序数词基数词对照表

基数词与序数词对照表基数词序数词序数词缩写形式1one第1first1st2two第2second2nd3three第3third3rd4four第4fourth4th5five第5fifth5th6six第5sixth6th7seven第7seventh7th8eight第8eighth8th9nine第9ninth9th10ten第10tenth10th11eleven第11eleventh11th12twelve第12twelfth12th13therteen第13thirteenth13th14fourteen第14fourteenth14th15fifteen第15fifteenth15th16sixteen第16sixteenth16th17seventeen第17seventeenth17th18eighteen第18eighteenth18th19nineteen第19nineteenth19th20twenty第20twentieth20th21twenty-one第21twenty-first21st22twenty-two第22twenty-second22nd23twenty-three第23twenty-third23rd24twenty-four第24twenty-fourth24th25twenty-five第25twenty-fifth25th26twenty-six第26twenty-sixth26th27twenty-seven第27twenty-seventh27th28twenty-eight第28twenty-eighth28th29twenty-nine第29twenty-ninth29th30thirty第30thirtieth30th40forty第40fortieth40th50fifty第50fiftieth50th60sixty第60sixtieth60th70seventy第70seventieth70th80eighty第80eightieth80th90ninety第90ninetieth90th序数词记忆口诀“一、二、三”单独记，“八”去t,“九”去e，ve要用f替，整十基数变序数“ty”变成“tie”,th最后加上去。口诀详解：第一，第二，第三即first,second,third.要单独记忆。八变成第八，即eight变成eighth要去掉一个t再加上th,九变成第九要去掉一个e再加上th.五变成第五，十二变成第十二，要把ve变成f再加th。整十的基数（大于20的），ty要变成tie再加th.