1) Past continuous is used for actions in process a certain moment in the past.
- What were you doing at 9.30 yesterday?
- In 1995 we were living in London.
- He was playing tennis at 11 o'clock.
Positive and Negative
2) The construction of a past continuous is similar to the present continuous tense. The verb "be" in the past tense and the -ing form of a verb.
|Where are you living?||Where were you living in 1999?|
|She is working.||She was working a 11 o'clock last Monday.|