Past simple and Past perfect simple

Tenses differences

Past simle: to show the most recent action

Past perfect simple: to show that something started and finished before something else in the past

Tenses explanation

Present simple

Present perfect simple

Positive: S+ verb past

She swam in the sea

Negative: S+ didn't+ verb inf

She didn't go to the park

Question: [Wh]+ Did+ S+ verb inf

Did you drink juice?

Question: Had+ S+ verb participle

Had you filmed the film?

Negative: S+ hadn't+ verb participle

We hadn't travelled to London

Positive: S+ had+ verb participle

We had played a game

Key words

Present simple: last, yesterday, ago

Present perfect simple: before, by de time