past simple - past continuos

Past Simple
Examples
Where did you go yesterday?
The flight left at 8 o'clock.
They didn't come last night.
Usage
Finished past actions, definite past
Common past time expressions include:
last (week, year, night), yesterday, ago, in 1987, when I was a child.

Structure
In the positive form, for regular verbs, add an -ed to the base form of the verb. If the verb ends in -y preceded by a consonant, change the -y to -ied.For irregular verbs (most common irregular verbs).
I
You
He
She
It
We
You
They
arrived late last night. (regular verb)
came back late last night. (irregular verb)
Use the conjugated helping verb 'did' not (didn't) the base form of the verb to make negatives.
I
You
He
She
It
We
You
They
didn't go to New York last week.
Use the conjugated helping verb 'did' subject the base form of the verb in question forms.
When Did I leave
You
He
She
It
We
You
They

Past continuous
The structure of the past continuous tense is:
subject
+
auxiliary verb BE
+
main verb
conjugated in simple past tense
present participle
waswere
base + ing
For negative sentences in the past continuous tense, we insert not between the auxiliary verb and main verb. For question sentences, we exchange the subject and auxiliary verb. Look at these example sentences with the past continuous tense:

subject
auxiliary verb
main verb

+
I
was

watching
TV.
+
You
were

working
hard.
-
He, she, it
was
not
helping
Mary.
-
We
were
not
joking.

?
Were
you

being
silly?
?
Were
they

playing
football?
How do we use the past continuous tense?
The spelling rules for adding ing to make the past continuous tense are the same as for the present continuous tense.
Examples:
i was doing my homework at 5:30
jimy and susan was acting well
lina was brosing the web to get to information
jhon surfed the internet looking for e-books