do exercise 和do exercises的区别

do exercise 和do exercises的区别 take exercise和take exercises的区别 do exercise和do exercises的区别 exercise 和 exercises的区别?do morning exercises是做早操?do morning 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的区别? Exercise和exercises什么区别? take exercise与do exercise的区别 exercise的用法,Do you do eye exercises every day?这句话中的“exercise do moring exercises 和 do some exercise 为什么一个加s 一个不加 exercise和exercises在这里的区别英语 more exercise 和 more exercises的区别 速求!