exercise的三种用法（当动词、不可数名词、及名词时的用法,并举例说明
问题描述：
exercise的三种用法（当动词、不可数名词、及名词时的用法,并举例说明
答
动词，Your weight is increasing, you should exercise more. ， 不可数名词，Doing exercise is good for our health， 可数名词， We have many exercises to do。 动词是练习。练习，习题（可数）操（可数） 锻炼（不可数）
答
1 What goes on inside your brain when you exercise?
当你锻炼时你的大脑内部酝酿着什么?
2 Good health depends upon good food,exercise,and getting enough sleep.
健康依赖于良好的食物、运动和充足的睡眠.
3 He always does some exercises in the morning.他经常早上作练习