詞彙精選：as的用法和辨析
一、詳細釋義：
adv.
同樣地；和…一樣地
例句：
He runs as fast as Paul.
他跑得和保羅一樣快。
例句：
Smith works as hard as you used to.
史密斯和你從前一樣工作努力。
例如
例句：
These poems were written by poets as by keats and shelly.
這些詩篇是詩人例如濟慈和雪萊寫的。
例句：
Preserve in a pickling liquid, as of vegetables.
在有酸性的液體中保存食物，例如蔬菜。
conj.
當…時；在…的同時
例句：
I was coming in as he was going out.
我進來的時候，他正出去。
例句：
As I was coming here, I met your brother.
我來這兒的時候遇見了你哥哥。
因爲，由於
例句：
As this question is of great interest, we will discuss it once again.
因爲這個問題很有意義，所以我們決定再討論一次。
例句：
As rain has fallen, the air is cooler.
由於下了雨，空氣比較涼爽。
如同，像…一樣
例句：
Things were almost as they had been before.
事情還如同以前一樣。
例句：
I'm lost as a light is lost in light.
我如同燈盞迷失在光明裏。
儘管，雖然
例句：
Intelligent as you are, I suspect you will fail.
儘管你聰明，我還是猜想你會失敗。
例句：
Child as is Paul, he knows enough to tell good from bad.
保爾雖是個孩子，卻已懂得區分好壞。
隨着
例句：
The search intensified as dusk approached.
隨着黃昏將至，搜尋加強了。
例句：
We get wiser as we get older.
我們隨着年齡的增長變得更聰明。
依照
例句：
You should do as the law prescribes.
你應該按照法律的規定做。
例句：
Let it be as you desire.
就按照你的意思辦吧。
prep.
如同
例句：
He does this job as a skilled labour.
他做起這個活如同個熟手。
例句：
We talked about such subjects as the weather.
我們談論了諸如天氣之類的話題。
當作，作爲，以…的身份
例句：
He worked as a cashier in a bank.
他在一家銀行幹過出納。
例句：
Don't regard me as a child.
別把我當成小孩看待。
二、詞義辨析：
though,although,as
這些連詞均可表示“雖然，儘管”之意。though和although在意義上幾乎毫無區別，但文體上後者是較正式用詞，語氣比though強。此外，在習慣用法上這兩個詞仍有以下一些差異：gh可引出倒裝語序的讓步狀語從句，although 則不能。gh可與even連用，although則不能；在as though結構中，只用though，不能用although。gh可以置於從句末，而although則不能。4.引出省略句時，通常用though。as引出讓步狀語從句只用於倒裝語序結構中，語氣強於上述兩個連詞。
三、詞義辨析：
as,because,for,since
這些連詞均含有“因爲”之意。as從屬連詞，語意較because,since弱，着重在主句，所表示的原因或理由是“附帶的”。because從屬連詞，語意強，着重直接的原因或理由，所引出的從句是全句的重心，用以回答why提出的問題。for並列連詞，語氣較弱，所引出的句子一般放在後面，表示附帶說明的理由或推斷理由。since語意比because弱，但比as強，一般用於表示“由於大家已知的事實”。
四、詞義辨析：
when,while,as
這些連詞均可表示“當……時”引出時間從句。when所引導的從句，其謂語動詞既可是持續動詞，也可是短暫動詞；謂語動詞動作發生的時間可以與主句謂語動詞的動作是同時，或之前、之後。 while句中的謂語動詞應爲持續動詞，不用短暫動詞，謂語動作發生的時間通常與主句謂語動詞動作發生時間是同時。as側重指從句與主句的動作同時進行，謂語動詞可以是持續性的，可以是短暫性動詞。
一、相關短語：
act as
v.1.擔當…；起…的作用
as a matter of fact
ad.1.事實上，其實
as an alternative
as an alternative to sth/doing sth 作爲...的替換
as far as possible
儘可能…
as follows
adv.如下
as if by magic
adv.不可思議地
as it is
事實上,實際上,既然如此,像現在這樣
as it were
可以說,可謂;似乎
as luck would have it
碰巧；幸運地
as such
ad.1.依其身份、資格或名義等；本身
as the crow flies
成直線地,走捷徑地
as usual
像平常一樣,照常,照例
一、參考例句：
as stiff as a poker
像火鉗一樣僵硬
Not as good as you.
沒你感覺那幺好。
Become as independent as possible.
儘量自立。
He is as gruff as a bear.
他粗暴得像一隻熊。
You're as tall as your father.
你和你父親一樣高。
She is as motionless as a statue.
她像一尊塑像一樣紋絲不動。
He was as brave as a lion.
他勇猛如雄獅。
The water was as smooth as glass.
水平如鏡。
Her skin was as smooth as silk.
她皮膚像絲綢一樣光滑。
This material is as tough as leather.
這料子像皮革般堅韌。
