AFIRMATIVE SENTENCE | (Subject + had + been + verb + -ing) |
NEGATIVE SENTENCE | (Subject + had + not + been + verb + -ing) |
QUESTION SENTENCE | (Had + subject + been +verb +ing?) |
It is used for:
Examples:
Sam was very tired after work. He had been running.
Suddenly, my car stopped running. I was not that surprised. It had not been running so well.
Had John been drinking before the party?
I had been working in that company since 2012 before I changed jobs.
I had been doing exercise before I saw you, which is why I was so tired.