adverb, verb, preposition · once; ever; previously; already; functions as a marker for actions or states that occurred in the past

我曾多次访问过这个城市。

adverb, verb · former; having previously held a particular status, title, or role

这位曾任校长的老先生非常受人尊敬。

noun · great- (grandfather, grandchild etc)

他已经有曾孙了。

proper name · surname Zeng

曾先生是一位著名的作家。