Simple Past-Positive/Negative

I went to the zoo last weekend.

I didn't go to the zoo last weekend.

I had a bicycle when I was a child.

I didn't have a bicycle when I was a child.

I watched a film an hour ago.

I didn't watch a film an hour ago.

My dad cooked a nice meal last weekend

My dad didn't cook a nice meal last weekend

My sister lived in London two years ago

My sister didn't live in London two years ago

My sister was afraid of the dark.

My sister wasn't afraid of the dark.

People used computers in the past

People didn't use computers in the past

The monkey climbed up a tree.

The monkey didn't climb up a tree.

Tom talked to his teacher yesterday.

Tom didn't talk to his teacher yesterday.