一.基数词、序数词 二.数词的表示法基数词 序数词 基数词 序数词 one twelve two twenty three twenty-one four forty five one hundred six one hundred and five eight one hundred and twenty-nine nine nineteen 一.基数词、序数词 first second third fourth fifth sixth eighth ninth twelfth twentieth twenty-first fortieth one hundredth one hundred and fifth one hundred and twenty-ninth nineteenth二.基数词的读法 1、百位和十位间用 and 连接, 十位和个位间用 - 连接 three hundred and twenty-one 321 2、右往左数,三位一组,逗号隔开.依次是 thousand(千) million (百万) billion (十亿)four thousand three
