Past Perfect

 

Positive		Negative
I	'd seen the film before.	I	hadn't seen the film before.
You		You
He		He
She		She
It		It
We		We
They		They
Contractions: I'd = I had I hadn't = I had not

Questions			Positive answer			Positive answer
Had	I	seen it before?	Yes,	I	had.	No,	I	hadn't.
	You			You			You
	He			He			He
	She			She			She
	We			We			We
	They			They			They

(Pluscuamperfecto = había...)

Use the past perfect when you are already talking about the past, and want to talk about an earlier past action.
When I woke up the garden was all white. It had snowed in the night.

Make the past perfect with had / hadn't + past participle.

The past perfect is the same for all persons.

!!!!
Be careful: I'd can be I had or I would.