基数词与序数词 (2).ppt

1

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51:one-first2:two-second3:three-third4:four-fourth5:five-fifth6

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106:six-sixth7:seven-seventh8:eight-eighth9:nine-ninth10:ten-tenth11

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1511:eleven-eleventh12:twelve-twelfth13:thirteen-thirteenth14:fourteen-fourteenth15:fifteen-fifteenth16

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2016:sixteen-sixteenth17:seventeen-seventeenth18:eighteen-eighteenth19:nineteen-nineteenth20:twenty-twentieth21

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2521:twenty-one-twenty-first22:twenty-two-twenty-second23:twenty-three-twenty-third24:twenty-four-twenty-fourth25:twenty-five-twenty-fifth26

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3026:twenty-six--twenty-sixth27:twenty-seven--twenty-seventh28:twenty-eight--twenty-eighth29:twenty-nine--twenty-ninth30:thirty---thirtieth总

结

一基数词变序数词口诀：

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。

总

结

二一，二，三，特殊记，词尾各是t,d,d.

th,四加起，八去t,九去e,y结尾改ie.

ve结尾变f,five,twelve是两兄弟。

若是遇到几十几，只变个位就可以。注

释解析口诀：one→first，two→second，three→third这三个词变化特殊，要单独记；eight→eighth，nine→ninth，八去t，九去e后再加-th；five→fifth，twelve→twelfth，五、十二把ve换成f再加-th；twenty→twentieth，thirty→thirtieth...整十先把词尾y改为ie再加-th。两位数时则十位数用基数词，个位数用序数词，如：twenty-first。See

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