h how often does he exercise?how often do he exercise?区别在哪
问题描述：
h how often does he exercise?how often do he exercise?
区别在哪
答
exercise 有两个意思，
1、动词，锻炼
how often does he exercise? 就是作动词
2、名词，练习
how often do he exercise?就是作名词，do exercise做练习
答
how often does he exercise?他多久锻炼一次?
how often do he exercise?病句
所以二者无法比较的,如果硬要谈区别的话,那就是第一句是正确的,第二句是有语法错误的