Cardinal numerals ： ( 基数词 )1---one2---two3---three4---four5---five6---six7---seven8---eight9---nine10---tenOrdinary numerals ： ( 序数词 )1---first2---second3---third4---5---fifth6---7---8---eighth9---ninth10---fourthsixthseventhtenth1st2nd3rd4th5th6th7th8th9th10th11---eleven12---twelve13---thirteen14---fourteen15---fifteen16---sixteen17---seventeen18---eighteen19---nineteenCardinal numerals ： ( 基数词 )11---eleventh12---13---thirteenth14---fourteenth15---fifteenth16---sixteenth17---seventeenth18---eighteenth19---nineteenthOrdinary numerals ： ( 序数词 )twelfth11th12th13th14th15th16th17th18th19th20---twenty21---twenty-one22---twenty-two30---thirtyCardinal numerals ： ( 基数词 )20---twentieth21---twenty-first22---twenty-second23---twenty-third24---twenty-fourth25---twenty-fifth26---twenty-sixth27---twenty
