PAST SIMPLE VS PAST PERFECT The past perfect tense is a verb form used

to refer to a past action that occurred

before another past action.

PAST PERFECT

The past simple is used to indicate that an

action or series of actions were completed

in the past.

The past perfect is used to indicate that an

action occurred before another past

action. This sentences often have a clause

in the simple past to indicate that one past

action occurred before another.

Examples:

We watched a movie, ate popcorn, and

drank cola.

Andrew had worked at the company for five

years before he quit.

Subject+had+past participle+complement

Postitive structure:

I had studied English before I traveled.