acquaint 使了解(to make famliar)
释义：
1.acquaint是正式用词,基本意思是“让某人获知”,指向某人介绍某事的经过或传递有关全过程的信息,使其知晓.
2 .acquaint是及物动词,以“告知”的对象为间接宾语(名词、人称代词或反身代词),而直接宾语即告知的内容则由with引起的介词短语或名词性从句充当.
3.acquaint的过去分词acquainted常用作形容词,用于系表结构中,强调熟悉或知晓的状态.
回答你的问题：
1.acquaint onself with sth 使某人了解某事
You must acquaint yourself with your new job.
你必须熟悉你的新工作.
He acquaints himself with the training of the units.他经常了解部队的训练情况.
2.此词用于被动语态中,过去分词acquainted已经失去动作意义,相当于一个形容词.
例如:“我是去年认识他的.”不能译作:I acquainted him last year.或 I was acquainted with him last year.第一句是语态错误,第二句混淆了“状态”和“动作”,只能译成:I got [became] acquainted with him last year.或 I made his acquaintance last year.