ad. 同样地, 例如prep. 做为, 当作conj. 当...之时, 以...的方式, 像...一样, 因为【计】 高级系统, 先进系统, 辅助存储器, 自治系统相关词组: as contrasted with... as follows as long as as mentioned above as much as... as noted above as opposed to... as previously seen as shown in... as soon as conj. as such as the name implies as well as well as A as well as B as firm as a rock as is well known... as for... as is as...so... as yet as it is as it were as if as of... as regards... as to... as in the case with as indicated in... as it was as...as... as indicated above as a consequence as a consequence of... as a result brave as a lion as a result of... as a rule as a whole as seen from without
as单词用法语法
as if虚拟语气的用法
有时用虚拟语气，若表示与现在事实相反，谓语动词用一般过去时;若表示与过去事实相反，用过去完成时;表示将来的可能性不大，用would (might, could)+动词原形。
档源英语学习网要特别提醒同学们，这是一个中考英语中的高频考点，同学们一定要多加注意。
它的常规用法相信同学们都很熟悉，今天小牛英语要跟大家强调两点罕见情况。
(1) 从句所表示的内容若为事实或可能为事实，也可用陈述语气：
It looks as if we'll be late. 我们似乎要迟到了。
This meat tastes as if it has already gone bad. 这肉吃起来似乎已经坏了。
在现代英语中，有时即使从句内容不是事实，也可能用陈述语气：
I feel as if [as though] I'm floating on air. 他感到好像漂浮在空中。
The stuffed dog barked as if it is [were, was] a real one. 玩具狗叫起来像真狗。
单词：as的近义词、反义词、形近词辨析
because/since/as
He didn't go to the meeting because he was ill.他因为生病没有去开会。
Since you have to stay home,why don't you do some shopping?既然你得待在家里，何不（利用这时间）买买东西呢？
As he didn't know much English,he got out his dictionary and looked up the word "cough".由于他英语懂得不多，于是就拿出词典查“咳嗽”这个词。
<辨析>三者是从属连词，引导原因状语从句。because 意为“因为”，它的语气最强，表达主从句间的必然因果关系。因此，回答 why 的问句，必须用 because；能放在“it is ...that...”句型中加以强调的也只能是 because 引导的从句。它所引导的从句一般放在主句后面，需要强调时，也可以放在主句的前面。如：Because he was Aristotle,the great thinker,no one questioned his ideas for almost 2000 years.因为他是亚里斯多德，是一位伟大的思想家，所以差不多2000来，无人对他的看法提出质疑。since 要比 because 的语气稍弱而没有 because 那样正式，表示无须加以说明的原因，这种原因是已知的。常常译作“既然”，所引导的从句多放在主句之前。如：Since you are busy,I'll do it for you.既然你忙，我来替你做吧。as 意为“由于”，“鉴于”，是本组中语气最弱的一个词，它所说明的原因是比较明显的，可能是已经浅露的原因。常用于日常的谈话中，它引导的从句可放在句首或主句之后。如：As it's raining,you'd better stay at home.天在下雨，你最好待在家里。
与单词：as 相关的例句或者名人名言
It was a self-service lunch, so we could take as much food as we wanted.
这是自助午餐，我们可以想吃多少就吃多少。
The children thought of their father as a hero and their mother as a heroine.
小孩子都认为他们的爸爸是英雄、妈妈是女侠。
It's an emergency: get her to the hospital as soon as possible.
情况紧急，尽快送她进医院。
The government saw the introduction of new technology as vital.
政府认为引进新技术至关重要。
As I had a cold, I was in bed yesterday.
我感冒了，所以昨天一直躺在床上。
※Money is not the root of all eviles as is usually claimed, what is the root of all evils is the lust for money, that is the excessive, selfish and greedy pusuit of mnoey.——Nathaniell Hawthorn, American writer 金钱并非像平常说的那样是万恶之源。而对金钱的贪图，既对金钱过分的、自私的、贪婪的追求，才是一切邪恶的根源。美国作家霍桑.N.
※Courage is a virtue only so far as it is directed by prudence. 勇敢只有由审慎指导才能成为美德.
※If you wish to succeed , you should use persistence as your good friend , experience as your reference , prudence as your brother and hope as your sentry. (Thomas Edison , American inventor )——如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。 (美国发明家 爱迪生. T.)
※An honest man's word is as good as his bond. 诚实人的话像他的契约一样靠得住。
