Переделать предложения из активного залога в пассивный залог можно следующим образом:
An expert is restoring the antique car.
- The antique car is being restored by an expert.
Steven Spielberg has directed a lot of successful films.
- A lot of successful films have been directed by Steven Spielberg.
The judge has fined him £300.
- He has been fined £300 by the judge.
A number of reporters will meet the professor at the airport.
- The professor will be met by a number of reporters at the airport.
A famous designer is going to redecorate the President's house.
- The President's house is going to be redecorated by a famous designer.
The Romans founded Bath in the first century AD.
- Bath was founded by the Romans in the first century AD.
A nightmare woke Mary up.
- Mary was woken up by a nightmare.
The Muslims celebrate Ramadan.
- Ramadan is celebrated by the Muslims.
Van Gogh painted the Sunflowers.
- The Sunflowers were painted by Van Gogh.
Astronauts are exploring space.
- Space is being explored by astronauts.
They kill elephants for ivory.
- Elephants are killed for ivory.
Homer wrote the Iliad.
- The Iliad was written by Homer.
People chop down a lot of trees every year.
- A lot of trees are chopped down every year.
The government will introduce new measures against crime.
- New measures against crime will be introduced by the government.
Someone has burgled Ann's house.
- Ann's house has been burgled.
She offered me a cup of tea.
- I was offered a cup of tea (by her).
They check passports at Passport Control.
- Passports are checked at Passport Control.
A million people visit the cathedral every year.
- The cathedral is visited by a million people every year.
Someone has stolen Mike's bicycle.
- Mike's bicycle has been stolen.
They might have arrested the escaped prisoner.
- The escaped prisoner might have been arrested.
They should have provided more food at the reception.
- More food should have been provided at the reception.
They ought to warn the public about him.
- The public ought to be warned about him.
They could have written the answers more clearly.
- The answers could have been written more clearly.
The ancient Greeks built the Acropolis.
- The Acropolis was built by the ancient Greeks.
They put fresh flowers in the hotel rooms every day.
- Fresh flowers are put in the hotel rooms every day.
The mechanic has repaired the car.
- The car has been repaired by the mechanic.
The bomb destroyed the building.
- The building was destroyed by the bomb.
Каждое предложение было переделано так, чтобы подлежащее активного залога стало дополнением пассивного залога, а глагол был преобразован в соответствующую форму пассивного залога.