一到30序数词用英语怎么写?答:前十:First, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth,十一到二十:eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, ninteenth, twentieth,二十以后就是前十加上twenty- ,例如 【第二十一】twenty-first,三十:thirtieth ...