2021年牛津上海版中考语法复习：数词讲解及提升练习学案（有答案）

表示“多少”和“第几”的词，叫数词。数词分为基数词和序数词两种。

二、基数词和序数词的用法： 1) 基数词

one, two, three..., 表示“一、二、三......”等。注意eleven, twelve, thirteen, fifteen, eighteen, twenty,thirty, forty, fifty, eighty, a/one hundred/thousand等词的拼写。 2) 序数词 first, second, third..., 表示“第一、第二、第三......”等，注意first, second, third, fifth, eighth, ninth, twelfth, twentieth, twenty-first, ninety-ninth, (one) hundredth等词的拼写。 基数词与序数词的构成 基数词 序数词 基数词 序数词 基数词 序数词 one first 1st eight eighth 8th twenty-one twenty-first 21st two second 2nd nine ninth 9th ninety-nine ninety-ninth 99th three third 3rd twelve twelfth 12th one hundred one hundredth 100th five fifth 5th twenty twentieth 20th 基数词变序数词的口诀： 基变

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