7、 seventieth/70th 第七十80 eighty eightieth/80th 第八十90 ninety ninetieth/90th 第九十100 hundred hundredth/100th 第一百基数词的构成和用法(1)最基本的基数词如下表所示:one two three four five six sev
8、en eight nine ten eleventwelve thirteen fourteen fifteen sixteen seventeen eighteen nineteentwenty thirty forty fifty sixty seventy eight