英语 名词性从句 2

【付出就有收获,努力就有进步!】名词性从句一、考点、热点难点句的辨别。

二、典例分析主语从句在主句中起主语作用的从句称为主语从句。

连接主语从句的连接词主要有三类：句尾，但if引导的主语从句只能放在句尾，前面需用it作形式主语。

Whether she is coming or not doesn’t matter too much.It is unknown whether/if he has to my plan.3,由连接代词引导的主语从句：由连接代词who, whom, whose, which, what, whoever, whichever, whatever, whomever 引导的名词性从句中，连接代词在句中充当一定的成分。

What you need is more practice.Whoever comes will be welcome.4,由连接副词引导的主语从句：在连接副词when, where, why, how 引导的名词性从句中，连接副词有含义，在从句中作状语。

Why they suddenly disappeared will remains a mystery.When they will come is still unknown.5..it可代替主语从句置于句首作形式主语，常见的it替代主语从句的句式有：（1）It+系动词+形容词（necessary，right，likely，unlikely，wrong，important，certain，clear，obvious，strange，natural等）+that从句It is certain that most of the farmers have bought in more money by all means.注意：在―It is necessary，important，strange，natural+that从句‖结构中，从句常用―（should+动词原形‖形式。

It is necessary and important that one(should)master the skill of operating computer so as to meet the need of a job.（2）It+be+名词（短语）（a pity，a shame，good news，a fact，an hour，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，well known，announced等）+that从句It is said that the professor has already succeeded in carrying out this experiment.注意：在It+be +suggested，advised ，ordered，requested ，insisted ，required+that从句中应用―(should+动词原形)‖。

It was decided that they (should+) start the project the next month.（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.3.that主语从句的疑问形式和句子的一半疑问形式一样。

Was it decided that they(should)start the project the next month?Did it happen to you that you had been out when he called?宾语从句在句中起宾语作用的从句称为宾语从句。

宾语从句可分为三类：动词的宾语从句、介词的宾语和形容词的宾语从句。

连接宾语从句的连词分为从属连词、连接代词、和连接副词。

从属连词主要有that，whether，if；连接代词有who，whom，whose，what，which，whoever，whomever，whosever，whatever，whichever等；连接副词主要有when，where，why，how，whenever，wherever，however等。

一、动词的宾语从句1.大多数动词（hopetell，say，known，think，consider，imagine，hear，expect，suppose，guess等）可以带宾语从句。

We all expected that they will win,for members of their team are stronger.2.有些―动词+副词‖（find out，point out，work out，turn out）结构也可以带宾语从句。

I have found out that all the tickets for the concert have been sold out.3.有的动词短语（make sure，make up one’s mind，keep in mind）也可带宾语从句。

Make sure that there are no mistakes in your papers before you turn them in.4.动词find，feel，think，consider，make，believe等后有宾语补足语时，则需要用it作形式宾语而将that宾语从句后置。

I think it necessary that we take plenty of boiled water everyday.注意：有些动词带宾语从句习惯上需要在宾语从句前加it。

这类动词有heat，enjoy，like，love，dislike，take，owe，have，see to等。

I heat it when they talk with their mouth full of food.二、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.The book is about how ShenZhou VI manned spaceship was sent up into space. 三、sure，certain，glad，pleased，happy，afraid，surprised，satisfied，sorry等表示情感形容词后也可带宾语从句。

I’m not sure they’ll make it in spite of the terrible weather.表语从句在句中作表语的从句称为表语从句。

能引导宾语从句的连词皆可引导表语从句。

一、表语从句的连接词1.引导表语从句的从属连词有：that和whether。

that和whether在表语从句中不作任何成分，that无实意，但whether有是否的意义。

The question is whether we can reduce the cost of the product.注意：如果主句的主语是idea，advice，suggestion，order，request，requirement 等时，则表语从句的谓语应用虚拟语气，即主语无论是单数或是复数，谓语一律用―（should+）动词原形‖的形式。

My suggestion is that we (should) have a discussion about this matter instead of just laying it aside.如果主语是reason使，表语从句中的连接词要用that，而不用why或because。

The reason for such a serious accident is the driver was too careless and drunk.二、引导表语从句的连接代词主要有who，whom，whose，what，which，whoever，whomever，whosever，whatever，whichever等。

This is what I am interested in.三、引导表语从句的连接副词主要有when，where，why，how，whenever，wherever，however等。

That was where we camped last time.The question is however we can do the work better.四、because，as if，as though，as，like等连接词也可以引导表语从句。

He has heart disease.That is because he has been smoking too much.五、除be以外，可用于表语从句的连系动词有seem，look，appear，sound，taste，feel，remain等。

The question remains whether they will be able to help us.同位语从句同位语从句是用于解释说明某一名词内容的实质的从句，它所修饰的词成为先行词。

同位语从句在主句中的作用等同于先行词的作用。

1.同位语从句常用的引导词有that，whether，why，who，where，how，when等。

if一般不引导同位语从句。

在同位语从句中，that，whether不作成分，whether 表示―是否‖，其它连接词具有实意，同时在同位语从句中作句子成分。

The fact that some countries are still suffing from poverty is really a great problem to the world.The question why so many people would choose to live in the countryside but to work in the city is still under discussion.There is some doubt whether John will come on time.2.同位语从句前常用的名词。