是do some exercise 还是do some exercises; 是play sport还是play sports

问题描述:

是do some exercise 还是do some exercises; 是play sport还是play sports

是do some exercise
是play sports或者do sports

do some exercise
exercise
1.不可数名词.(身体或脑部的)活动,锻炼,运动.eg.I don't get much exercise sitting in the office all day.
2、可数名词.(保持健康或培养技能的)一套动作,训练活动,练习.eg.breathing/stretching exercises.
所以,exercise既是可数名词又是不可数.
play sport
sport既可作为可数名词,又可作为不可数名词.
可数:1.某项体育活动,如water sports(水上运动)等;
2.专业用语:突变,芽变.
不可数:1.泛指体育运动,如:
I like sport very much.
我很喜欢体育运动.
2.娱乐;消遣,如:make sport of sb
开某人的玩笑