first第一 1st second第二 2nd third第三 3rd fourth第四 4th fifth第五 5th sixth第六 6th seventh第七 7th eighth第八 8th ninth第九 9th tenth第十 10th eleventh第十一 11th twelfth第十二 12th thirteenth第十三 13th fourteenth第十四 14th fifteenth第十五 15th sixteenth第十六 16th seventeenth第十七 17th eighteenth第十八 18th nineteenth第十九 19th twentieth第二十 20th twenty-first第二十一 21st twenty-second第二十二 22nd twenty-third第二十三 23rd thirtieth第三十 30th thirty-first第三十一 31st fortieth第四十 40th fiftieth第五十 50th sixtieth第六十 60th seventieth第七十 70th eightieth第八十 80th ninetieth第九十 90th (one)hundredth第一百 100th 本文来源：https://www.wddqw.com/doc/7de4ab5158fafab068dc023c.html