as
翻译
作为, 像, 因为, 当…时
例句
He works as a teacher.
他当老师。
She is as tall as her brother.
她和她哥哥一样高。
As it was raining, we stayed inside.
因为下雨，我们待在室内。
Call me as you leave.
你离开时给我打电话。
语法模式
as ((a/an + 名词)) 作为（某物）的角色。 He works as a teacher.
as ((形容词/副词)) as ((名词/代词)) 用于比较。 She is as tall as her brother.
as ((从句)) 因为。 As it was raining, we stayed inside.
as ((从句)) 在…的同时。 Call me as you leave.
近义词
同义词: like (像), since (既然), because (因为), while (当...时候)
词源
源自古英语“alswa”，意为“完全如此，正如”。
记忆技巧
“As”是一个有很多用法的小词。可以把它想象成连接思想的桥梁：角色（as a...）、比较（as...as）、原因（as...）或时间（as...）。