Change into negative: I washed my face in the morning.
didn't wash
Change into negative: They had an English lesson yesterday.
didn't have
Change into negative: The boy played computer games all yesterday.
didn't play
Change into negative: I had a new phone yesterday.
didn't have
Change into negative: The woman walked in the park.
didn't walk
Change into negative: The man cleaned the park.
didn't clean
Change into positive: They didn't wash their hands.
They washed their hands.
Change into positive: We didn't know the answer.
We knew the answer.
Change into positive: I didn't clean my room.
I cleaned my room.
Change into negative: He looked at the window.
didn't look
Change into positive: They didn't have any problems.
They had problems.
Change into negative: We had two cats last year.
didn't have
Change into negative: She had brown hair last year.
didn't have
Change into positive: She didn't have a doll.
She had a doll.
Change into negative: The teacher asked me a question.
didn't ask
Change into positive: I didn't answer all the questions in the test.
I answered all the questions in the test.
Change into positive: He didn't have any friends at school.
He had friends at school.
Change into negative: He answered his phone very fast.
didn't answer
Change into positive: She didn't call me yesterday.
She called me yesterday.
Change into negative: I talked to my best friends yesterday.
didn't talk
Change into positive: We didn't stay in the hotel last holiday,
We stayed in the hotel last holiday.