The policeman identified him as the thief.是什么意思？

The policeman identified him as the thief.

警察认出他是小偷。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

policeman

n. （男）警察，警员，看守矿井的人，[化] 淀帚；

例句
A policeman has been shot dead in an ambush.
一次伏击中一名警察中弹身亡。

identified

v. 认出( identify的过去式和过去分词 )，支持，确认，辨认；

例句
He was identified only by his uniform and personal belongings.
他的身份只是通过制服和个人财物确定了下来。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

thief

n. 小偷，盗贼，<口>（使蜡外流的）蜡烛心结的烛花；

例句
She chased the thief for 100 yards...
她追了窃贼100码远。