as...as的用法（精选）.doc

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 。
(2)Your pen writes as smoothly as 。
其否定式为not as/so +adj./ adv. +as。例如:
This dictionary is not as/so useful as you 。
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 。
几个关于as...as的常见句型:
(1)as...as possible
Please answer my question as soon as 。
(2)as...as usual/before
She looks as pretty as 。
(3)as long as... (引导条件状语从句)
It took us as long as three years to carry out the 。
(4)as far as
He walked as far as the railway station yesterday ,他一直散步到火车站。
(5)as well as
She cooks as well as her mother 。
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
一、“as(否定句中可用so)+adj./adv.+as…”,其基本意思为“……和……一样”。但在实际应用中,此结构在不同的语境中含义差异较大。
1、表示不同人或物同一性质的比较,意为“……和……一样……"。
The tree is as tall as the building(is).
这棵树和那栋楼一样高。
Michael is as bright as e(is).
迈克尔和乔治一样聪明。
2、表示同一个人或物不同性质的比较,意为“既……又……”
Alice works as happily as(she)plays(happily).
艾丽丝愉快地工作,尽情地玩。
Danny is not so wise as he is witty.
丹尼为人风趣,但欠