Jhon does exercise three or four times对不对
问题描述:
Jhon does exercise three or four times对不对
少写了个 a week
答
加了 a week 就是对的.
exercise 作"锻炼"解时,不可数.
作"习题,作业"解时,可数.不好意思 少写了个 a week 要是加上去这个句子对吗?加上去就对了。