acquaintance
词根词缀：
词根
quaint= to know 知道
acquaint v. 告知
ac 加强 + quaint 知道 → 使〔人们〕知道 → 告知
acquaintance n. 熟悉；熟人
acquaint 告知 + ance 状态，性质，状况 → 熟悉；熟人
quaint adj. 奇特的，古怪的（人们想要知道怎么回事）
数据来源：新东方英语词汇速记大全
相关例句：
It will be advisable for you to drop an acquaintance such as John; he is not a good companion for you.
你和约翰那样的人断绝往来是明智的，对于你他并不是一个好伙伴。
I have struck up an acquaintance with him.
我已与他结识。
I have a large circle of friends and acquaintances engaged in photography.
我在摄影界交游甚广。
He is an old journalistic acquaintance.
他是我在新闻界的一位旧交。
I first made his acquaintance in the early 1960s
我与他初次相识是在20世纪60年代早期。
They married on brief acquaintance.
他们相识不久就结婚了。