Walking is good exercise?从这句中找出主语,谓语,表语,宾语,定语,状语.

问题描述:

Walking is good exercise?从这句中找出主语,谓语,表语,宾语,定语,状语.

分别是:
walking(主语)
is(表语,无谓语)
good(定语)
exercise(宾语)
无状语