英语数词的分类

1、数词.数词：表示数目多少或顺序多少的词基数词：描述事物数量的多少的词(one/two/three)数词序数词：表示顺序的数词(first/second/third)(1)基数词1-12独立成词one/two/three/four/five/six/seven/eight/nine/ten/eleven/twelve13-19 加 teenthirteen/fifteenfourteen/sixteen/seventeen/nineteen20-90 加 tyfortytwenty/thirty/fifty/sixty/seventy/ninetyD.几十几21 twenty-one/22 tw

2、enty-two/23 twenty-three/24 twenty-four /25 twenty-five/26 twenty-six/27 twenty-seven/28 twenty-eight/29 twenty-nineE.百/千/百万/十亿100 One hundred1000 One thousand1000 000 One billion1000 000 000 One million(2)序数词基数词变序数词：一二三特殊记，八加h九去e, ve要用f替，词 尾再加th,整十基数词ty变成tie,词尾再加th,假设是遇到几十几， 前用基数后用序。1-12one-first/t

3、wo-second/three-third/four-fourth/five-fifth/six-sixth/seven-seventh/eight-eighth/nine-ninth/ten-tenth/eleven-eleventh/ twelve-twelfth13-19 加 ththirteenth/fourteenth/fifteenth/sixteenth/seventeenth/eighteenth/nineteenth21-29前基后序twenty-onetwenty-first/twenty-twotwenty-second/twenty-threetwent y-third

4、/twenty-fourtwenty-fourth/twenty-fivetwenty-fifth/twenty-sixt wenty-sixth/twenty-seven-twenty-seventh/twenty-eight-twenty-eighth/t wenty-ninetwenty-ninth20/00 ty变tie,词尾再加thtwenty-twentieth/thirty-thirtieth/forty-fortieth/fifty-fiftieth/sixty-sixtieth/ seventy-seventieth/eighty-eightieth/ninety-ninetieth/hundred-hundredth（3）分数：上基下序，分子大于一，分母加s1/3 one third2/3 two thirds5 1/2 five and a half2 3/4 two and three fourths(4) in+ones+整十基数词复数：在某人几十岁时In my twenties:在我二十岁时(5)百/千/百万/十亿：前有基数词不加s,后有of加shundred/thousand/million/billionone h