exercise与exercises有什么区别

exercise与exercises有什么区别 exercise 与exercises 的区别及用法 exercise 与exercises 的区别及用法 do exercises与take exercise二者区别,意思 exercise与exercises区别,两者联系,要怎么用? do exercise和do exercises有什么区别? 英语：do exercise 和do exercises 有什么区别? exercise和exercises的用法 Exercise和exercises什么区别? do more exercise与do more exercises分别是什么意思啊,哪个是多做运动? exercise有复数形式吗?I keep healthy by doing some exercises.这句话对吗? 关于exercise,exercises的用法We do morning ____everymorning.And we do _____after school.A.exercises; exercises B.exercises; exercise C.exercise; exercises并请翻译一下 take more exercise还是take more exercises 锻炼是take exercises 还是 take exercise exercise和exercises的区别?请举例 take much exercises还是take much exercise 如何区分exercise,exercises,practice,activities,activity? exercise什么时候加sdo morning exercise还是do morning exercises