定语从句属于名词性从句吗?为什么?名词性从句都包括什么?

名词性从句和定语从句有什么区别？~

名词性从句包括宾语从句，表语从句，同位语从句，主语从句。定语从句不属于名词性从句。


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，多由连词that，wh-疑问词或由what，whatever等关系代词引导。

1.主语从句

1)主语从句在句子中充当主语，句子的谓语动词用第三人称单数。如：

What is happening outside does not concern us.外面发生的事与我们无关。

2)主语从句前的that不能省略，仅起连接作用，有时为了保持句子平衡，that从句后置，而由it作形式主语。如：

It is estimated that a round-trip to Mars would take more than a year.据估计，飞到火星来回的时间要超过一年。

2.宾语从句在句子中充当宾语。如：

I don't know where the sound came from.我不知道声音是从哪里来的。

Don't be satisfied with what you have achieved.不要满足于你已取得的成绩。

3.当从句放在系动词be，look，remain，seem等后，即构成表语从句。如：

The trouble is that I have lost his address.麻烦的是我弄丢了他的地址。

It seems that as if it is going to snow.看起来天要下雪了。

4.同位语从句

1)同位语从句是对与之同位的名词中心词作进一步解释。能接同位语从句的常见名词有：idea, fact, news, belief, hope, evidence, opinion, problem, truth, answer, proposal, theory, decision, discovery, problem, thought, certainty, likelihood, on condition that, on the ground, with the exception, in spite of the fact, on the pretence等。

The news that he has passed the examination is exciting.他通过考试的消息令人振奋。

I lent her the book on condition that she would return it before Sunday.我把书借给了她，条件是她在星期天之前还给我。

2)同位语从句与定语从句的区别在于：定语从句是对先行词加以修饰、限制，而同位语从句是为了说明中心词的具体内容；that在定语从句中充当成分，为关系代词，而在同位语从句中不作任何成分，仅起连词作用。如：

The fact that we talked about is very important.我们讨论的情况非常重要。(定语从句)

The fact that he succeeded in the experiment pleased everybody.他实验成功的事实使每个人都很高兴。(同位语从句)

5. whether与if在名词性从句中的区别。

if一般只用于引导宾语从句，而whether可引导包括宾语从句在内的其他名词性从句。

1)连词whether引导的主语从句、表语从句不能用if来替换。

Whether he will attend the meeting is uncertain.他是否来参加会议并不确定。

2)宾语从句中，whether常与or not搭配，可以说whether or not，而不说if or not。

I don't care whether or not she will attend the meeting.她是否来参加会议，我不介意。

3)whether可用在介词后，或不定式前，if则不可。

She doesn't know whether to get married now or wait.她不知道是现在结婚呢还是等等。

4)在某些动词后面(如discuss)只能用whether,不用if。

We discussed whether we should go on climbing.我们讨论了是否继续攀登。

最关键的一点：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，这些从句分别在整个句子中作主语、宾语、表语和同位语。而定语从句在整个句子中作定语，起修饰作用。

具体用法如下：

名词从句
名词从句有四类：宾语从句、主语从句、表语从句、同位语从句。例如：
宾语从句：I don’t know where he will go.
主语从句：Where he will go is unknown.
表语从句：The problem is how we can get so much money.
同位语从句：We all feel sorry about the news that he failed in the game.
下面几点是学习名词从句要加以注意的：
1． whether和if都可以引导宾语从句表达“是否”意，（即引导宾语从句时if和whether
可以互换）但以下几种名词从句要用whether（不用if）引导：
（1） 引导主语从句，且在句首时。例：Whether he has won the tennis is not known.(但 It is not known whether/if he has won the tennis).
（2） 引导表语从句时。例The problem is whether he can get a job.
（3） 引导同位语从句时。例：I have no idea whether he will come.
（4） 介词后的whether从句。例：I worry about whether I hurt her feelings.
2． 位于句首引导主语从句的that不可忘。
例如：That he got the first place in the competition surprised all of us.
3． 在“It is suggested/proposed/ordered/a pity/no wonder/necessary/strange/…＋
that从句”结构中，that从句谓语有时用（should）do这样的虚拟语气形式。
例如：It is suggested that we(should) improve the relations between us.
It is a pity that one(should) stay in one place all one′s life.
It is strange that she should have failed to see her own shortcomings（缺点）.
4． 在“The reason why…is that…”句式中that不要误为because.
例如：The reason why he didn′t go to school yesterday is that he was ill.
5． 名词从句中that,what用法比较：
引导名词从句的that是连词，在句中无成份，无意义，而what是连接代词，what＝the thing(s) that.
例如：It was told in yesterday′s newspaper that what the students had done was praised by the factory.
I know that he will study.
I know what he will study.
That he works hard at his lessons is known to us all.
What he works hard at is known to us all.
All I ask is that you should tell the truth./He is not what(＝the person that)he
used to be.他和以前大不相同了。
6． where在名词从句中的使用特点：
where在名词从句中有时可以变为“the place where”,有时可以变为“介词＋the place where” 形式。例如：
主从：Where(＝The place where)she has gone is still unknown.
宾从：Would you please tell me where(＝the place where) Mr Smith lives?
表从：Your dictionary remains where(＝in/at the place where)you put.
同位从：Have you any idea where(＝of the place where) she is spending her holidays?
7． 无论是哪种名词从句都是陈述语序。例如：
I know where he lives./Please tell me what her name is.
当一个特殊疑问句本身就是陈述语序（即“主＋谓＋（宾）”或“主＋系＋表”结构），将其变为间接引语（即宾语从句）时，无需改变语序。例如：
What′s the matter with him? She asked me what was the matter with him.
Who looks after your grandfather? He asked me who looked after my grandfather. ===========================================================================
定语从句

一、 定语从句与引导词
定语从句是在复合句中修饰某一名词或代词的从句。被修饰的名词或代词叫做选行词，
而引导定语从句的词叫引导词，有关系代词和关系副词两类。
懂得什么样的先行词后用什么样的引导词是学好定语从句的关键。
1． 关系代词有：that,which,who,whom,whose,在定语从句中作主语、宾语中表语，whose 作定语。代人的有：who,whom,whose,that；代物的有：that,which,whose.例如：
The man who helped you is Mr White.(who代人，在定语从句中作主语)
That is the person(whom/who/that) you want to see.(whom,who,that代人，在定语从句中作宾语，可省略)
I′m not the fool(that) you thought me to be.(that代人，在定从中作表语)
A dictionary is a useful book which(＝that) tells us the meaning of words(which或that代物，在定从中作主语)
2． 关系副词有：when(指时间)，where(指地点),why(指原因)，在定语从句中作状语。
例如：Would you suggest a time(when) we can have a talk?(when可省略)
The house where they live is not very large./This is the reason why he did not came to the meeting.
注意：不是表时间的先行词都用when引导定从，不是表地点的先行词都用where引导定从。例如：We′ll visit the factory which(＝that) makes radios.
(which或that在定从中作主语，where不可用主语，故不可用)
They still remember the happy days(which/that) they spent in Beidaihe.
(which或that在定从中作spent的宾语，when不可作宾语，故不可用)

二、限制性定语从句与非限制性定语从句
限制性定语从句和主句之间不用逗号分开，修饰主句中的某一个名词或名词词组或代
词；非限制性定语从句常用逗号和主句隔开，可以修饰主句中的某一个词，也可修饰整个句子。非限制性定语从句不能用that引导，引导非限制性定语从句的关系词不能省略。非限制性定语从句例：Li Ping′s father, who works in a factory, is an engineer./He tore up my photo, which made me very angry.(which指代主句内容，因前后两句是因果关系，此时which不可换为as。)
He is good at physics, as is known to us all.＝As is known to us all, he is good at physics.(as指代主句内容，在as is known/believed, as we all know/believe这类结构中as不可换为which)

三、 只用that引导和不用that引导的场合
1． 只用that引导的场合
1） 当先行词既包括人又包括物时：He talked about the men and the books that attracted him.
2） 指物的先行词被any, every, only, very, all, no等修饰时：These are the very points that interest me./That′s the only watch that I like most.
3） 指物的先行词被序数词或形容词最高级修饰时：The first step that we are to take is very difficult./This is the second card that he gave me.
4） 先行词是指物的不定代词all,little,few,much,及everything,anything,nothing等时：There is still much that can be done about it./Have you got everything that you need?
5） 先行词是who时：Who that have seen him does not like him?
2． 不用that的场合如下：
1）非限制性定语从句中 Last night ,I saw a very good film,which was about the Long
March .
2）介词放在关系代词之前时 This is the man from whom I learnt the news
3）句中出现了that，或先行词是that时 I have found that which I was looking for.

四、“介词＋关系代词”用法
1． 介词的确定应依据定语从句中短语的习惯性搭配，例如：Who is the girl with whom you just shook hands?(shake hands with…是习惯性搭配)
2． 介词常受先行词的制约（即介词和先行词的搭配），例如：He built a telescope through which he could study the skies.(through which 即through the telescope)
3． 当关系代词作“动词＋介词”固定短语的宾语时，此时因定短语中的介词不能拆开移到关系代词前。例如：This is the watch which you′re looking for./He is a kind of man whom you can safely depend on.

五、几个名词后的引导词
1. situation后常用where,in which引导定语从句：Can you imagine a situation where/in
which you can use the word?
2. way(方式，方法)后常用in which或that或how引导定语从句，也可省略：Do you know the way(in which/that/how) he worked out the problem?
3. “the same＋名词”，“such＋名词”，“as＋名词”后通常用as引导定语从句。
例如：I have the same dictionary as you(have)./Such a book as you bought is not worth buying.

定语从句不属于名词性从句。在句子中起名词作用的句子叫名词从句，它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，而定语从句是由关系代词和关系副词引导的从句。

名词性从句、状语从句和定语从句都是复合句。名词性从句在句中相当于一个名词的作用。在句中名词性从句主要有主语从句、表语从句、宾语从句和同位语从句。

状语从句则是对前一个单句中的动词、形容词或副词作修饰的从句；定语从句有限制性定语从句和非限制性定语从句，限制性定语从句是对前面的先行词（通常情况下是一些名词）进行修饰的从句，非限制定语从句则是对前面的整个从句作补充说面的从句。

举例说明

名词从句：whoever came here is welcome.（无论谁到位这里都）很受欢迎。

因为没有这样的词有这样的意思，那这个句子whoever came here就相当一个名词做了句子的主语。类推代替宾语的，就是宾从代替主语的就是主从，代替表语的就是表语，代替同位的就是同位语从句。

定语从句属于形容词性从句
名词性从句包括主语从句,表语从句,同位语从句和宾语从句
此句是主语从句

定语从句属于形容词性从句，是用来修饰名词或者代词的，起形容词性的作用

名词性从句包括：宾语从句，主语从句 同位语从句，表语从句。

When we will go is not decided ?这个属于主语从句，when will go 整个句子做主语，属于名词性从句。

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蛟河市18475833657： 定语从句属于名词性从句吗?为什么?名词性从句都包括什么? - ？
蓝会舒筋： 定语从句属于形容词性从句 名词性从句包括主语从句,表语从句,同位语从句和宾语从句 此句是主语从句

蛟河市18475833657： 名词性从句和定语从句的区别是什么我分不清 - ？
蓝会舒筋：[答案] 名词性从句包括宾语从句,表语从句,同位语从句,主语从句.定语从句不属于名词性从句. 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,多由连词that,wh-疑问词或由what,whatever等关系代词引导. 1.主语从句 1)主语从句在句子...

蛟河市18475833657： 名词性从句和定语从句的判别标准是什么怎样区分 - ？
蓝会舒筋： 我觉得,你只要能够辨认出定从,那么名从的特征就不给你说了. 首先,你一定要弄清楚定语从句的本质.定语,就是修饰别的单词的成分,最简单的定语就是你在课本后面单词表里看到的译为“……的”的形容词(当然不是所有这些词都能作...

蛟河市18475833657： 如何区别名词性从句和定语从句? - ？
蓝会舒筋：[答案] 名词性从句包含:主语从句,宾语从句,表语从句,同位语从句.从句中的that只起引导作用,没有意义,也不做任何成分.宾语从句中常省略.whether、if引导名词性从句起引导作用,还有意义“是否”的意思,但不充当成分;不能引导定语从句.疑问...

蛟河市18475833657： 名词性从句是什么样的从句,和状语、定语从句有什么关系和区别? - ？
蓝会舒筋： 名词性从句就是整体作为名词来看的,一般做主语,宾语,如What has happened makes us sad.what has happened 就是名词性从句做句子主语.I know what you said.what you said 就是名词性从句做句子宾语. 定语从句就是用来做定语,起修饰作用,如The man whom you met yesterday is our teacher.whom you met yesterday 就是定语从句修饰man. 状语从句分为很多种,分为原因状语从句,时间状语从句,地点状语从句等等. When I was 6, my mother left me.就是时间状语从句.

蛟河市18475833657： 定语从句,名词性从句,宾语从句 同位语从句的区别是什么 - ？
蓝会舒筋：[答案] 定语从句是指从句整个作后置定语,即一个句子相当于一个形容词.而宾语从句和同位语从句还有主语从句,表语从句统称为名词性从句,因为这些从句都相当于名词所充当的成分.顾名思义,宾语从句就是一个句子整个充当另外一个...

蛟河市18475833657： 定语从句与名词性从句的区别 - ？
蓝会舒筋：[答案] 首先你要分清句子的基本成分:主谓宾状语是修饰谓语的,定语修饰主语或宾语当一个词修饰不了主、宾的时候,我们就用一个句子来修饰它们呢,这个就是定语从句.也就是整个句子都作定语.而名词性从句,是整个句子充当了主语...

蛟河市18475833657： 名词性从句与定语从句的区别 - ？
蓝会舒筋： 最大的区别就是,名词性从句本身就是名词性的,而定语从句是修饰性的,定语从句如果从句中去掉的话,剩下的部分依然是一个结构完整的句子.

蛟河市18475833657： 名词性从句和定语从句的区别是什么 - ？
蓝会舒筋： 名词性从句,顾名思义,就是这个从句可以当名词来用或者说是起到了名词的作用;而定语从句就是对一个名词成分进行限定的句子成分,它一般起到一个形容词所具有的限定作用.宾语从句、主语从句和同位语从句都属于名词性从句.

蛟河市18475833657： 定语从句是不是名词性从句之一?？
蓝会舒筋： 不是的,它是形容词性从句.