Past perfect

 Past perfect

The past perfect, also called the pluperfect, is a verb tense used to talk about actions that were completed before some point in the past.

Example: 

We were shocked to discover that someone had graffitied “Tootles was here” on our front door. We were relieved that Tootles had used washable paint.

So what’s the difference between past perfect and simple past? When you’re talking about some point in the past and want to reference an event that happened even earlier, using the past perfect allows you to convey the sequence of the events.