基数词序数词讲解.docx

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基数词英语中数词主要分为基数词和序数词两类。
基数词：
表示数目的词称为基数词。其形式如下：
h第39thirty-ninth
第40fortieth第41forty-first第42forty-second第43forty-third第44forty-fourth第45forty-fifth第46forty-sixth第47forty-seventh第48forty-eighth第49forty-ninth第50fiftieth第51fifty-first第52fifty-second第53fifty-third第54fifty-fourth55fifty-fifth第56fifty-sixth第57fifty-seventh第58fifty-eighth第59fifty-ninth第60sixtieth第61sixty-first第62sixty-second第63sixty-third第64sixty-fourth第65sixty-fifth第66sixty-sixth第67sixty-seventh第68sixty-eighth第69sixty-ninth第70seventieth第71seventy-first第72seventy-second第73seventy-third第74seventy-fourth第75seventy-fifth第76seventy-sixth第77seventy-seventh第78seventy-eighth第79seventy-ninth第80eightieth第81eighty-first第82eighty-second第83eighty-third第84eighty-fourth第85eighty-fifth第86eighty-sixth第87eighty-seventh88eighty-eighth89eighty-ninth第90ninetieth第91ninety-first第92ninety-second第93ninety-third第94ninety-fourth第95ninety-fifth第96ninety-sixth第97ninety-seventh98ninety-eighth第99ninety-ninth第100onehundredth1、第一类first(1st)第一second(2nd)第二third(3rd)第三
(在括号里的是缩写形式)2、第二类:fourth(4th)第四fifth(5th)第五sixth(6th)第六seventh(7th)第七eighth(8th)第八ninth(9th)第九tenth(10th)第十eleventh(11th)第twelfth(12th)第十二thirteenth(13th)第十三fourteenth(14th)第十四fifteenth(15th)第十五sixteenth(16th)第十六seventeenth(17th)第十七eighteenth(18th)第十八nineteenth(19th)第十九
这一类序数词共有十六个。均在相应的基数词后面加上后缀-th构成。要注意其中fifth