The food is prepared,cooked and served by the street kids.为什么be+prepared?不是加ing?
问题描述：
The food is prepared,cooked and served by the street kids.为什么be+prepared?不是加ing?
答
很明显的被动语态,即be done结构,sth.be done by sb.
doing通常表主动,done表被动
记住这点就很容易了啊
不懂就追问呐~