1到31的基數(shù)與序數(shù)英語單詞?one first two second three third four fourth five fifth six sixth seven seventh eight eighth nine ninth ten tenth eleven eleventh twelve twelfth thirteen thirteenth fourteen fourteenth fifteen fifteenth sixteen sixteenth seventeen seventeenth eighteen eighteenth nineteen nineteenth twenty twentieth twenty-one twenty-first twenty-two twenty-second twenty-three twenty-third twenty-four twenty-fourth twenty-five twenty-fifth twenty-six twenty-sixth twenty-seven twenty-seventh twenty-eight twenty-eighth twenty-nine twenty-ninth thirty thirtieth