PAST TENSES

PAST SIMPLE

1) To talk about habitual or usual actions.
2)To talk about actions that started and finished at a specific time in the past. 
3) For past states.
4)To describe a thing which happened repeatedly in the past.

Ex: I went to the cinema last summer.

Forms:

Affirmative form

I/You/He/She/It/We/They + verb –ed or irregular verbs
Ex: I went to the cinema.

Negative form
I/You/He/She/It/We/They + did not + verb (infinitive)
I didn't go to the cinema.

Interrogative form
Did + I/You/He/She/It/We/They + verb (infinitive) ?
Ex: Did you go to the cinema?


PAST CONTINUOUS

1)To talk about an action in progress at a specific moment in the past. 2) To indicate that a longer action was interrupted in the past.
3) To express the idea that two actions were happening at the same time.

Ex: He was playing football.

Forms:
Affirmative form

I/ He/She/It + was + verb-ingEx: He was playing football.You/We/They + were + verb-ing
Ex: They were playing football.Negative form

Negative form
I/ He/She/It + was not + verb-ing
Ex: He wasn’t playing football.
You/We/They + were not + verb-ing
Ex: They weren’t playing football.

Interrogative form
Was + I/He/She/It + verb-ing?
Ex:Was he playing football?
Were + You/We/They + verb-ing?
Ex: Were they playing football?

PAST PERFECT SIMPLE

We use the present perfect simple:
1)To talk about actions which happened before other actions in the past.
Ex: After I had played, I went to the cinema.

Forms:

Affirmative form

I/You/He/She/It/We/They + had + verb (past participle)
Ex:  He had played.

Negative form
I/You/He/She/It/We/They + had not + verb (past participle)
Ex:  He hadn't played.

Interrogative form

Had + I/You/He/She/It/We/They + verb (past participle) ?
Ex:  Had you played?