RULES OF..
Past Simple.
I cooked cake yesterday.
I (eat) cookies before drinking the soda.
I had eaten cookies before drinking the soda.
Muzan (look) for the lillyth flower for many years.
Muzan had been looking for the lillyth flower for many years.
Luis (finish) the exam before the teacher (order) to put their pencils down.
Luis finished the exam before the teacher had ordered to put their pencils down.
I'm used to talk in past about an action that got interrupted.
Past Progressive (Continuous).
Maria & Luis finished the proyect on wednesday.
Mario (escape) the prison before the cops arrived.
Mario had escaped the prison before the cops arrived.
Paulina had been waiting for me sicne 9 o'clock
We (study) independently for 2 years before the teacher (teach) us our erros-
We had been studying indepdently for 2 years before the teacher taught us our errors.
I come before another action in past.
Past perfect Simple.
Jonathan baked oreo cookies last month
Once Mario got out his brother (arrive) with the escape car.
Laura (run) since 9 o'clock before the rain began.
Laura had been running since 9 O'clock before the rain began.
Humanity (work) on a cure for cancer for many years before scients (invent) chimiotherapy.
Humanity had been working on a cure for cancer for many years before sicentists invented chimiotherapy.
Another one of my uses is to present a past feeling.
Past simple.
Albert Einstein thought about the relativity theory.
The grass (negative grow) big enough therefore the cops found the body
The grass had not grown bigh enough therefore the cops found the body.
We (negative + even swim) for twenty minutes before we got out to eat dinner
We hadn’t even been swimming for twenty minutes before we got out of the pool to eat dinner.
I (do) my homework when the power (go out).
I was doing my homework when the power went out.
Past perfect continuous.
The government (forbid) all violent videogames last month.
The government forbade all violent videogames last month.
My brother (just + arrived) in time before my mother got angry at us fro him being late.
My brother had just arrrived in time before my mother got angry at us for him being late.
Jocelyn (believe) in her husband a lot.
Jocelyn believed in her husband a lot.
Clarissa (study) all night long for she just (learn) that her parents (take) her phone away.
Clarissa had been studying all night long for she had just learnt that her parents had taken her phone away.