1. PAST SIMPLE : FORMPAST SIMPLE : FORM
Affirmative: Regular verbs: S + V+ed
Irregular verbs: S + V (2nd
column of the list)
Example: Office workers looked out of the window.
Example: He made a quick decision.
Negative: S + didn't + V.
Example: She didn't speak to Julia.
Interrogative: Did + S + V ?
Yes, S + did.
No, S + didn't.
Example: Did you lose your keys?
Yes, I did.
No, I didn't.

2. PAST CONTINUOUS : FORMPAST CONTINUOUS : FORM
Affirmative: S + was / were + V+ing
Example: They were doing their homework.
Negative: S + wasn't / weren't + V+ing
Example: Tom wasn't talking on the phone.
Interrogative: Was / Were + S + V+ing
Yes, S + was / were
No, S + wasn't / weren't
Example: Were you doing an exam?
Yes, we were.
No, we weren't.

3. PAST SIMPLE and PAST CONTINUOUS (USE)PAST SIMPLE and PAST CONTINUOUS (USE)
6 o'clock p.m. 8 o'clock p.m.
I was doing my homework when the telephone rang.
Past Continuous: longer action.
Past Simple: shorter action.
While I was doing my homework, the telephone rang.
We use when before past simple.
We use while before past continuous.
7 o'clock p.m.