基数词如下:
1、1-10的基数词:one. two. three. four. five. six. seven. eight. nine. ten.
2、11-19的基数词: eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen.
3、21-29的基数词:twenty-one, twenty-two, twenty-three, twenty-four, twenty-five, twenty-six, twenty-seven, twenty-eight, twenty-nine.
4、20-90的基数词:twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety.
5、100 基数词 :hundred.
6、1-10的序数词:first. second. third. fourth. fifth. sixth. seventh. eighth. ninth. tenth.
7、11-19的序数词:eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth.
8、21-29的序数词:twenty-first,
twenty-second, twenty-third, twenty-fourth, twenty-fifth, twenty-sixth,
twenty-seventh, twenty-eighth, twenty-ninth.
9、20-90的序数词:twentieth, thirtieth, fortieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth.
10、100序数词:hundredth.
基数词和序数词的变化规则口诀
变化口诀1:
一、二、三,单独记;八去t,九除e,ve要用f替,整十基数变序数,先把ty变成tie;要是遇到两位数,十位基数个位序,th最后加上去。
变化口诀2:
基变序,容易记,加上th就可以;
一二三,特殊记,词尾字母tdd;
八减t,九减e,f来把ve替;
若是遇到整十数,ty变作tie;
若是遇到几十几,只变个位就可以。
解析:
1、one,two,three这三个变为序数词分别是first,second,third,这三个需单独记忆。
2、从第四开始,基数词变为序数词都要加th。
3、eight变为序数词的.'时候少个t不加只加h;nine变为序数词要去掉e再加th。
4、ve结尾的单词five和twelve变为序数词时要把ve改为f,再加th。
5、y结尾的单词即整十数的单词要把y变为ie,再加th。
6、如果把几十几的数变为序数词,只把个位上的数变为序数词就可以。
举例说明:
1-10的序数词:first,second,third,fourth, fifth, sixth, seventh. eighth, ninth, tenth.
11-19的序数词:eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth.
21-29的序数词:twenty-first, twenty-second, twenty-third, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh, twenty-eighth, twenty-ninth.
20-90整十的序数词:twentieth, thirtieth, fortieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth.
100序数词:one hundredth.