The patient is operated on by the doctor.
The car is driven.
The cake is eaten.
The light is turned off.
The bus was driven yesterday.
The operation was finished.
The television was turned off.
The books were read.
The clothes were bought.
The car is being driven.
Cars were driven on Sundays.
The game is played.
The game was played yesterday.
The game was played every Saturday.
The game will be played tomorrow.
The game is being played today.
The game was being played.
The game will be being played tomorrow.
The game has been played.
The game had been played.
The shirts are bought.
The shirts were bought yesterday.
The shirts were bought every Tuesday.
The shirts will be bought tomorrow.
The shirts are being bought by the women.
The shirts were being bought quickly.
The shirts have been bought.
The shirts had been bought.
The letter is written.
The letter was written yesterday.
A letter was written each week.
The letter is being written on blue paper.
The letter was being written with a red pen.
The letter will be written tomorrow.
The letter has been written.
The letter had been written.