Unit8Whenisyourbirthday
23yearmonthdaydatetwothousandandelevenDecembertwenty-thirdDecember23rd,2011(Decembertwenty-third,twothousandandeleven)onetwothreefourfivesixseveneightninetenfirstsecondthirdfourthfifthsixthseventheighthninthtenth1st2nd3rd4th5th6th7th8th9th10theleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentyeleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwentieth11th12th13th14th15th16th17th18th19th20th基数词基数词序数词序数词基变序,有规律,词尾加上th
123,特殊记,词尾字母t,d,d
8去t,9去e,f来把ve替
twenty-onetwenty-twotwenty-threethirtyfortyfiftysixtyseventyeightyninetyhundredtwenty-firsttwenty-secondtwenty-thirdthirtiethfortiethfiftiethsixtiethseventietheightiethninetiethhundredth21st22nd23rd30th40th50th60th70th80th90th100th整十y变i,th前有小e来基数词序数词Sun