first second third forth fifth eighth ninth twelfth thirteenth twentieth fortieth fifty-first eighty-third
保证正确,我们上学期的英语书上有的,而且要强调twelve的序数词是twelfth,v变f,和leaf的复数是leaves的f变v的道理是一样的,twelvth是错误的,没有这样变的.
first second third forth fifth eighth ninth twelfth thirteenth twentieth fortieth fifty-first eighty-third
保证正确,我们上学期的英语书上有的,而且要强调twelve的序数词是twelfth,v变f,和leaf的复数是leaves的f变v的道理是一样的,twelvth是错误的,没有这样变的.