如： Whatever happens, you must be calm. 不管发生什么情况，你都必须镇静。(whatever = no matter what)
what引导名词性从句 what引导主语从句 1. What David used to say was always new and worth hearing and all his pupils loved him. 2. What makes the book so special is the name of the writer. 3. What impresses me about his painting is the colors he uses. 4. What you said at the meeting describes a bright future for the company. 5. What is important is that we let others know we care about them. 解析考查主语从句的引导词。根据句子结构可知，系动词is前的句子缺少主语，表示“重要的事情”要用what。 6. What some people regard as a drawback is seen as a plus by many others. 意思：一些人看作是缺点的东西却被许多其他的人看作优点. 7. What struck me most in the movie was the father's deep love for his son. 解析本题考查主语从句。句意：这部电影让我最感动的地方就是父亲对儿子的深深的爱。主句谓语动词was之前为主语从句，其中缺少主语指事物，故使用代词what。
What引导宾语从句 1.I’m interested in what you’ve sai d. (介词后的宾语从句) 2. Tina is much more confident behind the wheel than what she was when she started. (介词后的宾语从句) 3. If you swim in a river or lake, be sure to investigate what is below the water surface. Often there are rocks or branches hidden in the water. 解析如果你在河里或湖里游泳的话，务必调查清楚水面之下有什么。水中经常隐藏着石头或树枝。根据后面rocks and branches可知，此处要用what来引导。 4. Reading her biography，I was lost in admiration for what Doris Lessing had achieved in literature. 解析句意：读了多丽丝·莱辛的传记，我很钦佩她在文学上获得的成就。考查名词性从句。考查宾语从句的连接词。在介词for后的是宾语从句，从句中缺少achieve的宾语，故用what引导。(介词后的宾语从句) 5. Pick yourself up.Courage is doing what you're afraid to do. 解析考查名词性从句。句意：跌倒后再站起来。勇气是做你不敢做的事情。这里含有一个宾语从句，引导词在从句中作do的宾语，所以用what。 6. It is difficult for us to imagine what life was like for slaves in the ancient world.
一、在名词从句中连接词which 有两种词性, 常用来引导宾语从句： 1. [连接代词] 哪个 1）用作从句的主语，如： He wanted to know which was on the table. 他想知道哪一个在桌子上。 2) 用作从句的宾语，如： He asked me which I liked best. 他问我最喜欢哪一个。 2. [连接形容词]放在名词前作定语，表示“哪个XX，哪些XX”，如： Do you wnow Which country is the largest? 你知道哪国家一个最大? Could tell me which children made him still more angry. 能告诉我那些 孩子使他更加生气了。 二、which 除引导上述宾语从句外，还可以引导主语从句和表语从句。 1. 主语从句(常用形式主语it) It was clear which children made him still more angry. 显而易见那些孩子使他更加生气了。 It is known to us which he liked best. 众所周知他最喜欢哪一个。 2. 表语从句 That was which children made him still more angry. 那就是那些孩子使他更加生气了。 This is which he liked best. 这就是他最喜欢哪一个。 三、which 与what 的区别 用在名词从句中，which 意思是“哪一个/那一些”，what 意思是“所...的”，后者等于“先行词+关系代词”，如你的补充问题就需要选择what： It's quite different from what I read last month. = It's quite different from (the one that) I read last month. 这本书与我上周所读过的那一本区别很大。 1.that在所有名词性从句中无成分无意义。 2.which强调哪一个，有一个选择的范围。 从句中from后边缺宾语，所以要选择的是宾语从句的引导词，首先that引导宾语从句时，不做介词宾语（除了in,except,but) 其次read后边缺宾语，也就是从句中缺成分，参见上面第一条，所以排除that.B选项which指哪一个，这里
名词性从句归纳 一、名词性从句概说、结构与功能 名词性从句是起名词作用的从句，其功能相当于名词词组，在复合句中可作主语、宾语、表语和同位语。与之对应的名词性从句分别为主语从句、宾语从句、表语从句和同位语从句。 二、主语从句 1、主语从句的类别 ●以从属连词that 引导的主语从句。（从句位于句首，that通常不省略） → That she will come to the conference has excited every one of us. ●以从属连词whether 引导的主语从句。（从句置于句首时一般不用if来代替whether） → Whether we’ll go outing depends on the weath er. ●以连接代词（what, whatever, who, whoever, which, whichever等词）引导的主语从句。 → Whoever will be in charge of the project hasn’t been decided yet. 【注】what 与that在引导主语从句时，what 不但起连接作用，而且还有具体意义，意为“所…的”，相当于the things that结构；而that则无词义。即如果从句中不缺少主语或宾语时，选择that，否则用what。 ●以连接副词（when，where, how, why 等词）引导的主语从句. → When the new road is open to traffic has not been made clear. 2、用it 作形式主语的主语从句 注：以下几种特殊情况必须用it作形式主语： ⑴ It is + adj. + that 从句 常见的形容词有：necessary，right，likely，wrong，important，certain，clear，obvious，strange 等。 → It is likely that there will be a snowstorm tomorrow. ⑵ It is + noun + that 从句 常接这种句型的名词有：a pity, a shame, good news, a fact, an honor, a wonder, no wonder 等。 → It is a pity that you didn’t attend the lecture [讲座] yesterday. ⑶It is + 过去分词
【英语】英语名词性从句解题技巧讲解及练习题(含答案) 一、初中英语名词性从句 1．_______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today. A. What; what B. That; that C. What; that D. That; what 【答案】 C 【解析】【分析】句意：让我感到担忧的是，今天的歌星是以青少年为中心的。分析句子可知，主语从句中的谓语动词makes 缺少主语，主语从句中缺少宾语一般用what，因此选择 what 来引导主语从句；系动词 is 后面的表语从句句意完整，不缺少成分，因此选择 that 引导表语从句。分析选项可知C项符合题意，故选C。 【点评】考查名词性从句，本题涉及what引导的主语从句和that引导的表语从句的应用。 2．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A. As; whose B. It; whose C. As; whom D. 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。第一空it is known to us all that…是个固定句型，意为“众所周知…”；第二空为介词+关系代词引导的定语从句，先行词the old scientist指人，作介词for的宾语，只能用whom，故选D。 【点评】考查名词性从句和定语从句，本题涉及固定句式it is known to us all that…和whom引导的限制性定语从句。 3．Some people believe _______ has happened before or is happening now will repeat itself in the future. A. whatever B. whenever C. wherever D. no matter what 【答案】 A 【解析】【分析】句意：一些人认为之前发生的或现在正在发生的任何事情在将来都会重复发生。Whatever has happened before or is happening now是一个主语从句，whatever既引导起这个主语从句，也在句中做主语。BC项都属于副词的性质，都不能做主语，通常只能做状语；no matter what只能用来引导状语从句，故选A。 【点评】考查名词性从句，本题涉及"特殊疑问词+ever"引导的主语从句。 4． is even more important is the earth cooled down, water began to appear on its surface.
名词性从句用法归纳Mar 3, 2011 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。它们的作用相当于名词，因此为名词性从句。 一. 主语从句 引导词：连词that, whether; 连接代词who / whoever，what / whatever，which ； 连接副词when, where, how, why。 1.That 1) That computers have changed our life is clear to everyone. = It’s clear to everyone that computers have changed our life. 2) That children must go to school is accepted by us all. = It’s accepted by us all that children must go to school. 3) That you are from Tangshan can be judged from your accent. = It can be judged from your accent that you are from Tangshan. 结论：that 无含义, 不做成分。 2. what 1）What I can’t understand is why he is often absent from school. 2）What parents say and do has a life-long effect on their children. (07 陕西) 3）What matters most in learning English is enough practice. (07 全国） 结论：what “所…的”，在从句中做成分。 3. whatever 1)Whatever was said here must be kept a secret. 2)Whatever David says sounds right to Helen. 3)Whatever I may do is supported by my parents. 4. whoever 1)Whoever works hard is respected by others. 2)Whoever breaks school rules will be punished.
名词性从句用法详解 一、概说 名词性从句，即指性质相当于名词的从句，它包括主语从句、宾语从句、表语从句和同位语从句。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that 只起连接作用，没有任何意思，也不充当句子成分，在宾语从句中可省略，但引导其他名词性从句时通常不省略。如： I hope (that) you enjoy your holiday. 希望你假期过得好。 That he likes you is very obvious. 很显然他喜欢你。 2. 连接词whether 也不充当句子成分，但有自己的意思，表示“是否”；引导宾语从句时，可换成if，但引导其他名词性从句时不能换成if。如： He asked whether [if] I would show him the way. 他问我是否可以给他带路。 Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。(引导主语从句，不能用if 代替whether) 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 why she wanted to leave. 这就是她想离开的原因。 When we arrive doesn't matter. 什么时候到没有关系。 Tell me which one you like best. 告诉我你最喜欢哪一个。 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 how we should carry out the plan. 问题是怎样执行这个计划。 When she’ll be back depends much on the weather. 她什么时候回来在很大程度上要看天气。 Why he did it will remain a puzzle forever. 他为什么这样做将永远是一个谜。 三、名词性从句的重要引导词 1. what 用于引导名词性从句是一个十分重要的引导词，它可引导主语从句、宾语从句和表语从句，但不用于引导同位语从句。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。如： I don’t know what you want. 我不知道你想要什么。 I don’t know what you want is this. 我不知道你所想要的是这个。 2. what 引导名词性从句时可用作限定词，其后修饰名词。如： I gave him what books I had. 我把我所有的书都给他了。 He gave me what money he had about him. 他把身边带有的钱全给了我。 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与whatever引导的从句 作者：佚名文章来源：本站原创点击数：777 更新时间：2014-6-28 what与whatever引导名词性从句的区别 what和whatever作为引导词来引导从句，它们之间到底有什么异同点？what只能引导名词性从句 ，如主语从句、宾语从句、表语从句和同位语从句，whatever既可以引导名词性从句，又可以引导让 步状语从句。 一、what引导名词性从句 what引导名词性从句时，可在主语从句、宾语从句、表语从句和同位语从句中充当成分，其意思 主要有以下两种：一是含有疑问含义，表示“什么……”；二是相当于“名词/代词+关系代词引导的 定语从句”结构，意为“……的事情/东西/样子/颜色”等。 下面我们看看what在句中的意思以及相应的句子转换。 1. I have tried my best to do what I can to help him. 为了帮助他，我已经尽我的最大努力去做我所能做的事情。 what引导宾语从句，在句中相当于the thing that。 2. Before a problem can be solved，it must be obvious what the problem is. 在解决问题前，我们必须要弄清楚问题是什么。 it 为形式主语，what引导主语从句，且在从句中作表语，what在句中意为“什么”，表示疑问 。 3. Do you have any idea what is actually going on in the classroom？ 你知道教室里正在发生什么事情吗？ what引导同位语从句，此处what也表示疑问，意为“什么”，且what在从句中作主语。 4. —Are you still thinking about yesterday’s game？ —Oh，that’s ____. A. what makes me feel excited B. whatever I feel excited about C. how I feel about it D. when I feel excited
常见名词性从句最全总结 一、初中英语名词性从句 1．______ will be in charge of the meeting has not been decided yet. A. What B. Which C. That D. 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．It________that the road will be closed tomorrow for repairs. A. was announced B. has been announced C. had been announced D. would be announced 【答案】 B 【解析】【分析】本题考查动词的时态和语态。题干句子中that到句子结束是宾语从句，且从句动词用“will＋动词原形”表示将来，由此推断出空白处谓语动词应用现在的某种时态，在所给四个选项中，只有B项正确。 【点评】考查现在完成时的被动语态，其结构是have/has +been +done。需要注意宾语从句的时态。主句用现在时，从句所需的任何时态。 3．Has it been announced ______? A. when are the planes to take off B. that are the planes to take off C. where are the planes to take off D. when the planes are to take off 【答案】 D 【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗？此处是when引导的主语从句，且要用陈述句语序，故选D。 【点评】考查名词性从句，it作形式主语，关系副词when引导的从句作真正的主语。 4．Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird's nest”. A. which B. that C. what D. where 【答案】 C 【解析】【分析】考查主语从句。What引导主语从句______ I call my “home”且 What在从句中充当call的宾语。故选C。 5．They lost their way in the forest, and ___ made matters worse was that night began to fall. A. it B. which C. that D. what
高一语法专题：名词性从句 在句子中起名词作用的从句叫名词性从句。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，因此根据它在句中不同的语法功能，名词性 从句又可分为主语从句、宾语从句、表语从句、同位语从句。 引导名词性从句的词叫做连接词，包括：1. 连词（在名词性从句中只起连接作用，不 作成分） 2. 连接代词（在名词性从句中作主语、宾语 或表语） 3. 连接副词（在名词性从句中作状语） I 主语从句：是在主句中作主语的从句。它由连接词引导，通常位于谓语动词之前。 连接词：
1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。 That he got the first prize excited him much. 他获得一等奖一事使他非常兴奋。 It is doubtful whether we can get there on time. 我们能否按时到达那儿还不确定。 1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。一般情况 下that不可省略。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don't like him is none of my business. 你不喜欢他不关我的事。 2）whether引导的主语从句：常置于句首，表示“是否”之意；
Whether he can finish his task on time is of great importance. 他是否能按时完成任务非常重要。 Whether you can succeed or not depends on how hard you work at it. 你能否成功取决于你努力的程度。 2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具 体意义且不能省略。常见的连接代词有who, whom, whose, what, which, whoever, whomever, whatever, whichever。 What we should do with the problem is undecided. 我们如何处理这个问题还未作出决定。（what引导主语从句，不表疑问意义） Whom the letter was from is still unknown.
名词性从句知识点梳理及经典练习(超详细) 一、名词性从句 1． ---- Let's send him home. Do you know _________? ---- I have no idea. A. where does he live B. where he lives C. he where lives D. he lives where 【答案】 B 【解析】【分析】句意:----让我们把他送回家。你知道他住在哪里吗?----我不知道。宾语从句就是一个句子作动词或介词的宾语。宾语从句由特殊疑问句变来就用原来的疑问词作引导。在宾语从句中只能使用陈述句语序，不能用疑问句语序。所以选B。 2． is clear to the members of the committee is that the President will not give in to their demands. A. Who B. It C. As D. 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; when B. What; whether; as C. What; that; as D. 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。选C。 4．In the past decade, our education system too much on grades. However, grades have a direct connection with future success is still a question. A. focused; whether B. focused; if C. has focused; whether D. has focused; if 【答案】 C
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。
what引导名词性从句的五种用法(高考语法要点) 注意：请你在what引导的从句下面划线，并指出其充当的成分。 一、用法归纳 1. 表示“……的东西或事情”相当于the things that…：例如： They’ve done what they can to help her. 他们已经尽力帮助了她。 He saves what he earns. 他赚多少，积蓄多少。 What Mary is is the secretary. 玛丽的职务是秘书。 2. 表示“……的人或的样子”相当于the per son that…。如： He is no longer what he was. 他已经不是以前的那个样子。 He is what is generally called a traitor. 他就是人们通常所说的叛徒。 Who is it that has made Fred what he is now? 是谁把弗雷德培养成现在这个样子的？ 3. 表示“……的数量或数目”相当于the amount/number that…。如：： Our income is now double what it was ten years ago. 我们现在的收入是10年前的两倍。 The number of the students in our school is ten times what it was before liberation. 现在我校学生的数量是解放前的10倍。 4. 表示“……的时间”相当于the time that…例如： After what seemed like hours he came out with a bitter smile.似乎过了几个小时他才苦笑着出来。 The young girl was too frightened to speak, standing there for what seemed like hours. 小女孩吓得不敢说话，在那儿站了几个小时。 5. 表示“……的地方”相当于the place that…。如： This is what they call Salt Lake City. 这就是他们称为盐湖城的地方。 In 1492, Columbus reached what is now called America. 1492年哥伦布到达了现在所称的美洲大陆。 What is now the North Sahara Desert was once a civilized world. 现在的撒哈拉沙漠的北部曾经是一个文明世界。 二、用法说明 (1) 这样用的what相当于“先行词+关系代词”，所以其前不能有先行词： 你喜欢什么就拿什么吧。 正：You can have what you like. / You can have everything (that) you like. 误：You can have everything what you like. (2) 有时what 可用作限定词，其后修饰一个名词： I gave him what books I had. 我把我所有的书都给他了。
英语语法名词性从句用法小结 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、同位语等，因此根据它在句中不同的语法功能，名词性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. 名词性从句的连接词 引导名词性从句的连接词可分为四类： 1. that（无含义，不充当成分） 2. whether, if（有“是否”的含义，但不充当成分） 3. 连接代词：what, whatever, who, whoever, whom, whomever,whose, which,whichever. （在从句中做主语、宾语、表语和定语） 连接副词：when, whenever,where,wherever, how, however,why（在从句中做状语） 4. as if,as though,because（不充当成分，在名词性从句中只引导表语从句） 二. 四类名词性从句语法要点 1.主语从句 在整个句子中用作主语的从句叫主语从句。 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。 it 作形式主语：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。 It is clear that he is innocent in the accident. 很明显，他在这场事故中是无辜的。 2. 宾语从句 在整个句子中用作宾语的从句叫宾语从句。 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。 it 作形式宾语：在“主语+谓语+宾语+宾补”的句型中，如果宾语是从句的形式，则必须 用it 做形式宾语，把真正的宾语即宾语从句置于句末。 We found it impossible that the so much work will be finidhed in one day. 我们发现一天之内完成这项工作不可能。 3. 表语从句 在整个句子中用作表语的从句叫表语从句。 The fact is that we have lost the game. 事实是我们已经输了这场比赛。 That is why he didn’t come t o the meeting.