as词性：as可作介词、副词、连词和名词四种词性。中文含义有“像”、“作为”、“像……一样”、“当……时”、“随着”、“因为”、“照……方式”、“阿斯”，还可以指“A”的复数。
as的中文意思及用法介绍
1、作为介词时，译为像;如同;作为;当作。
例句：They were all dressed as clowns.
他们都打扮成小丑。
She works as a courier.
她的职业是导游。
The news came as a shock.
消息传来，令人震惊。
2、作为副词时，译为像…一样，如同;(指事情以同样的方式发生)和…一样。
例句：You're as tall as your father.
你和你父亲一样高。
As always, he said little.
他和平时一样，少言寡语。
Her skin was as smooth as silk.
她的皮肤像丝绸一样光滑。
3、作为连词时，译为当…时;随着;照…方式;因为;由于。
例句：He sat watching her as she got ready.
他一直坐着看她准备停当。
They did as I had asked.
他们是按照我的要求做的。
As you were out, I left a message.
你不在，所以我留了一张字条儿。
As you know, Julia is leaving soon.
你是知道的，朱莉娅马上要离开了。
Happy as they were, there was something missing.
尽管他们很快乐，但总缺少点什么。
4、作为名词时，译为“A”的复数;阿斯。
