1到99用英语的序数词为：第1 first 1st；第2 second 2nd；第3 third 3rd；第4 fourth 4th；第5 fifth 5th；第6 sixth 6th 第7 seventh 7th；第8 eighth 8th；第9 ninth 9th；第10 tenth 10th；第11 eleventh 11th 第12 twelfth 12th；第13 thirteenth 13th；第14 fourteenth 14th；第15 fifteenth 15th 第16 sixteenth 16th；第17 seventeenth 17th；第18 eighteenth 18th；第19 nineteenth 19th 第20 twentieth 20th；第21 twenty-first 21st；第22 twenty-second 22nd；第23 twenty-third 23rd；第24 twenty-fourth 24th；第25 twenty-fifth 25th 第26 twenty-sixth 26th；第27 twenty-seventh 27th；第28 twenty-eighth 28th 第29 twenty-ninth 29th；第30 thirtieth 30th；第31 thirty-first 31st 第32 thirty-second 32nd；第33 thirty-third 33rd；第34 thirty-fourth 34th 第35 thirty-fifth 35th；第36 thirty-sixth 36th；第37 thirty-seventh 37th 第38 thirty-eighth 38th；第39 thirty-ninth 39th；第40 fortieth 40th；第50 fiftieth 第51 fifty-first；第52 fifty-second；第53 fifty-third；第54 fifty-fourth；第55 fifty-fifth 第56 fifty-sixth；第57 fifty-seventh；第58 fifty-eighth；第59 fifty-ninth；第60 sixtieth 第61 sixty-first；第62 sixty-second；第63 sixty-third；第54 sixty-fourth；第65 sixty-fifth 第66 sixty-sixth；第67 sixty-seventh；第68 sixty-eighth；第69 sixty-ninth；第70 seventieth 第71 seventy-first；第72 seventy-second；第73 seventy-third；第74 seventy-fourth 第75 seventy-fifth；第76 seventy-sixth；第77 seventy-seventh；第78 seventy-eighth 第79 seventy-ninth；第80 eightieth；第81 eighty-first；第82 eighty-second 第83 eighty-third；第84 eighty-fourth；第85 eighty-fifth；第86 eighty-sixth 第87 eighty-seventh；第88 eighty-eighth；第89 eighty-ninth；第90 ninetieth 第91 ninety-first；第92 ninety-second；第93 ninety-third；第94 ninety-fourth 第95 ninety-fifth；第96 ninety-sixth；第97 ninety-seventh；第98 ninety-eighth 第99 ninety-ninth 。扩展资料：基数词是表示数目的词称为基数词 。
其形式如下：1、从1——10 one,two,three,four,five,six,seven,eight,nine,ten.2、从 11——19 eleven,twelve, thirteen, fourteen, fifteen, sixteen, seventeen,eighteen, nineteen. 这里除 eleven, twelve, thirteen, fifteen, eighteen为特殊形式外，fourteen,sixteen,seventeen,nineteen都是由其个位数形式后添加后缀-teen构成 。3、从 20——99 整数几十中除twenty,thirty, forty,fifty,eighty为特殊形式外，sixty,seventy,ninety都是其个位数形式后添加后缀-ty构成 。
表示几十几时，在几十和个位基数词形式之间添加连字符“-” 21 twenty-one 76 seventy-six4、百位数个数基数词形式加“hundred”，表示几百，在几十几与百位间加上and.101 a hundred and one 320 three hundred and twenty 648 six hundred and forty-eight 。
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