What Had Already Happened
Past Perfect
The past perfect expresses an action that had finished before another action took place in the past. The past perfect is often used to provide reasons for making a decision in the past.
Example:
Had you discussed the allocations with the on site manager before production began?
I had already created my production plan before the crisis.
Had you calculated the true production potential of the plant before starting production?
Positive Form:
Subject + had + past participle + (object(s))
I had already created my production plan before the crisis.
Negative Form:
Subject + had + not + past participle + (object(s))
Question Form:
(Question Word) + have + subject + past participle?
Had you calculated the true production potential of the plant before starting production?