as .as .的用法RT

as .as .的用法RT
as .as .的用法
RT

as .as .的用法RT
as可以作连词、介词及关系代词.现将其用法小结如下:
一、 as作连词的用法:
1.作"当……的时候",引导时间状语从句.注意与when、 while的用法区别.
① when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间.如:
When he was at college,he could speak several foreign languages.
When the clock struck twelve,all the lights in the street went out.
② while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生.如:
Work while you work.Play while you play.
③ 但属下列情形时,只用as,而不用when或while.
A) 用于表示同一个人的两种动作交替进行,指"一边……,一边……".如:
The girl dances as she sings on the stage.
He looked behind from time to time as he went forward.
B)表示两个同步发展的动作或行为,译为"随着……".如:
As time went on / by,she became more and more worried.
As children get older,they become more and more interested in the things around them.
C)表示两个短促行为或事件几乎同时发生.如:
I thought of it just as you opened your mouth.
Just as the flying worm hit her face,she gave a loud cry.
D) 后接名词表示某一年龄段时,用as.如:
As a young man,he was active in sports.
2.as=since,作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由.如:
As / Since you're not feeling well,you may stay at home.
As he wasn't ready in time,we went without him.
3.as=in the way that,作"像"、"按照……的方式"解,引导方式状语从句.如:
He speaks English as Americans do.
Remember,you must do everything as I do.
4.用于as...as...或not so/ as...as...中,前一个as是副词,后一个as是连词,引导比较状语从句.如:
They helped the old man as often as possible.
I don't speak English so/ as well as he does.
5.作"虽然"、"尽管"解,引导让步状语从句.常用倒装语序,即adj./adv./ n.+ as +主语+谓语+主句.如:
Tired as they were,they walked on.
Child as he is,he knows a lot.(child前不用冠词)
二、 as作关系代词,引导定语从句,作"正如"、"这一点"解.如:
He is very careful,as his work shows.
As is well-known,Taiwan belongs to China.
as的这种用法,请看2001年的高考题:
is known to everybody,the moon travels round the earth once every month.
A.It B.As C.That D.What
字母下划横线的为正确答案)
另外,当先行词被the same,such等词修饰时,常用as来引导定语从句.如:
Such a clever boy as he can learn anything quickly.
I was reading the same book as he bought yesterday.
三、 as作介词的用法:
as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语.如:
As a League member,I'll take the lead in everything.(状语)
She works as a doctor.(状语)
They have me as one of their own children.(引起宾语补足语)

as 形容词as =the same 名词（单）as

一、as作连词的用法
1. as...as的用法
as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes...

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一、as作连词的用法
1. as...as的用法
as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
其否定式为not as/so +adj./ adv. +as。例如：
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。例如：
Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
几个关于as...as的常见句型：
(1)as...as possible
Please answer my question as soon as possible.请尽快回答我的问题。
(2)as...as usual/before
She looks as pretty as before.她看起来和以前一样漂亮。
(3)as long as... (引导条件状语从句)
It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。
(4)as far as
He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火车站。
(5)as well as
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
一些带有as...as结构的常见短语归纳：
as busy as a bee像蜜蜂一样忙碌
as easy as ABC像ABC一样容易
as deep as a well像井一样深
as light as a feather像羽毛一样轻
as soft as butter像黄油一样软
as rich as a Jew像犹太人一样富裕

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和……一样

USAGE用法：Note the difference between these uses of like and as☆注意like和as用法上的差别：He plays