n.同伴；志趣相投的人；成对物品之一；参考书

v.陪伴

He is a good companion on the journey. 他是个好旅伴。

He had always considered her an ideal companion for his son. 他一直以为她是他儿子的理想伴侣。

The dog has been her constant companion these past ten years. 过去十年来,这只狗一直与她形影不离。

His brother is not much of a companion for him. 他兄弟与他情趣不甚相投。

The companion volume will soon be published. 这卷书的姊妹篇即将问世。

She takes a traveller's companion with her for this journey. 她为这次旅行带了一本旅行指南。

I worked as a companion to an old princess. 我当过一位老公爵夫人的陪伴人。

companion的基本意思是“同伴”“伙伴”,指共同度过闲暇时建立起来的友谊联系并相伴的人或动物,也可指与另一人共事、同甘共苦的人或有共同兴趣、爱好的人,引申也可指成双、成对或成套的物品之一。

当表示“(某人)…的同伴”时,常用介词for或to。