1到31的基数与序数英语单词?onefirsttwosecondthreethirdfourfourthfivefifthsixsixthsevenseventheighteighthnineninthtententheleveneleventhtwelvetwelfththirteenthirteenthfourteenfourteenthfifteenfifteenthsixteensixteenthseventeenseventeentheighteeneighteenthnineteennineteenthtwentytwentiethtwenty-onetwenty-firsttwenty-twotwenty-secondtwenty-threetwenty-thirdtwenty-fourtwenty-fourthtwenty-fivetwenty-fifthtwenty-sixtwenty-sixthtwenty-seventwenty-seventhtwenty-eighttwenty-eighthtwenty-ninetwenty-ninththirtythirtieth