You are grown up 我长大了,为什么是被动语态?而不是 you grow up

You are grown old?这句话为什么是被动语态? What are you going to be when you grow up?有 when为什么不用 grown, when you grow up,为什么不是when you have grown up you have already grow up、you have already grown up和you have you are a child grow up When you grow up? 亲,You are grown up now,so it's up to you to decide whether t grow up还是be grown up When are you going to be when you grow up? What are you going to be when you grow up? whaat are you going to be when you grow up What are you going to do when you grow up