Continues Past Tense

Active Formula:

S + (was/were) + Ving + O
Eg: I was writing letter.
Eg: He was playing cricket.
Eg: We were working last Saturday.
Eg: Sandeep was driving that time.

Negative Formula:
S + (was/were) + not + Ving + O
Eg: I was not writing the latter.
Eg: He wasn't paying the cricket.
Eg: We were not working last saturday.
Eg: Sandeep wasn't driving that time.

Questions Formula:
(Was/Were) + S + Ving + O?
Eg: Was i writing the letter?
Eg: Was he playing the cricket?
Eg: Were we working last Staturday?
Eg: Was Sandeep driving that time?

Questions Not Formula:
(Was/Were) + S + not + Ving + O?
Eg: Was i not writing the letter?
Eg: Was he not playing the cricket?
Eg: Were we not working last Staturday?
Eg: Was Sandeep not driving that time?

LEGENDS:
S: Suject
V: Verb
O: Objecct