Use We use the past continuous to describe an interrupted activity which continued for a period in the past and to talk about things happening for a continuous period in the past.
to say that somebody was in the middle of doing something He was playing computer games.
for two things happening at the same time He was playing computer games while she was watching TV.
for things you were in the middle of doing when another thing happened He was watching TV when Tom arrived.
Affirmative We form the past continuous tense with the helping verb was/were + present participle (V 1 + -ing).
Was/Were V 1+Ing I You He She It was were was was going going we were going you were going they were going
Introgative We form questions by using the helping verb was/were + subject + present participle (V 1 + -ing).
Was/Were V 1+Ing Was I Were you Was he Was she Was it going? going? Were we going? Were you going? Were they going?
Negative We form the negative with the helping verb was/were + not + present participle (V 1 + -ing).
Was/Were Not V 1+Ing I You He She It was not going we were not going you were not going was not going they were not going was not going