数词的用法及训练数词是表示数量多少或顺序先后的词。分为基数词和序数词。（一）基数词1. 表示数量多少的词是基数词，如：one, two, three等。2. 数词的构成1）从112分别由从one到twelve，12个各不相同的词表示。one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve2）从1319均以后缀-teen结尾。thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen3）从2090的整十数词均以后缀-ty结尾。表示“几十几”时，个位和十位之间需加连字符。twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety21 twenty-one 32 thirty-two 43 forty-three4）整百数由19加hundred构成。10
