应该说on the first day还是at the first day答:on the next morning, on the point of(正在…时候), on the spur of the moment(立刻) on this day, on this occasion, on time [at]:at a time(在某时), at a wedding(婚礼), at all times(一直), at any moment, at any time, at Christmas, at dark (天黑时), at dawn(在...