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初中英语句法全攻略：名词性从句
教师：金春花
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一、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。
宾语从句：I don’t know what his name is.
主语从句：Who will come is still unknown.
表语从句：This is what he said.
同位语从句：The thought came to me that he wouldn’t come.
二、主语从句
1.定义：在复合句中充当主语成分的句子叫做主语从句。
2.主语从句的引导词：
（1）that：引导词that无含义，在句中不做成分，不可以省。
That he didn’t show up yesterday truly hurt me.
（2）whether：引导词whether表示“是否”，在句中不做成分，不可以省。另外注意：引导主语从句，不能用if，只能用whether。
Whether he will come is still unknown.
（3）连接代词：who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分.
What he wants to tell us is not clear.
（4）连接副词：when, where, why, how引导的名词性从句，其连接副词有含义,在句中作状语。Where the party will be held has not been decided yet.
3.It作形式主语的主语从句
（1）It’s +n.+ that+从句
It’s a pity that……（……很遗憾/很可惜）
It’s a fact that……（……是一个事实）
It’s a surprise that……（……令人惊讶）
It’s common knowledge that……（……是常识）
（2）It’s +adj. + that+从句
It’s possible that……（……是可能的）
It’s obvious that……（……是很明显的）
It’s unlikely that……（……是不可能的）
（3）It+不及物动词+ that+从句
It happened that……（碰巧……）
It occurred to me that……（我想到……）
（4）It +be+ 过去分词+that+从句
It’s said that……（据说……）
It’s reported that……（据报道……）
It’s known to all that……（众所周知……）
It is believed that……（人们相信……）
It must be pointed out that……（必须指出的是……）
三、表语从句
1.定义：用作表语的从句叫做表语从句。
2.表语从句的引导词：that, what, who, when, where, which, why, whether, how.
3.主要句型：
(1)The reason why……be+ that+……（……的原因是……）
The reason why I was late was that I got up late.
(2)That’s why……（这就是我为什么……）
I got up late. That’s why I was late.
四、同位语从句
1.同位语：一个名词(或其它形式)对另一个名词或代词进行修饰，限定或说明，这个名词(或其它形式)就是同位语。
Jim, my student, is a clever boy.
2.同位语从句：用作同位语的从句叫做同位语从句。
I heard of the news that it would rain tomorrow.
3.同位语从句的先行词：多为fact, news, idea, thought, question, reply, report, remark等具有抽象意义的名词，需要从句进行具体解释说明。
4. 例句
The hope that he may come here is not gone yet.
I have no idea when he will come back.
The truth that heavy objects and light objects fall at the same speed is known to all.
五、练习
练习1：英译汉
1. Doctors gradually realized that the environment in the hospital is important to the recovery of diseases. 宾语从句：医生慢慢意识到了医院的环境对病情恢复是很重要的。
2.More and more college students are faced with the fact that it is very hard to find a suitable job.
同位语从句：越来越多的大学生面临着这样一个事实：找一份合适的工作实属不易。
3. Whether the meeting will be held as planned hasn't been decided yet.
主语从句：会议是否会如期举行还没有被最后决定。
4.It is reported that so far 91 children have died.
主语从句：据报道，到目前为止，已经有91个孩子失去了生命。
5.The reason why my mother was sad was that she lost a bag.
表语从句：我妈妈伤心的原因是丢了一个包。
6.What makes me surprised is that so many people broke the world record with efforts.
主语从句、表语从句：令我惊异的是通过努力有这么多人打破了世界纪录。
练习2：汉译英
1.月球上有没有生命是个有趣的问题。
Whether there is life on the moon is an interesting question.
2.那就是他为什不到会的原因。
That’s why he didn’t come to the meeting.
练习3：自我挑战
请说出下列句子的句子类型并翻译。
1. What matters is whether you have tried to finish the task.
2 That he once came to China made all the people present very excited.
3. That is how he deals with it, which made me worried.
4. He felt that artists had lost his place in modern society and that art should be enjoyed by a larger audience.
5. As students, we should pay more attention to what teachers said and make full use of what we have.
6. The difficulty lies in the fact that attitudes towards the population growth vary from country to country.
7. When children grow up, they should be encouraged to do whatever housework they can do.
8. There is no doubt that the government will take measures to prevent the disease from spreading.
9. What is the most important thing for us to do is to protect the wild animals which are being threatened with extinction.
【习题答案】
1.表语从句：关键的是你有没有尽力去完成这个任务。
2.主语从句：他曾经来过中国使所有在场的人都激动不已。
3.表语从句：这就是他如何处理这件事的，这使我很担心。
4.宾语从句：他感到艺术家在现代社会中失去了地位和艺术应该为更多的观众所喜欢。
5.宾语从句：作为学生，我们应该对老师所说的多加注意而且好好利用我们所有的一切。
6.同位语从句：困难在于这个事实，国与国对人口增长的态度不同。
7.宾语从句：孩子长大后，要鼓励他们做力所能及的家务。
8.同位语从句：毫无疑问政府会采取措施来阻止疾病的蔓延。
9.主语从句：在我们要做的最重要的事是保护那些正受到灭绝威胁的野生动物。
主语从句& 表语从句 【观察】观察下列句子中从句的用法，然后加以总结。 1. What we need is more time while what they need are more people. 2. It was not known whether/if he would come to the party. 3. Whether we will go fishing tomorrow depends on the weather. 4. Do you think it is necessary that we (should) have all the chairs replaced? 5. It is suggested that you (should) attend the opening ceremony. 6. The question remains whether they will be able to help us. 7. My suggestion is (that) you (should) discuss your problems with your parents first. 8. The reason why I was late this morning is that I missed the early bus. 9. He was very busy. That was why he didn’t come here. 10. Tom looked sad. That’s because he didn’t pass the exam. 11. The house smells as if it hasn’t been lived in for ye ars. 12. Dressed in red, she looks as if she were ten years younger. 13. Has it been decided when we’ll have the final examination? 【总结】 主语从句和表语从句都属于名词性从句。主语从句在复合句中作主语，表语从句在复合句中作表语。在具体的应用中要掌握以下几点： ● 引导词(详见P138-139, B7) 注意易错引导词： (1) 引导主语从句位于句首时只能用whether (如例句3)，句中可用if (如例句2)，引导表语从句只能用whether (如例句6)； (2) 主句的主语是reason时，表语从句要用that，不能用because引导(如例句8)； (3) 引导表语从句时，why强调结果(如例句9)，because强调原因(如例句10)； (4) that只起连接作用，不在从句中作成分，无词义。引导主语从句时不能省略，引导表语从句时可以省略。 ● it作形式主语 有时为避免句子头重脚轻，常用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。主句的谓语动词一般用单数形式： (1) 常用句型：It+be+名词词组/形容词/过去分词+ that从句(如例句4-5)； (2) 在由连词wh-引导的主语从句中，从句可放在句首，也可用it作形式主语而把从句放在句末(如例句2、 13)。 ● 语序：主语从句和表语从句必须用陈述语序。 ● 主谓一致 主语从句作主语时谓语动词用单数形式。what引导主语从句，主句的谓语动词多用单数形式，但若表语是复数时，谓语动词用复数形式(如例句1)。 ● 语气
主语从句、表语从句巩固训练题(附参考答案) 1. It has been proved _________ eating vegetables in childhood helps to protect you against serious illnesses in later life. A. if B. because C. when D. that 2. The last time we had great fun was ________ we were visiting the Water Park. A. where B. how C. when D. why 3. ________ matters most in learning English is enough practice. A. What B. Why C. Where D. Which 4. The traditional view is ______ we sleep because our brain is “programmed” to make use do so. A. when B. why C. whether D. that 5. ______ parents say and do has a life-long effect on their children. A. That B. Which C. What D. As 6.________ is our belief that improvements in health care will lead to a stronger, more prosperous economy. A. As B. That C. This D. It 7. ______ team wins on Saturday will go through to the national championships. A. No matter what B. No matter which C. Whatever D. Whichever 8. You are saying that everyone should be equal, and this is ______ I
※※※ 主语从句： 1. What he needs is the shirt of a happy person to wear. 2. What his father said made him think carefully. 3. Whether you can do this depends on your learning habits. ※※※ 表语从句： 1.It was exactly what I needed. 2.This is what he said. 3. That is because it is a very direct question. 4. That’s because he was a really good student. 5. Another popular idea is that Stonehenge might be a kind of calendar. 6. Other advantages of bike riding are that it’s good for health. 7. One of the greatest mysteries is how it was built because the stones are so big and heavy.
8. That’s how people in Japan are expected to greet each other. 9. That’s when I decided to change. 关键部位已标蓝： ※※※ 主语从句： 1. What he needs is the shirt of a happy person to wear. 2. What his father said made him think carefully. 3. Whether you can do this depends on your learning habits. ※※※ 表语从句： 3.It was exactly what I needed. 4.This is what he said. 3. That is because it is a very direct question. 4. That’s because he was a really good student.
从句小结 从句总述： 从句有主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类。 由于主语从句、表语从句、宾语从句及同位语从句在句子的功用相当于名词，故而这4种从句又通称名词性从句。 1.主语从句（Subject Clause）：用作主语的从句叫主语从句。引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。 2.表语从句（Predicative Clause）：用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都一样。 3.宾语从句（Object Clause）：在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句. 4. 同位语从句（Appositive Clause）：在复合句中用作同位语的从句叫同位语从句。它一般跟在某些名词后面，用以说明该名词表示的具体内容。其关联词多为that。 状语从句还可以分为条件状语从句、原因状语从句、方位状语从句和时间状语从句等。 宾语从句 学习宾语从句要抓住三要素：时态、语序、连接词。 一：时态和语序 1·主句用一般现在时，从句可用任意时态。 2·主句用过去时，从句用过去某个时态。 3·主句用过去时，从句是真理时，只用一般现在时。 语序：宾语从句只能用陈述句语序，坚决不能用疑问句语序。 二：连接词 ①从属连词 连接宾语从句的从属连词主要有that，if，whether. that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句. 例句： He told that he would go to the college the next year 他告诉我他下一年上大学. I don’t know if there will be a bus any more. 我不知道是否还会有公交车. ②连接代词 连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等. 连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述. 例句： Do you know who has won Red Alert game 你知道谁赢了这一局红警游戏吗 ③连接副词 连接副词主要有when,where,why,how,whenever,wherever,however等. 例句： He didn’t tell me when we should meet again. 他没有告诉我什么时候我们能再见面.
Ⅰ.用适当的连接词填空 1．The trouble is that I can’t find my way. 2．We are discussing what we shall do to help the poor. 3．It depends on whether you can do the work well. 4．I wonder how you are getting on with your studies. 5．He got caught in the heavy traffic.That was why he was late. 6．Energy is what makes things work. 7．We didn’t set out; it was because we wanted to wait until our mother came back. 8．We consider it necessary that he should improve his pronunciation. Ⅱ.单项填空 1．—Can you join us in the party this evening? —Well, that depends on ________ I can finish my report before then. A．whether B．if C．that D．when 解析：选A。句意：“你今天晚上能参加我们的聚会吗？”“嗯，那得看到时候我的报 告能不能完成。”连词whether表示“是否”，引导宾语从句。if表示“是否”，不引导介词的宾语从句；that没有意义；when“当……时”。 2．I don’t think ________ possible ________ one can master a foreign language without much memory work. A．it; whether B．it; that C．which; whether D．this; that 解析：选B。it在句中作形式宾语；possible作宾补；真正的宾语是that引导的宾语从句。 3．He said________he had eaten nothing for a long time and________he was very hungry. A．that; 不填B．不填；that C．不填；不填D．what; what 解析：选B。考查宾语从句中that的省略问题。said后接了两个that引导的宾语从句，其中第一个从句中的that可省略，后面的that不可省略。 4．The reason for his coming to China was ________ he wanted to study Chinese medicine. A．that B．what
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, why 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。 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。 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… 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。
宾语从句和表语从句详解 名词性从句指的是在整个句子中起名词作用的从句。这种从句可以做主语、宾语、表语、同位语等，所以这类从句包括主语从句、宾语从句、表语从句和同位语从句。各种名词性从句的结构都是相同的，即由if，whether，that和各种疑问词充当连接词，后接陈述语序。 例如：What they are doing seems very important．（主语从句） 他们在做的事似乎很重要。 My hope is that he will be the best student in the class．（表语从句） 我的愿望是他能够成为班上最好的学生。 Nobody knows who he is．（宾语从句） 大家都不知道他是谁。 I don't like the idea that money is everything．（同位语从句） 我不喜欢金钱就是一切这一观点。 引导名词性从句的连接词中，除了that，if和whether之外其它的都作从句中的一个成分。 【宾语从句】 在句子中作动词或介词宾语的从句叫做宾语从句。引导宾语从句的词有连词that，whether，if；连接代词who，which，what以及其强调形式whoever，whichever，whatever；连接副词when，where，why，how等。 例如：Do you know where the Greens live I have no interest in how rich he is． 宾语从句主要用于下面五种结构： 1．由that引导的宾语从句（that 引导宾语从句时，特别是在口语中可省略） The boy believes that he will travel through space to other planets． that引导的宾语从句多用于say，think，insist，wish，hope，demand，imagine，wonder，know，suppose，see，believe，agree，admit，deny，expect，explain，order，command，feel，dream，suggest，hear，mean，notice，prefer，request，require，propose，declare，report等后。 当主句谓语动词是think，believe，suppose，expect 等词，而宾语从句的意思是否定时，常把否定转移至主句表示。例如：I don’t think it is right for him to treat you like that．（＝I think it is not right for him …．） that不能省略的情况： （1）当句中的动词后接多于两个由that引导的宾语从句时，第一个that可省，但后面的that不可省。如： He said （that）you were too young to understand the matter and that he was asked not to tell you． （2）当主句的谓语动词与that宾语从句之间有插入语时，that一般不可省。如： Just then I noticed，for the first time，that our master was wearing his fine green coat and his black silk cap． （3）当that从句是双宾语中的直接宾语时，that不可省。如： I can’t tell him that his mother died． 2．由特殊疑问词引导的宾语从句 这样的宾语从句实际上是由特殊疑问句变化而来的，宾语从句要用陈述句语序。用于这种结构的动词常常是：see，say，tell，ask，answer，know，decide，show，find out，imagine，suggest，doubt，wonder，discover，understand，inform，advise等。
主语从句和表语从句 知识点 1.名词性从句引导词的选择 选择原则“缺什么，补什么，什么不缺，用that” “什么不缺，用that”的意思是：如果从句中不缺任何成分，而且句意完整时，就用that来引导主语从句或表语从句以及其他的名词性从句。 2.whether 意为“是否”，引导的主语从句放在句首，不能用if 代替；但当用 it 作形式主语时，whether引导的主语从句放在句中或句末，此时可换用if. It is doubtful whether there’ll be any seats left.说不上是否还有座位了。 3.that 引导主语从句时，只起连接作用，不作任何成分，没有实际意义。在句 首时不可省略。What引导主语从句时既要起连接作用，又要在从句中作主语或宾语，在任何情况下都不能省略，它具有具体意义，表示“什么，所…… 的（事、物、话）”，相当于all that/ everything that. Which引导主语从句也作成分，它表示选择的意义，常译为“那个”。如：That he survived in the earthquake is a miracle. 他在地震中幸免于难，这是个奇迹。 4.关系代词what, which, who引导主语、表语从句时含有疑问意义，而whatever, whichever, whoever在引导名词性从句时，往往比what, which, who更强调，不表示疑问意义。而且whatever=all that/everything that; whichever=anything that; whoever=anyone who.另外，whatever=no matter what时引导状语从句。如：Whatever is worth doing at all is worth doing well.凡是值得做的事情都值得好好地做。 I语法填空。使用正确连接词补全下列句子。 1.They lost their way in the forest and ______made matters worse was ______ night began to fall. 2.______ drives after drinking should be punished. 3.It is said ______ Peter will have a chance to travel abroad next month. 4.______ we fear when traveling in summer is the sudden change of weather. 5.______ we will go camping tomorrow is up to you. 6.I read about it in some book or other, does it matter ______ it was? 7.______ of you comes in will be given a prize.
主语从句与宾语从句 一、名词性从句是四位从句的总称：主语从句、宾语从句、同位语从句、表语从句。这些从句都起到类似于名词的作用。 主从：一个句子充当大句子的主语，就叫主语从句。例如； What I need is money.(主语是What I need作大句的主语) It was not obvious that water is fundamental to the development of life.（It是形式主语，真正的主语是that 从句。） 主语从句的位置有两种，一种是放于句首；一种是用It 作形式主语，从句被放后面。 二、宾语从句：一个小句子充当大句子的宾语。 He asked me how old I was . She took it for granted that I’d be back home an hour ago.（It 作形式宾语，真正的宾语是后面的that从句。） 考点一：语序 What I want to do is to go home immediately.陈述语序。 I asked where the famous restaurant was .陈述语序。 名词性从句的语序应该是陈述句语序。 删除疑问语序（be /助动词、情态动词+主语） 考点二：引导词 That（没成分） That the earth moves around the sun is known to all.(that 引导的句子作大句子的主语，that不能丢。) Whether /if （有时互换，主语从句只能用wheather引导，不能用if .可用if 的地方都能用wheather。） Whether the meeting will be put off depends on the weather . 疑问代词：what,who, whom,which,whose 在从句中有成分 What he has is just money.（在从句中有成分作宾语） 疑问副词：where ,when,why,,how在从句中有成分 Why he didn’t attend class is not know yet. That：引导名词性从句时无成分，无词义，有时可以省略。 Whether /if引导名词性从句时无成分，是否。 特殊疑问代词：主，宾，表，定。 疑问副词：状。 考点三：no matter+疑问词（what）VS疑问词（what）+ever Whatever he says must be put down . No matter what he says/Whatever he says,I will not change my mind. 意思相同，但语法不一样。第一句主从，第二句让步状语从句。以ever开头的引导主从或者状语从句，而以no matter 开头的不能引导名词性从句，只能引导状语从句，所以选ever 就一定对。 考点四：建议、命令、要求类+宾从 The doctor suggested that an operation (should)be done immediately on the patient. 初中讲过当主句是一般过去时态的宾语从句：主过去，从句也过去。当主句的动词是建议、命令、要求类的动词时，后面的宾从必须是should+动词原形且should可以省略。此时不管。主语是谁，不管主句是什么时态都不能改变动词是原形的要求.once表示建议、命令、要求类的动词suggest,advise,propose,demand,require,insist,request,ask,command,order后面如果后
表语从句与主语从句 表语从句和主语从句以及宾语从句都要用陈述语序。 Ⅰ.表语从句 在复合句中，位于系动词之后作表语的从句称为表语从句。它位于主句的系动词之后， 最为重要的是我们应该为牛找到足够的水。 The doubt is who has taken away the valuable vase. （主语，人） 疑点是谁拿走了那只贵重的花瓶。 My topic today is what most scientists are researching.（宾语，物，没有选择范围） 我今天的话题就是大多数科学家正在研究的课题。 The problem is which school will be chosen.(which在从句中作定语) 问题是哪一所学校将被选中。 All this was over twenty years ago，but it’s as if it was only yesterday. 这都是20多年前的事了，但宛如昨天一样。 表语从句中应注意的问题 (1)because，why引导的表语从句。 because引导表语从句时，表示“因为”，why引导表语从句时，表示“……的原因”，相当于the reason why。 That’s because he didn’t understand me. (That’s because...强调原因) 那是因为他不理解我。 That’s why he got angry with me. (That’s why...强调结果) 那正是他对我生气的原因。 (2)what引导的主语从句表示结果或名词reason作主语时，后面的表语从句表示原因时要用that引导，不宜用because。 What cost him his life was that he was too careless. 使他丧命的原因是他太粗心了。 The reason why I was sad/for my being sad was that he didn’t understand me. 我难过的原因是他不理解我。 (3)使用虚拟语气的表语从句 在表示建议、劝告、命令含义的名词后的表语从句中，谓语动词需用“should＋动词原形”表示，should可省略。常见的词有：advice，suggestion，order，proposal，plan，idea，request，requirement等。 My suggestion is that we (should) have a discussion about this matter instead of just laying it aside. 我的建议是我们应当讨论一下这个问题，而不应该把它放在一边。 （4）as if/as though引导的表语从句常置于系动词look，seem，sound，be，become等后面，常用虚拟语气，即形式常用过去式的某种时态。
高中语法—主语从句+表语从句+同位语从句 讲解 ●主语从句 一．定义：在句中起主语作用的从句 二．语序—陈述句语序 When will he come is not known. × →When he will come is not known Whether can animals be well protected is of great importance.× →Whether animals can be well protected is of great importance. →陈述句语序：连接词+主语+谓语+其他成分 三．连接词 1.从属连词：that/whether ①that：没有意义，不作成分，不可省略---That everyone likes Doraemon is amazing. (that=口袋→把句子装起来）@3.10,25,28,30 ②whether“是否”不可省略,不可用if代替---Whether they would support us was a problem. （if“如果”有歧义）@4.5 ,31 2.连接代词 ①who,whom,what,which,whose,whoever,whomever,whatever,whichever ②特定意义，不可省略 ③在主语从句中做成分 What we need is water.---作宾语@29 Who will go makes no difference.---作主语@12，14,17,19，#4,12 Who he is remains uncertain.---作表语 Whose shirt it is remains unknown. ---作定语#16 →连接代词在宾语从句中作宾语，主语，表语，定语 *Whoever(Anyone who) wants to enter into this school must take the exam. ---无论是谁@18 *Whatever(Anything that) she did was right. ---无论什么@2 3.连接副词 ①when,why,how,where ②特定意义，不可省略 ③作状语，表示时间，地点，原因，方式 When he will be back depends on the weather.---时间状语 Where the test will be given is not yet decided.---地点状语#14 Why dinosaurs died out remains a puzzle.---原因状语#13 How this happened is not clear to anyone. ---方式状语 四．时态：不受主句的时态影响和限制 五．It作形式主语 1.结构it is...that...（无意义，不做成分） ①It is certain that she will do well in her exam. →It is+a.+that... ②It’s a pity that we can’t go.→It is+n.词组+that...(no wander难怪，an honor荣耀）@1，16,20 ③It is said that Tiny Times is a good movie
雅思阅读考试--主语从句 在复合句中用作主语的从句称为主语从句(subject clause)。引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。如： That they were in truth sisters was clear from the facial resemblance between them. 很明显，她们的确是亲姊妹，她们的脸型很相似。(关联词是从属连词that) Who should be responsible for the senior citizens has been widely discussed in our community. 谁应该对老年人负责这个问题在社区里被广泛讨论。(关联词是疑问代词who) Where we can dispose of the increasing rubbish is a great headache to many governments. 在哪儿处置日益增多的垃圾对很多政府而言是件头痛的事。(关联词是疑问副词where) Whoever pollutes the environment should be punished. 不论谁污染环境都应该受到惩罚。(关联词是缩合连接代词whoever) Wherever you are is my home—my only home. 你所在的任何地方就是我的家——我唯一的家。(关联词是缩合连接副词wherever) 有时可以用it作为形式主语，将真实主语从句置于句末。如： 1. It is probable that the nocturnal trades go way back in the ancestry of all mammals. 很可能这种夜间的谋生可以追溯至所有哺乳动物的祖先。 2. It should be no surprise then that among mathematicians and architects, left-handers tend to be more common and there are more left-handed males than females. 在数学家和建筑学家中，左撇子更常见并且左撇子的男性比女性要多，这并不惊奇。 3. It is reported that millions of people die of water-related disease each year. 据报道每年有成千上百万人死于和水有关的疾病。 雅思阅读考试--表语从句 在复合句中用作表语的从句称为表语从句(predictive clause)。引导表语从句的关联词有疑问代词、疑问副词、缩合连接代词、从属连词等。如： The problem is who they can rely on. 问题是他们能依赖谁呢。(关联词是疑问代词who) The question is how they have achieved this. 问题是他们是如何完成的。(关联词是疑问副词how) He looked just as he had looked ten years before. 他看起来还和十年前一样。(关联词是从属连词as)
主语从句专练 I. 用适当的词填空，使句子意思完整。 1. ______ he didn’t attend the meeting yesterday wasn’t quite clear. 2. ______ team will win the match is still unknown. 3. ______ comes to the party will receive a present. 4. ______ Mary has left is still a question. 5. It’s reported ______ three people were killed in the accident and five were hurt badly. 6. ______ he solved the problem successfully interested all of us. 7. We usually think ______ we can’t get seems better than what we have. 8. It is a fact ______ English is being accepted as an international language. 9. ______ is to be sent there to solve the problem hasn’t been decided. II. 下列各句中均有一处错误，请改正。 1. That the old man’s son wanted to know was where the gold had been hidden. 2. It is reported when China has successfully sent Shenzhou VI spaceship into space. 3. If he can finish his task on time is of great importance. 4. Whether the 2008 Olympic Games will be held in Beijing excited the whole nation. 5. Whatever leaves the room last ought to turn off the lights. 6. Why they will solve the serious problem today has not been decided. 7. When will win the English competition is still a problem. 8. How our spring sports meet will be held or not this week is not known yet. 9. It’s strange when he should have gone away without telling us. III. 选择题 1.________ makes mistakes must correct them. A. What B. That C. Whoever D. Whatever 2. It worried her a bit ____ her hair was turning grey.
同位语从句和定语从句的三点区别 同位语从句和定语从句很相似,但还是有区别的,主要在以下三方面: 1.从词类上区别 同位语从句前面的名词只能是idea,fact,news,hope,belief,suggestion,proposal,word,thought,doubt,truth, possibility,promise,order等名词?而定语从句的先行词可以是名词?代词?主句的一部分或是整个主句? The possibility that the majority of the labor force will work at home is often discussed. (同位语从句) We are not looking into the question whether he is worth trusting. (同位语从句) Word came that he had been abroad. (同位语从句) Our team has won the game, which made us very happy. (定语从句) The doctor whom you are looking for is in the room. (定语从句) His mother did all she could to help him with his study. (定语从句,代词all作先行词?) 2.从性质上区别 定语从句是从句对其先行词的修饰或限制,属于形容词性从句的范畴;而同位语从句是从句对前面抽象名词的进一步的说明和解释,属于名词性从句的范畴? The news that our team has won the game was true. (同位语从句,补充说明news到底是一个什么消息?) The news that he told me yesterday was true. (定语从句,news在从句中作told的宾语?) I made a promise that if anyone set me free I would make him very rich. (同位语从句,补充说明promise到底是一个什么诺言?)