What Is Past Perfect Continuous?
The past perfect continuous tense talks about a continuous action that happened in the past and finished in the past.
Negations are made with the help of 'not placed between 'had' and 'been.'
I had been running for an hour when Sally called. →
I had been working for three years when finally I got promotion. → I had
We use the past perfect continuous to talk about something that started in the past and continued for some time in the past and finished in the past.
I was exhausted because I