SIMPLE PAST
These sentences are in affirmative. See how they transform to negative.
AFFIRMATIVE
to
She cooked this soup.
She didn’t cook this soup.
We played the piano.
We didn’t play the piano last night.
He traveled to France in 1999.
You went to the cinema last week.
NEGATIVE
He didn’t travel to France in 1999.

You didn’t go to the cinema last week.
I bought the newspaper this morning.
I didn’t buy the newspaper this morning.
It flew very high in the sky.
It didn’t fly very high in the sky.
They smoked a pack of cigarettes.
They didn’t smoke a pack of cigarettes.