1)commence business,开始营业2)start operations,开始营业3)line open to traffic,开始营业的铁路线4)opening and closing times,每天开始营业和关门时间5)Start to Start,开始-开始6)begin,开始7)commencement,开始8)commence,开始9)commencing,开始10)initiate,开始
用法例句
As one of the Tenses,the initiative tense means the phase of beginning in the time order.