4、acquaint Vt.结识,使熟悉,使了解;
acquaint oneself with sb/sth= be acquainted with sb/sth= be familiar with sb/sth 了解... acquaintance n.熟悉,了解[c]熟人;
5、acquire Vt.(通过努力)获得 -quire 追求 acquire a degree/language(褒义)
inquire 询问,调查(into); require 需要,要求; enquire 询问,打听(about),调查
Can I enquire about the accident?能否请问这次事故的情况?