Past Perfect Tense
The past perfect tense is the second of the difficult tenses in English, and it’s used to talk about the past of the past! It’s a little difficult to understand so my goal here is to break it down and give a simple introduction.
Subject + Had + Past Participle Verb (3rd Verb)
I had eaten soup
Past perfect is used with past simple to express something that happened before the past simple.
I arrived after he had left.
He left first, then I arrived (both in the past)