Past Tenses

1. Past Perfect

1.1. previous action in the past

1.2. had V3

1.3. had

2. Past Progressive

2.1. process in the past at the moment

2.2. at 5 o'clock yesterday

2.3. was,were V ing

2.4. was,were

3. Past Simple

3.1. action in the past

3.2. yesterday, ago, last, 1996

3.3. V2 ed

3.4. Did