I often hear him singing.是什么意思？

I often hear him singing.

我常听见他唱歌。

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

hear

vt.& vi. 听到，听见；vt. 听说，得知，听取，审理；vi. 听，听见；

例句
When I listen to her play I can hear a new Nigel Kennedy.
从她的演奏中我听出了新一代的奈杰尔·肯尼迪。

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。

singing

n. 唱歌，鸟鸣，<物，无>振鸣，（机器或系统）技术先进；v. 唱，歌唱(sing的现在分词)，（鸟）鸣，嗡嗡叫，呜呜作响；adj. 唱歌的，音乐般的；

例句
She loved singing as a child and started vocal training at 12.
她从小就喜欢唱歌，12岁开始了声乐训练。