第一三英语

firstly, secondly, thirdly

on the other hand

First of all, in addtion, then, moreover, furthermore, besides, the last but not the least.......

英语中第一到第十二分为三大类：一是first，second, third , 和基数词完全不同；二是基数词直接加th，如：fourth, sixth, seventh, tenth, eleventh 。三是基数词变化词尾加th，如：其余的以th结尾，如：fifth, eighth, ninth, twelfth 。