Past perfect tense

Affirmative

Rule: Subject + had+V3+ object.

Examples: we had read books.
She had read books.

  Negative

Rule: Subject+ had+not+ v3+ object.

Examples: she had not read books.
They had not read books.
Singular = had not
Plural = had not

Interrogative

Rule: Had+ subject+ v3+ object+?

Examples: Had you liked me?
Had she liked me?

Wh Family

Rule: wh+had+subject+v3+object+?

Examples: why had you liked me?
When had she played cricket?