1. The waiter brings me this dish.

-> This dish is brought to me (by the waiter).

2. Our friends send these postcards to us.

-> These postcards are sent to us(by our friend).

3.Their grandmother told them this story when they visited her last week.

-> This story was told to them(by their grandmother) when they visited her last week.

4.Tim ordered this train ticket for his mother.

-> This train ticket was ordered for Tim’s mother.