基数词1one2two3three4four5five6six7seven8eight9nine第1第2第3第4第5第5第7第8第91st2nd3rd4th5th6th7th8th9th序数词firstsecondthirdfourthfifthsixthseventheighthninth基数词序数词基数词20twenty30thirty40forty50fifty60sixty70seventy80eighty90ninety100one hundred序数词第2020thtwentieth第3030ththirtieth第4040thfortieth第5050thfiftieth第6060thsixtieth第7070thseventieth第8080theightieth第9090thninetieth第100100thone hundredth10ten11eleven12twelve13thirteen14fourteen15fifteen16sixteen17seventeen第1010thtenth第1111theleventh第1212thtwelfth第1313ththirteenth第1414thfourteenth第1515thfifteenth第1616thsixteenth第1717thseventeenth20twenty21twenty-one22twenty-two第2020thtwentieth第2121sttwenty-first第2222ndtwenty-second30thirty31thirty-one32thirty-two第3030ththirtieth第3131stthirty-first第3232ndthirty-second23twenty-three第2323rdtwenty-third24twenty-four第2424thtwenty-fourth25twenty-five第2525thtwenty-fifth26twenty-six第2626thtwenty-sixth33thirty-three第3333rdthirty-third34thirty-four35thirty-five36thirty-six第3434ththirty-fourth第3535ththirty-fifth第3636ththirty-sixth27twenty-seven第2727thtwenty-seventh37thirty-seven第3737ththirty-seventh18eighteen19nineteen第1818theighteenth第1919thnineteenth28twenty-eight第2828thtwenty-eighth29twenty-nine第2929thtwenty-ninth38thirty-eight第3838ththirty-eighth39thirty-nine第3939ththirty-ninth
