Young people usually have more e________ than old people .

题目

Young people usually have more e________ than old people .
刚才在energY在有道词典上查了复数是刚才在energies.

答案

energy作“能力”解时通常用复数形式.
作“精力”及“能量”解时是不可数的,用单数形式.
这道题是“精力,能量”的意思.所以不能用energies.
例1.He brought new energy to the science department.
他为科学部门带来了新的能量.
例2.We hope you will call forth all your energies in doing this work.
我们希望你们做这项工作时全力以赴（能力）.