Narrative tenses are used to tell a story or talk about events in the past.
Past simple: state and actions at a definite time in the past. ( Main events)
I left university in 2010.
Past continuous: Things that were going on in the past. ( Background info)
I was walking down the street when I suddenly heard a
loud noise.
Past Perfect: to make clear that one action happened before another.
I didn't have any money because I had lost my wallet.