Past Perfect Simple

1. S
Past
Perfect
Simple

2. Structure (Form)
Structure
Auxiliary Verb: Had
Affirmative
Subject + Aux Verb + Past Participle
I had worked
She had slept
Negative
Subject + Aux Verb Not + Past Participle
I had not worked
She had not slept
Question
(WH Question) + Aux Verb + Subject + Past
Participle
(When) Had you worked?
(Why) Had she slept?

3. The Past Perfect Simple is
used:
S To describe an action
which was completed
before a specific point of
the time in the past.
My mom had done the
dishes by midnight.

4. S To describe an action that
was completed before
another action in the past.
S The movie had already
started when we got to the
movie theater.
NOTE: We use the Past Perfect Simple for the action that happened first
ant the Past Simple for the action which followed.

5. TIME EXPRESSIONS
Before + point in time
By + point in time
Before, After, When, By the time
Already, Ever, Never, Just