simple past+past continious

Regular verbs: verb +ed (watch: watched)
Irregular verbs: change (come: came -go: went)
To be
Was (I,he,she,it) singular
Were (they,we,you) plural
Interrogative:
Did +S+V ( inf ) + (O) Did you get that?
Yes, we did.
To be +S + adj? Were you here?
Yes, we were.

Negative:
S +Did +Not +V (inf)+ (O) they did not come
S+ To be + Not + adj they were not here yesterday


When we use it ?
Action that began and ended in the past.
With: yesterday, last, in 1920, when I was young

S+ To be (simple past)+V+ ing
Interrogative
To be + S+ V+ ing were you listening?
Yes , I was
Negative
S+ To be +not +V+ ing they were not listening

When we use it?
Repeated actions in the past but the time is not specified.
Express an action that was improgress at a certain point or at a certain time in the past
Ex: when she was in KOREA, she was climbing hills
Two or more actions that happened simultaneously in the past.
Ex: she was shopping while he was working yesterday.
An action that progress when anther past action occurred (with the use of when/ while)
ex : they were sleeping when it started to rain.