- used in comparisons to refer to the extent or degree of something用于范围或程度的比较 如同, 如：
hailstones as big as tennis balls
网球般大小的冰雹
it tasted like grape juice but not as sweet.
这尝起来像葡萄汁, 却不及葡萄汁甜。
- used to emphasize an amount［用于强调数量］多达：
as many as twenty-two rare species may be at risk.
多达22种稀有物种可能处于濒危状态。
- used to indicate that something happens during the time when something else is taking place用于表示在一件事情发生的同时另一件事情发生了 当：
Frank watched him as he ambled through the crowd
当他在人群中漫步时, 弗兰克注视着他
as she grew older, she kept more to herself.
随着年龄的增长, 她变得更沉默了。
- used to indicate by comparison the way that something happens or is done［用于通过比较来表示某事发生或完成的方式］以…的方式, 如同…那样：
dress as you would if you were having guests
你该穿得像是家里来了客人那样
they can do as they wish
他们能随心所欲
she kissed him goodbye, as usual.
她同平常一样和他吻别。
- used to add or interject a comment relating to the statement of a fact用于在陈述中增加或插入评论 正如…：
as you can see, I didn't go after all.
你看, 我毕竟没有去。
- because; since因为; 既然：
I must stop now as I have to go out.
我得就此打住了, 因为我得出去。
- even though尽管, 虽然：
sweet as he is, he doesn't pay his bills
他虽然和蔼可亲, 却不买账
try as he might, he failed to pull it off.
虽然他一试再试, 却没有成功。
- used to refer to the function or character that someone or something has用于某人或某物的功用或特点 作为, 以…的身份：
it came as a shock
这事突如其来, 叫人震惊
as prime minister, he is a target for terrorism.
作为首相, 他是恐怖主义的目标。
- during the time of being (the thing specified)当…时：
he had often been ill as a child.
他小时候经常生病。
as and when
- at the time when (used to refer to an uncertain future event)用于指不确定的未来之事当：
they deal with an issue as and when it rears its head.
事到临头他们才会开始处理。
as for
- with regard to至于, 关于：
as for you, you'd better be quick.
至于你, 最好快点。
as from （或of）
- chiefly Brit. used to indicate the time or date from which something starts〈主英〉［用于指某事开始之时或开始的日期］ 从：
as from 1 January, a free market will be created
从1月1号开始, 一个自由市场将建成
I'm on the dole as from now.
从现在开始我就要吃救济了。
as if（或though）
- as would be the case if好像, 似乎, 仿佛：
she behaved as if he wasn't there.
她表现得好像他根本不在场似的。
as if!
- informal I very much doubt it〈非正式〉我很怀疑！：
You know how pools winners always say it won't change their lives?Yeah, as if.
你知道那些足球赛赌博的赢家们总是说赢了钱还是改变不了他们的生活吗？当然知道, 可我才不信呢。
as (it) is
- in the existing circumstances在目前情况下, 按现在情况来看：
I've got enough on my plate as it is.
眼下我要做的事情已够多的了。
as it were
- in a way (used to be less precise)用于表示不够确切的情况也许可以这么说, 在某种程度上：
areas which have been, as it were, pushed aside.
在某种程度上说已被搁置起来的领域。
as long as
- 见LONG1.
as much
- 见MUCH.
as of
- 见前面as from.
as per
- 见PER.
as such
- 见SUCH.
as though
- 见前面 as if.
as to
- with respect to; concerning关于; 在…方面：
decisions as to which patients receive treatment.
关于哪些病人该接受治疗的决定。
as well
- 见WELL1.
as yet
- usu. with negative until now or a particular time in the past直到现在; 从过去某一时间：
the damage is as yet undetermined.
损失到目前还未确定。
as you do
- Brit. used as an ironic comment on a previous statement〈英〉［用于对自己刚说过的意思表示具有讽刺意味的看法］真不容易啊; 真不简单啊：
She only acts part-time now: she prefers helping out with her hubby's real estate business. As you do.
她现在只是兼职演出：她喜欢帮她老公做房地产生意。真是不简单啊。