as

A 开头单词专八核心词高考词汇词源字典

音标发音

英式音标 [æz; əz]
美式音标 [æz,əz]
国际音标 [æz]
英式发音
美式发音

基本解释

adv. 如同，像……一样
prep. 作为；以……身份；当作；像，如同；当……时
conj. 因为，由于；在......时，随着；以……的方式，像；正如；虽然，尽管
n. 阿斯（古罗马铜币）

词源解说

12世纪晚期进入英语，直接源自古英语的alswa，意为的确如此。

同根派生

as相关词

用法辨析

adv. (副词)

as用作副词时主要用来表示比较,意思是“像…一样；如同”。可以单独使用，但更多的是用在as...as结构中，其中第一个as是副词，其后可接形容词或副词,也可接其他成分，as前可有状语。第二个as可以是介词,也可以是连词。as用作副词时还可以指事物以同样的方式发生,意思是“和…一样”。
as...as结构多用于肯定式，偶尔也可用于否定式。表示同样意思的否定式多用so...as。as...as结构用于否定句时多用于口语，侧重“像…一样”；so...as结构则多用于书面语，侧重“像…那样”。
as...as结构表示的是同级比较，第一个as后的形容词或副词不可用比较级，必须用原级，比较的对象亦须属同类。
as...as结构表示数量或程度时，可用于“as much+(不可数名词+) as”或“as many+(可数名词复数+) as”结构。
修饰as...as结构的常见词语有nearly,almost,just,exactly,half,quite,表示倍数或次数的形容词，“数词+times”等。这些修饰语都放在as...as结构之前。
使用as...as结构时，若第一个as后的名词是单数可数名词并有形容词修饰，则应使用“as+ adj.+ a/an+ n. ”结构，即不定冠词应位于形容词和名词之间。第二个as后面的名词或代词的格不同，意思也不同。
as...as结构中后一个as用作连词时引导的从句常为省略句，省略从句中的动词可使主句的意义得到加强；反之，重复从句中的动词则可使从句的意义得到强调。
使用as...as结构时，在一定的上下文中可以省去其中的一个。

英汉例句

用作副词 (adv.)

She is as tall as her mother.
她和她母亲一样高。

用作介词 (prep.)

As a child,he lived in Japan.
他小的时候住在日本。

用作连词 (conj.)

引导时间状语从句

I was coming in as he was going out.
我进来的时候,他正出去。

引导原因状语从句

As rain has fallen,the air is cooler.
由于下了雨，空气比较凉爽。

引导让步状语从句

Child as is Paul,he knows enough to tell good from bad.
保尔虽是个孩子，却已懂得区分好坏。

引导比较状语从句

Run as fast as you can.
你能跑多快就跑多快。

引导方式状语从句

When in Rome,do as the Romans do.
入乡随俗。

用于插入语

As I said in my last letter,I am taking the exam in July.
我上次信里已经说过，我七月份要考试。

as更多例句

词组短语

用作副词 (adv.)

～+形容词+as+名词

as alike as chalk and cheese 本质上完全两样的，截然不同的
as big as life (画像等)与原物一样大的；千真万确的
as black as a raven 像乌鸦一般黑
as black as a thunder 面带怒容
as black as coal 黑得像煤一样

as更多词组

英英字典

剑桥英英字典

used in comparisons to refer to the degree of something
used to describe the purpose or quality of someone or something
(BECAUSE) because
(WHILE) during the time that
(LIKE) in the same way
(ALTHOUGH) although

柯林斯英英字典

If something happens as something else happens, it happens at the same time.
You use as to say how something happens or is done, or to indicate that something happens or is done in the same way as something else.
You use as to introduce short clauses that comment on the truth of what you are saying.
You can use as to mean "because" when you are explaining the reason for something.
You use the structure as...as when you are comparing things.
As is also a conjunction.
You use as...as to emphasize amounts of something.
You say as it were in order to make what you are saying sound less definite.
You use expressions such as as it is, as it turns out, and as things stand when you are making a contrast between a possible situation and what actually happened or is the case.
You use as when you are indicating what someone or something is or is thought to be, or what function they have.
If you do something as a child or as a teenager, for example, you do it when you are a child or a teenager.
You use as in expressions like as a result and as a consequence to indicate how two situations or events are related to each other.
as ever&rarrsee ever
as a matter of fact&rarrsee fact
as follows&rarrsee follow
as long as&rarrsee long
as opposed to&rarrsee opposed
as regards&rarrsee regard
as soon as&rarrsee soon
as such&rarrsee such
as well&rarrsee well
as well as&rarrsee well
as yet&rarrsee yet
You use as for and as to at the beginning of a sentence in order to introduce a slightly different subject that is still connected to the previous one.
You use as to to indicate what something refers to.
If you say that something will happen as of a particular date or time, you mean that it will happen from that time on.
You use as if and as though when you are giving a possible explanation for something or saying that something appears to be the case when it is not.
an ancient Roman unit of weight approximately equal to 1 pound troy (373 grams) 373
American Samoa

专业释义

商业

见票照付(的)，即期(的)

电子、通信与自动控制技术

业馀电台 (amateur station)
安
自治系统 (autonomous system)

计算机科学技术

位址空间 (address space)
高级系统 (advanced system)
鑑认伺服器 (authentication server)
安培秒
自动选择 (automatic selection)
自动同步器 (automatic synchronizer)
自动交换 (automatically switching)
辅助储存器 (auxiliary storage)
辅助储存 (auxiliary store)

化学

丙烯腈/苯乙烯树脂
丙烯腈-苯乙烯树脂
不对称因数
不对称因子

地球科学

高层云