do exercise用加s吗

do exercise用加s吗
do exercise用加s吗

do exercise用加s吗
1.如果exercise意思是“练习(题)”,则其为可数名词,要加s.
2.如果exercise意思是“锻炼”,则其为不可数名词,不用加s.
3.如果是do morning/eye exercises,则要加s.