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- eight 29 twenty- nine 30 thirty 31 thirty- one 32 thirty- two 33 thirty- three 34 thirty- four 35 thirty- five 36 thirty- six 37 thirty- seven 38 thirty- eight 39 thirty- nine 40 forty 41 forty- one 42 forty- two 43 forty- three 44 forty- four 45 forty- five 46 forty- six 47 forty- seven 48 forty- eight 49 forty- nine 50 fifty 51 fifty- one 52 fifty- two 53 fifty- three 54 fifty- four 55 fifty- five 56 fifty- six 57 fifty- seven 58 fifty- eight 59 fifty- nine 60 sixty 61 sixty- one 62 sixty- two 63 sixty- three 64 sixty- four 65 sixty- five 66 sixty- six 67 sixty- seven 68 sixty- eight 69 sixty- nine 70 seventy 71 seventy- one 72 seventy- two 78 seventy- eight 90 ninety 79 seventy- nine 80 eighty 81 eighty- one 82 eighty- two 83 eighty- three 84 eighty- four 91 ninety-one 92 ninety- two 93 ninety- three 94 ninety- four 95 ninety- five 96 ninety- six 97 ninety- seven 98 ninety- eight 99 ninety- nine 100 a hundred73 seventy- three 85 eighty- five 74 seventy- four 75 seventy- five 76 seventy- six 86 eighty- six 87 eighty- seven 88 eighty- eight 77 seventy- seven 89 eighty- nine 序数词 1.第一类:在括号里的是缩写情势,均在阿拉伯数字后面加上响应序数词的最后两个字母组成,以下各类与此雷同.） first (1st) 第一 second (2nd) 第二 third (3rd) 第三 2.第二类：这一类序数词均在响应的基数词后面加上后缀－th组成.要留意个中fifth.eighth.ninth.twelth四个词的拼法. fourth (4th) 第四 fifth (5th) 第五 sixth (6th) 第六 seventh (7th) 第七 eighth (8th) 第八 ninth (9th) 第九 tenth (10th) 第十 eleventh (11th) 第十一 twelfth (12th) 第十二 thirteenth (13th) 第十三 fourteenth (14th) 第十四 本文来源：https://www.wddqw.com/doc/8ae3951b9989680203d8ce2f0066f5335b816727.html