I exercised on Monday. (to negative)
I didn´t exercise on Monday.
You stayed home last weekend. (to negative)
You didn´t stay home last weekend.
Anna visited Arequipa two years ago.(to negative)
Anna didn´t visit Arequipa two years ago.
Peter listened to music last night. (to negative)
Peter didn´t listen to music last night.
They didn´t shop for new clothes yesterday. (to affirmative)
They shopped for new clothes yesterday.
We didn´t play videogames on Saturday. (to affirmative)
We played videogames on Saturday.
She didn´t stay out late on Saturday night. (to affirmative)
She stayed out late on Saturday night.
She played tennis last week.(to negative)
She didn´t play tennis last week.
Victor didn´t watch videos last weekend. (to affirmative)
Victor watched videos last weekend.