I know him well because he was formerly my fellow worker.是什么意思？

I know him well because he was formerly my fellow worker.

我所以对他熟悉,是因为我和他一起工作过.

know

v. 知道，了解，认识，确信；n. 知情；

例句
I know you're above me socially, but I must say I find your attitude offensive...
我明白你的社会地位比我高，但我得说我觉得你的态度很粗鲁。

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。

well

adv. 好，很，好意地，高高兴兴地；adj. 健康的，井的，良好的，恰当的；int. （用于表示惊讶，疑虑，接受等）；n. 泉，源泉，水井；vi. （液体）涌出，流出，涌流，涌上；vt. 涌出，喷出；

例句
He was well acquainted with the literature of France, Germany and Holland...
他对于法国、德国和荷兰的文学了如指掌。

because

conj. 因为；

例句
5,000 people die every year because of accidents in the home...
每年有5,000人死于家中的意外事故。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

formerly

adv. 原来，原先，以前，从前，刚才，先头；

例句
He had formerly been in the Navy.
他从前在海军服役。

my

adj. 我的(I的所有格形式)；int. 啊呀，天啊；

例句
Racial discrimination is abhorrent to my council and our staff...
我的顾问班子和全体工作人员都对种族歧视深恶痛绝。

fellow

n. 同伴，男子，（大学的）研究员，（某些学院或大学的）董事；adj. 同伴的，同事的，同类的，同情况的；vt. 使…与另一个对等，使…与另一个匹

例句
His fellow officers regarded him with awe as some sort of genius...
同事们很敬畏他，视他如天才。

worker

n. 工人，员工，劳动者，[虫]工蜂，工蚁；

例句
A worker was decapitated when a lift plummeted down the shaft on top of him...
电梯沿着电梯井垂直坠落，把一名工人砸得身首异处。