小学英语语法:基数词和序数词.doc
小学英语语法:基数词和序数词一.基数词(1)1-12 独立成词one two three four five six seven eight nineten eleven twelve(2)1-19 由3-9teen构成14-fourteen 16-sixteen 17-seventeen 19-nineteen特殊拼写:13-thirteen 15-fifteen 18-eightteen(3)20-90整十位数 以-ty结尾20-twenty 30-thirty 40-forty 50-fifty 80eighty60-sixty 70-seventy 90-ninety(4)21-99 两位数 十位与各位之间有“-”21 twenty-one 55 fifty-five 99 ninety-nine(5)101-999 三位数 百位于十位/各位之间加and101 one hundred and one840 eight hundred and forty693 six hundred and ninety-three二.序数词(1)1-3 first second third(2)4-19 相应基数th,fourth,sixth,eleventh特殊拼写:fifth,eighth,ninth,twelfth(3)20-90 y变成ieth 如twentieth thirtieth(4)21-99 只把各位的基数词变成序数词如twenty-first(5)序数词缩写数字最后字母如1st 2nd 3rd 4th(序数词构成规律)基变序 有规律一、二、三 特殊记 面目全非要注意加th从4起八少“t” 九去“e”“ve”要用“f”替 (five,twelve)见“y”变成“i”和“e” 词尾再加“th”(twenty,thirty,ninety)若是遇到几十个 只变各位就可以序数词缩写记清楚 数字后跟两个字母 8thone is never too old to learn!(活到老,学到老!)2