核心问题
About ____ of the workers in that factory are young people. A. third-fifths B. three-fifths C. three-fives D. three-fifth 我在选项 A 和选项 B 之间很难作出选择。
词典解答
应当牢记分数词的构成方法:序数词代表分母,基数词代表分子。在分子为2以上的数时,序数词要用复数:
one-fifth(五分之一) three-fifths(五分之三)
one-hundredth(百分之一) three-hundredths(百分之三)
但是，二分之一是个例外，只能说 one half 或 a half，不可说 one-second。