用法很灵活
1、可以用主动形式
(doing) sth + benefit + sb/sth
例句：
(Taking) exercises benefits us.
2、可以用被动形势
sb/sth + benefit from/by + (doing) sth
例句：
We benefit by （taking） daily exercises.
3、也可以用benefit的名词形式词组
(doing) sth is + of benefit + to sb(sth)
例句：
(Taking) daily exercises will be of benefit to us.