Expressing continuing action in L'Imparfait (imperfect tense)

Look at these sentences using L'Imparfait:

Note that L'Imparfait is also the tense to express continuing actions in the past, or actions seen in their progression, with no clear beginning or end.

This usage is similar to the Past Continuous (or Past Progressive) in English (i.e. I was doing, he was sleeping).
See also Être en train de : expressing ongoing actions in the past.

Other uses for L'Imparfait:

Expressing habits or repeated actions in L'Imparfait (imperfect tense)
Describing and expressing opinions in L'Imparfait (imperfect tense)

See also how to combine L'Imparfait and Le Passé Composé: Using Le Passé Composé on its own or with L'Imparfait

And to see how to conjugate in L'Imparfait: Conjugate regular verbs in L'Imparfait (imperfect tense) and Conjugate être in L'Imparfait (imperfect tense)