Affirmative :
Form : s+ was /were + v+ ing
I / he/ she/ it =Was
They / you/ we = were
I Was slipping.
We were playing football
.
Negative :
Form :s+ was/were +not +v + ing
I/he/she/it = wasn't
They / you/ we = weren't
Was _ not = wasn't
Weren't _ not = weren't
I wasn't slipping.
We weren't playing football.
Question :
Form: was+were+s+v+ing
I/he /she / it = Was
They /you / we = were
Was he working?
Yes, he was
No, he wasn't
Were you playing football?
Yes, you were
No, you weren't