first second third forth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth twenty-first twenty-second twenty-third twenty-forth twenty-fifth twenty-sixth twenty-seventh twenty-eighth twenty-ninth thirtieth thirty-first
一般類似于第二十一,第二十二,第二十三,第二十四……這樣的表達都是用21st,22nd,23rd,24th……來表達,只有逢整十這樣的數(shù)不一樣.