first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
eleventh
twelfth
thirteenth
fourteenth
fifteenth
sixteenth
seventeenth
eighteenth
nineteenth
twentith
以此类推
很简单的,1作个位除11外加ST,2作个位除12外加ND,3作个位加RD,其余都加TH first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
eleventh
twelfth
thirteenth
fourteenth
fifteenth
sixteenth
seventeenth
eighteenth
nineteenth
twentith
以此类推
很简单的,1作个位除11外加ST,2作个位除12外加ND,3作个位加RD,其余都加TH