279基数词和序数词 基数词:指描述事物数量多少的词。 序数词:指表示顺序的数词。 1.(1-10)基数词):one.two.three.four.five.six.seven.eight.nine.ten. 2.(1-10)序数词):first.second.third.fourth.fifth.sixth.seventh.eighth.ninth.tenth. 总结规则:基数词1-10变序数词的规则,直接在后面加th。但是第一first,第二second,第三third不一样。还要注意第五是把five后面的ve变成f再加th,第八因为尾部已经有一个t,所以直接加上h。第九把nine后面的e去掉再加th。 3.(11-19)基数词):eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen. 4.(11-19)序数词):eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth. 总结规则:基数词11-19变序数词,在此基础上加上th,但是要注意的是第十二,是把十二twelve的ve变成f,再加th。 5.(21-29)基数词):twenty-one,twenty-two,twenty-three,twenty-four,twenty-five,twenty-six,twenty-seven,twenty-eight,twenty-nine. 6.(21-29)序数词):twenty-first,twenty-second,twenty-third,twenty-fourth,twenty-fifth,twenty-sixth,twenty-seventh,twenty-eighth,twenty-ninth. 总结规则:基数词二十几十位上和个位数的数都是基数词。三十几,四十几...九十几亦是如此。 本文来源:https://www.wddqw.com/doc/df33eb0cba0d6c85ec3a87c24028915f804d8431.html