分数是由基数词和序数词一起来表示的。基数词作分子,序数词作分母,除了分子是“1”以外,其它情况下序数词都要用复数形式。
3/4 three fourths或 three quarters
1/3 one third或a third
24/25 twenty-four twenty-fifths
1/2 a half
1/4 one quarter或a quarter
1 1/2 one and a half
1 1/4 one and a quarter
当分数后面接名词时,如果分数表示的值大于1,名词用复数;小于1,名词用单数。
1 1/2 hours 一个半小时(读作 one and a half hours)
2 3/4 meters 二又四分之三米(读作two and three-fourths meters)
4/5 meter 五分之四米
5/6 inch 六分之五英寸
表示“n次方”的说法:指数用序数词,底数用基数词。
10的7次方 the seventh power of ten(ten to the seventh power)
6的10次方 the tenth power of six(six to the tenth power)