1、基数词1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen 16 sixteen 17 seventeen 18 eighteen 19 nineteen 20 twenty 21 twenty-one 22 twenty-two 23 twenty-three 24 twenty-four 25 twenty-five 26 twenty-six 27 twenty-seven 28 twenty-
2、eight 29 twenty-nine 30 thirty 31 thirty-one 序数词第 1 first 第 2 second 第 3 third 第 4 fourth 第 5 fifth 第 6 sixth 第 7 seventh 第 8 eighth 第 9 ninth 第 10 tenth 第 11 eleventh 第 12 twelfth 第 13 thirteenth 第 14 fourteenth 第 15 fifteenth 第 16 sixteenth 第 17 seventeenth 第 18 eighteenth 第 19 nineteenth第 20 twentieth 第 21 twenty-first第 22 twenty-second 第 23 twenty-third 第 24 twenty-fourth 第 25 twenty-fifth 第 26 twenty-sixth 第 27 twenty-seventh 第 28 twenty-eighth 第 29 twenty-ninth 第 30 thirtieth 第 31 thirty-first
