We visited our grandparents last weekend.
didn't visit
I didn't saw her at the park.
didn't see
They went to the beach last summer.
didn't go
We didn't enjoy the movie last night.
didn't enjoy
She didn't went to the store.
didn't go
I saw the movie last week.
didn't see
They didn't plays football yesterday.
didn't play
He played tennis yesterday.
didn't play
She ate dinner at 8 PM.
didn't eat
He didn't studied for the test.
didn't study