名词性从句2

名词性从句讲解（2 ）应城市第三高级中学刘琪一．表语从句：在复合句中，位于系动词之后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，表语从句位于系动词后，有时用as if引导。

1.that 引导表语从句，无词义，只起连接作用，不可省。

2.联系动词可为be,look,seem,sound,appear等。

3.主语可为名词fact,truth,cause,question,explanation,trouble,assumption,belief等，代词this,that,these,it等。

4.whether 引导表语从句The fact is that we have lost the game.That’s just what I want.This is where our problem lies.That is why he didn’t come to the meeting.It looks as if it is going to rain.China is not what it used to be.The question is whether the enemy is marching towards us。

【注意】1.当主语是reason时，表语从句要用that引导而不是because。

The reason why he was late was that he missed the train by one minute this morning.2.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。

3.That is why…译为“这就是……的原因”。

其中why引导的名词性从句在句中做表语，该句型通常用于针对前面已经说过的原因进行总结。

That is why you see this woman before you know.That is why I came.区别：①That is why ……与That is the reason why …同义，只不过从语法结构上讲，前者中的why引导表语从句，后者中的why引导定语从句。

高中英语真题:名词性从句一、主语从句1．It＋系动词＋形容词(necessary，right，likely，unlikely，wrong，important，certain，clear，obvious，strange，normal等)＋that从句It is certain that most of the farmers have brought in more mo ney by all means.2．It＋be＋名词(短语)(a pity，a shame，good news，a fact，an honour，a wonder，no wonder等)＋that从句It’s no wonder that you’ve achieved so much success.3．It＋be＋过去分词(said，told，heard，reported，decided，suggested，advised，ordered，remembered，thought，considered，wellknown，announced等)＋that从句It is said that the professor has already succeeded in carrying out the experiment.4．It＋特殊动词(seem，appear，happen，matter)＋that从句It happened to me that I had been away when he called.二、宾语从句1．动词的宾语从句有些动词带宾语从句时习惯上需要在宾语从句前加it。

这类动词(词组)有hate，enjoy，like，love，dislike，see to等。

I hate it when they talk with their mouths full.2．一般情况下介词后只能用wh类连接词引导宾语从句。

We are talking about whether we admit students into our club.注意：(1)where引导的从句有时也可用作介词的宾语。

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。

第一节知识点讲解顾名思义，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。

而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。

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…众所周知……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-从句It appears that…似乎……It happens that…碰巧……It occurred to me that…我突然想起……七、名词性wh-从句1）由wh-词引导的名词从句叫做名词性wh-从句。

Wh-词包括who, whom,. whose, whoever, what, whatever, which, whichever等连接代词和where, when, how, why等连接副词。

Wh-从句的语法功能除了和that-从句一样外，还可充当介词宾语、宾语补语和间接宾语等，例如：主语：How the book will sell depends on its author. 书销售如何取决于作者本人。

直接宾语：In one's own home one can do what one likes. 在自己家里能够随心所欲。

间接宾语：The club will give whoever wins a prize.俱乐部将给得胜者设奖。

表语：My question is who will take over president of the Foundation. 我的问题是谁将接任该基金会主席职位。

LECTURE 2 名词性从句本堂目标：熟悉四种名词从句主语从句特征，重点掌握it结构的主语从句与强调句型的区别、宾语从句中的否定后移、名词从句的嵌套结构等，学会快速分析长难句。

基础预习所谓名词性从句，就是把这个句子当作名词使用，并在句子中充当一定的句子成分。

名词性从句一般可在句子中充当主语、宾语、表语和同位语。

于是我们就有了常说的四种名词性从句：主语从句、表语从句、宾语从句和同位语从句。

名词性从句一律都用陈述语气。

【名词性从句总结表】从句引导词连词关系代词关系副词主语从句that, whether,if(不能放句首) what,whatever,who,whoever,whose,whosever,which,whicheverwhen, whenever, where, wherever, how, however,why表语从句that, whether,because, as, asif, as thoughwhen, where, how, why等宾语从句that, whether,if when, whenever, where, wherever, how, however, why同位语从句that, whether一、主语从句主语从句是指作主语的从句，有三种类型：1．由that引导的主语从句that引导的主语从句是最常见的主语从句，但把that从句放在句首是很少见的，只有为了强调或谓语较长时，that从句才放在句首。

一般而言，that从句都借助形式主语it而放在句子后部分去。

复习主语从句时重点注意形式分类常见结构It be+名词+that 从句It is a pity that…可惜的是…It is a fact that…事实是…It is good news that……真实太好了。

It is no wonder that…难怪…It is common knowledge that……是常识。

名词性从句用法详解来源：小飞自创！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。

复习情态动词1.It is usually warm in my hometown in March, but it _______ be rather cold sometimes.A. mustB. canC. shouldD. would2. -- Who’s the girl standing over there?-- Well, if you _______ know, her name is Mabel.A. mayB. canC. mustD. shall3.I promised to get there before 5 o’clock, but now the rain is pouring down. They _______ for me impatiently.A. may waitB.ought to waitC. could waitD. must be waiting4.The old lady _____ always sit for hour doing nothing, lost in thought.A. willB. wouldC. shouldD. could5.– We need a person badly to think up such an idea.-- _______ the new comer have a try?A. ShallB. MayC. CanD. Need6.Since nobody gave him any help, he ______ have done the research on his own.A. canB. mustC. wouldD. need7.Harry is feeling uncomfortable. He _________ too much at the party last night.A. could drinkB. should drinkC. would have drunkD. must have drunk8.– Why are your eyes so red? You ______ have slept well last night.-- Yeah, I stayed up late writing a report.A. can’tB. mustn’tC. needn’tD. won’t9.–What are you doing this Saturday?-- I’m not sure, but I ______ go to the Rolling Stones concert.A. mustB. wouldC. shouldD. might10.– I left my handbag on the train, but luckily someone gave it to a railway official.-- How unbelievable to get it back! I mean, someone __________ it.A. will have stolenB. might have stolenC. should have stolenD. must have stolen11.-I haven’t got the reference book(参考书) yet, but I’ll have a test on the subject next month.-- Don’t worry. You _______ have it by Friday.A. couldB. shallC. mustD. may12.You ________ have done better, but you didn’t try your best.A. canB. couldC. mustD. need13.It’s not cold today. You __________ have taken the thick sweaters out.A. needn’tB. mustn’tC. couldn’tD. may not14.Mr. White ________ at 8:30 for the meeting, but he didn’t show up.A. should have arrivedB. should arriveC. should be arrivingD. had arrived15.By law, half of Shylock’s property____ go to his daughter upon his death, and the other half to the city of Venice.A. shallB. canC. mustD.need16.He asked me for this book many times. Please tell him he ______ have it tomorrow.A. mustB. shouldC. shallD. would17.–Dad, would you buy me that new bike when my birthday comes?-- I ________, I promise.A. wouldB. shallC. shouldD. will18. Some people these days just _______ go out of their homes to contact the real world.A. mustn’tB. won’tC. mightn’tD. shouldn’t19.– You just think of yourself! You kept me waiting for at least three hours.-- I am sorry that you ________ think so.A. wouldB. couldC. shouldD. might20. Just be patient.You_______expect the world to change so soon.A.can’tB.needn’tC.may notD.will not复习名词性从句语法讲解：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，名词从句又可分为四类：主语从句、宾语从句、表语从句、同位语从句。

LESSON SEVEN名词性从句导言英语从句其实就是三个句型的衍生物。

掌握了三个句型就已经掌握了名词性从句。

名词性从句并不难。

只是在我们过去学过的三种基本句型中出现名词的位置上，根据需要将名词扩大成一个句子，并做小小的改动。

也就是说在一个主系表或主谓宾句型中再套上一个主系表或主谓宾的句子而已。

注意中英文表达上的区别▲由连词that、if、whether 引导的名词性从句主语谓语宾语（宾语从句）每个人都知道地球围着太阳运行。

主语状语谓语宾语（宾语从句）●连词主语谓语状语从上面的例句可以看出，宾语从句只是将宾语扩大成一个句子，并用连词that 引导。

因为that 没有实际意思，通常可以省略。

主语（主语从句）系表语地球围着太阳运行是一条真理。

主语（主语从句）●形式主语系表语主语（主语从句）●It is a truth同样的一个句子，当把它放在主语的位置时，我们便称其为主语从句。

但在英语中为了避免句子头重脚轻，通常将主语从句放在句子的后面，并用it 代替其原先的位置，叫做形式主语。

在这种情况下，连词that 通常不省。

表语（表语从句）●从上面的句子可以看出将一个完整的句子置于表语的位置，便称作表语从句。

主语从句、表语从句以及宾语从句在句子中所占的位置是名词的位置，所以称它们为名词性从句。

由连词if、whether引导的名词性从句也是完整的句子，所不同的是that 在句子中没有实际意思，可以省略，而if、whether因为有是否的意思，故不可省略。

●●I wonder注：whether可加or not而if 不能。

有时我们可以将由whether引导的主语从句放在句首，if则不能。

●---Nelson Rockefeller, American businessman不要忘了，世界上最强大的力量是爱情。

--美国实业家洛克菲勒. N.-------Paul Meyer, French linguist经验证明，大部分时间都是被一分钟一分钟地而不是一小时一小时地浪费掉的。

名词性从句名词性从句一.概念名词性从句共有四种:主语从句,表语从句,宾语从句和同位语从句二.相关知识点精讲1．主语从句：主语从句在整个句子中作主语。

(1)不同于其它的连词，它不充当句子的成分，只是单纯的连接词，通常不可以省略。

分句置于句首时，that绝对不可以省略。

That the driver could not control his war was obvious.It was obvious that the driver could not control his car.(2)if 不能用在主语从句中，而是用whetherWhether he left (or not) is unknown(3)当主语从句作主语时，谓语动词一般用第三人称单数，下面这个句型例外。

What we need is more time and money.What we need are many more books.2.表语从句：表语从句出现在系动词后，充当表语。

The trouble is that we are short of money.Go and get your coat. It’s where you left it.(1) 引导表语从句除了上述三类词外还有because, as if/ as though等等The reason (why/for which…..) is that ……It/This/That is because……(2) 连系动词“appear, look, seem”的两个常用句型It seems/appears that….It looks/seems as if/as though……(与事实相符用陈述语气，与事实相反用虚拟语气) (3) as 也可以引导表语从句Things are not always as they seem to be3. 宾语从句：及物动词，形容词和介词后加宾语从句作其宾语。