学习通first翻译：adv.第一；首先；优先；宁愿；n.第一；开始；冠军；adj.第一的；基本的；最早的；num.第一。短语搭配：first time第一次；第一时间。at first起先，首先；最初。quality first质量第一。first of all adv.首先。customer first客户至上；顾客至上。first step第一步，首要步骤。
例句：Sunday is the first day of the week。星期日是每周的第一天。He took the first bus to town。他乘最早的一班公共汽车进城。He was the first to be there。他第一个到那里。He will be a safe first。他将会稳拿冠军。
序数词例句：his first wife。他的第一个妻子。It was the first time they had ever met。这是他们初次见面。This is the first time she has experienced disappointment。这是她第一次感受到失望。