The postman may leave my letter by the door.
My letter may be left by the postman by the door.
Every four years people elect a new president in the USA.
A new president is elected every four years in the USA.
The police caught a bank robber last night.
A bank robber was caught by the police last night.
People can open the door by pushing it.
Doors can be opened (by the people) by pushing it.
My mum has made a delicious cherry pie for dinner.
A delicious cherry pie has been made by my mum for dinner.
The workers are repairing the bridge at the moment.
The bridge is being repaired (by the workers) at the moment.
George didn’t repair my clock.
My clock wasn’t repaired by George.
My son will write some more articles about football.
Some more articles about football will be written by my son.
Sorry, we don’t allow dogs in our safari park.
Sorry, dogs are not allowed in our safari park.
Popov invented radio in Russia.
Radio was invented by Popov in Russia.
You must clean your bedroom tonight.
Your bedroom must be cleaned tonight
Hang on, my neighbor is telling an interesting story.
Hang on, an interesting story is being told by my neighbor.