1.first,2.second,3.third,4.forth,5.fifth,6.sixth,7.seventh,8.eighth,9.ninth,10.tenth,11.eleventh,12.twelfth,13.thirteenth,14.forteenth,15.fifteenth,16.sixteenth,17.seventeenth,18.eighteenth,19.nineteenth,20.twentieth ,21.twenty-first,22.twenty-second,23.twenty-third,24.twenty-forth,25.twenty-fifth,26.twenty-sixth,27.twenty-seventh,28.twenty-eighth,29.twenty-ninth,30.thirtieth,31.thirty-first
a淡淡小雨
