Passive voice + PRESENT
the windows / open by my mother
the windows are opened by my mother
the shoes / buy
the shoes were bought
the news / tell
the news isn't told
the house / build
the house wasn't built
PAST:
The postman delivered the letter.
The letter was delivered by the postman.
the song / sing / by the singer
the song is sung by the singer
the car / wash
the car was washed
these computers / sell
these computers aren't sold
dinner / serve
dinner wasn't served
PRESENT:
They took the books to the library.
The books were taken to the library.
the shops / close
the shops are closed
the rubbish / throw away
the rubbish was thrown away
the car / stop
the car isn't stopped
the cats / feed
the cats weren't fed
PAST:
They didn't spend the money.
the money wasn't spent
the food / eat
the food is eaten
the letter / send
the letter was sent
the tables / clean
the tables aren't cleaned
the table / set
the table wasn't set
PRESENT:
They plant trees every Monday.
Trees are planted every Monday.
The secretary prints the documents.
the documents are printed by the secretary.
He read the book.
the book was read (by him)
They don't turn off the lights when they leave.
the lights aren't turned off when they leave.
The parents didn't pick up the children.
the children weren't picked up by their parents.
Question in the past:
Did the teacher give the marks?
Were the marks given by the teacher?