第一到第三十的英语单词序数词 1st First 2nd Second 3rd Third 4th Fourth 5th Fifth 6th Sixth 7th Seventh 8th Eighth 9th Ninth 10th Tenth 11th Eleventh 12th Twelfth 13th Thirteenth 14th Fourteenth 15th Fifteenth 16th Sixteenth 17th Seventeenth 18th Eighteenth 19th Nineteenth 20th Twentieth 21st Twenty-First - 1 - 22nd Twenty-Second 23rd Twenty-Third 24th Twenty-Fourth 25th Twenty-Fifth 26th Twenty-Sixth 27th Twenty-Seventh 28th Twenty-Eighth 29th Twenty-Ninth 30th Thirtieth。 - 2 - 本文来源：https://www.wddqw.com/doc/edd2c5ac0ba1284ac850ad02de80d4d8d15a0121.html