1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,30,40,50,60...答:(1)从第一至第十九 其中,one— first, two— second, three— third, five— fifth,eight—eighth,nine—ninth,twelve— twelfth为特殊形式,其它的序数词都是由其相对应的基数词后面添加“th”构成。例如: six— sixth、nineteen— nineteenth.(2)从第二十至第九十九 整数第几十的形式由...