people use knivers to cut things把这句话改成被动语态怎么改
问题描述：
people use knivers to cut things
把这句话改成被动语态怎么改
答
Knivers are used to cut things (by people).
by people可省略。
答
Knivers are used by people to cut things.
答
knives are used to cut things by people.