基数词 基数词 1st 序数词 缩写 序数词 first second 缩写 seventeen one seventeenth 17th two three 2nd 3rd 4th 5th 6th 7th 8th 9th 10th eighteen eighteenth 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st third nineteen twenty nineteenth twentieth four fourth five six fifth twenty-one twenty-two twenty-three twenty-four twenty-first twenty-second twenty-third sixth seventh eighth seven eight nine twenty-fourth ninth twenty-five twenty-six twenty-fifth ten tenth eleventh twelfth twenty-sixth twenty-seventh twenty-eighth eleven 11th 12th 13th 14th 15th 16th twenty- seven twelve thirteen twenty- eight twenty- nine thirteenth twenty-ninth fourteen fifteen sixteen fourteenth fifteenth sixteenth thirty thirty- one thirtieth thirty-first 基数词 序数词 缩写 基数词 seventeen 序数词 seventeenth 缩写 one first 1st 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st two three second 2nd 3rd 4th 5th 6th 7th 8th 9th 10th eighteen eighteenth third nineteen twenty nineteenth twentieth four fourth five six fifth twenty-one twenty-two twenty-three twenty-four twenty-first twenty-second twenty-third sixth seventh eighth seven eight nine twenty-fourth ninth twenty-five twenty-six twenty-fifth ten tenth eleventh twelfth twenty-sixth twenty-seventh twenty-eighth eleven 11th 12th 13th 14th 15th twenty- seven twelve thirteen twenty- eight twenty- nine thirteenth twenty-ninth fourteen fifteen fourteenth fifteenth thirty thirty- one thirtieth thirty-first sixteen sixteenth 16th 本文来源：https://www.wddqw.com/doc/04fb9fcbb81aa8114431b90d6c85ec3a87c28ba7.html