All the classmates took the difficult exam,but only _____of them passed.(fifth)

分类: 作业答案 • 2021-12-28 11:32:35

问题描述：

All the classmates took the difficult exam,but only _____of them passed.(fifth)
fifths可以吗?

答

此处的fifth 相当于one fifth of 意思是五分之一,所以不能换成fifths ,当分子大于1时,fifth 用作fifths