求英语定语从句中as的用法.请客观、准确地叙述.

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求英语定语从句中as的用法.请客观、准确地叙述.求英语定语从句中as的用法.请客观、准确地叙述.求英语定语从句中as的用法.请客观、准确地叙述.定语从句(AttributiveClauses)在句中做

求英语定语从句中as的用法.请客观、准确地叙述.
求英语定语从句中as的用法.
请客观、准确地叙述.

求英语定语从句中as的用法.请客观、准确地叙述.
定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词.定语从句通常出现在先行词之后,由关系词(关系代词或关系副词)引出.
关系代词有:who,whom,whose,that,which等.
关系副词有:when,where,why等.18.1 关系代词引导的定语从句
关系代词所代替的先行词是人或物的名词或代词,并在句中充当主语、宾语、定语等成分.关系代词在定语从句中作主语时,从句谓语动词的人称和数要和先行词保持一致.
1)who,whom,that
这些词代替的先行词是人的名词或代词,在从句中所起作用如下:
Is he the man who/that wants to see you?
他就是你想见的人吗?(who/that在从句中作主语)
He is the man whom/ that I saw yesterday.
他就是我昨天见的那个人.(whom/that在从句中作宾语)
2) Whose 用来指人或物,(只用作定语,若指物,它还可以同of which互换),例如:
They rushed over to help the man whose car had broken down.那人车坏了,大家都跑过去帮忙.
Please pass me the book whose (of which) cover is green.请递给我那本绿皮的书.
3)which,that
它们所代替的先行词是事物的名词或代词,在从句中可作主语、宾语等,例如:
A prosperity which / that had never been seen before appears in the countryside.农村出现了前所未有的繁荣.(which / that在句中作宾语)
The package (which / that) you are carrying is about to come unwrapped.你拿的包快散了.(which / that在句中作宾语 18.2 关系副词引导的定语从句
关系副词可代替的先行词是时间、地点或理由的名词,在从句中作状语.
1)when,where,why
关系副词when,where,why的含义相当于"介词+ which"结构,因此常常和"介词+ which"结构交替使用,例如:
There are occasions when (on which) one must yield.任何人都有不得不屈服的时候.
Beijing is the place where (in which) I was born.北京是我的出生地.
Is this the reason why (for which) he refused our offer?这就是他拒绝我们帮助他的理由吗?
2)that代替关系副词
that可以用于表示时间、地点、方式、理由的名词后取代when,where,why和"介词+ which"引导的定语从句,在口语中that常被省略,例如:
His father died the year (that / when / in which) he was born.他父亲在他出生那年逝世了.
He is unlikely to find the place (that / where / in which) he lived forty years ago.他不大可能找到他四十年前居住过的地方.
用关系代词,还是关系副词完全取决于从句中的谓语动词.及物动词后面无宾语,就必须要求用关系代词;而不及物动词则要求用关系副词.例如:
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
一、 限定性定语从句
1.that即可代表事物也可代表人,which代表事物;它们在从句中作主语或宾语,that在从句中作宾语时常可省略关系词,which在从句中作宾语则不能省略.而且,如果which在从句中作“不及物动词+介词”的介词的宾语,注意介词不要丢掉,而且介词总是放在关系代词which的前边,但有的则放在它原来的位置
2.which作宾语时,根据先行词与定语从句之间的语义关系,先行词与which之间的介词不能丢
3.代表物时多用which,但在带有下列词的句子中用that而不用which,这些词包括all,anything,much等,这时的that常被省略(见本节“四、关系代词的省略”)
4.who和whom引导的从句用来修饰人,分别作从句中的主语和宾语,whom作宾语时,要注意它可以作动词的宾语也可以作介词的宾语
5.where是关系副词,用来表示地点的定语从句
6.when引导定语从句表示时间
〔注〕 值得一提的是,表示时间“time”一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导
7.whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格
8.当从句的逻辑主语是some,any,no,somebody,anybody,nobody,something,anything,everything或nothing时,常用there is来引导
二、非限定性定语从句:非限定性定语从句的作用是对所修饰的成分作进一步说明,通常和主句间用逗号隔开,将从句拿掉后其他部分仍可成立
1.which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分
2.在引导限定性定语从句时,that有时相当于in which,at which,for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed.人们对白日做梦的态度正在改变,这与人们对夜间做梦的看法的变化有非常相似之处.
I like the music for the very reason that(for which) he dislike it.我出于某种原因喜欢这种音乐,而他恰恰与我相反.
We arrived the day that(on which) they left.刚好我们到的那天他们走了.
3.有时as也可用作关系代词
4.在非限定性定语从句中,不能用that,而用who,whom代表人,用which代表事物
三、定语从句结构错误
1.缺关系词
2.从句中缺成分
四、连接代词的省略

关系代词as引导的定语从句,一般在句子中作主语、宾语或表语:
1.引导限制性定语从句,常用于以下句式:
(1).such+n.+as+…像……一样的,像……之类
(2).the same+n+as…和……同样的
eg.We have found such materials as are used in their factory.[as作主 语]
(3)....

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关系代词as引导的定语从句,一般在句子中作主语、宾语或表语:
1.引导限制性定语从句,常用于以下句式:
(1).such+n.+as+…像……一样的,像……之类
(2).the same+n+as…和……同样的
eg.We have found such materials as are used in their factory.[as作主 语]
(3).…such as…
such 为代词,意为“这样的人或物”,as在从句中担当成分,修饰先行词such.
eg.This book is not such as I expect.
2.当非限制性定语从句放在主句前面时,只能用as.
eg.As it is known to everybody,the moon travels round the earth once every month.
注意:定语从句中关系代词as/which的区别:
as引导的非限制性定语从句,既可在主句前,又可在主句后,有时还是插入主句中的,which引导的非限制性定语从句只能置于主句之后。

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adv.
同样地, 被看作, 象
prep.
当做
conj.
与...一样, 当...之时, 象, 因为