third 3rdfourth 4thfifth 5thsixth 6thseventh 7theighth 8th nenth 9th我这里有段话,可以帮助牢记序数词:基变序有规律,后面加上th,一二三特殊记,末尾字母t,d.d.八加h,九去e,five,twelve两兄弟,遇到ve,f替,遇到几十不要急,去掉y变ie,末尾再加th.肯定对的!!!!!!!!!!the third 3the fourth4the fifth 5the sixth 6the seventh 7the eighth 8the ninth 9the third 3 the fourth4 the fifth 5 the sixth 6 the seventh 7 the eighth 8 the ninth 9 一般都在数此后加th除 1 2 3 5 8 9 特殊first 1second 2 third 3fifth(改ve为f加th)eighth(只加h)ninth(去e加th)最佳答案the third 3 the fourth4 the fifth 5 the sixth 6 the seventh 7 the eighth 8 the ninth 9the third 3 the fourth4 the fifth 5 the sixth 6 the seventh 7 the eighth 8 the ninth 9