the first day
the second day
...third...
...fourth..
...fifth...
sixth
seventh
eighth
ninth
tenth
eleventh
twelfth
thirteenth
...
nineteenth
...
twentieth
the twenty first day
序数词的表达法first 1st;second 2nd;third 3rd;fourth 4th;fifth 5th;sixth 6th;seventh 7th;eighth 8th;ninth 9th;tenth 10th; eleventh 11th;twelfth 12th;thirteenth 13th;nineteenth 19th;twentieth 20th;thirtieth 30th;fortieth 40th;fifty-first 51st; sixty-second 62nd;seventy-third 73rd;eighty-forth 84th;ninety-fifth 95th
拼写的要点:1.英语序数词1~19中,第一,第二,第三是特殊形式,其余都是在基数词的后面加上”-th”.2.有几个序数词加”-th”时的拼法不规则,它们是:fifth,eight,ninth,twelfth.3.十位数整数的序数词的构成方法是:将整数基数词HID_BASENUM的词尾”-ty”中的”y”改写成”i”,然后加”-eth”.4.基数词”几十几”改成序数词的时候,只要把个位数改成序数词,十位数不变.如twenty-one变成twenty-first.5.序数词的缩写形式,在阿拉伯数字的后面加上序数词的最后两个字母.如:1st;2nd;3rd;4th;5th;6th;7th,…41st;52nd;63rd;74th .
后面的依次类推
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