Past progressive verbs are also called past continuous verbs. They show continuing action in the past.
Every single verb has three simple tenses and three perfect tenses.
Each of those tenses can be made into a progressive/continuous form.
Progressive verbs are not another verb tense, but are more like an extra form of each of the tenses.
They show that the verb is still happening.
Depending on whether you like to call them progressive or continuous, you can use these two ways to remember what they mean:
The action is continuing to happen, so it is a continuous verb.
The action is still in progress, so it is a progressive verb.
All progressive verbs are formed with a form of the verb be (am, is, are, was, were, been, being) and the verb's present participle.
Present participles are the forms of the verb that end in ing.
There is a very easy recipe for making these verb forms.
The present participle is the form a the verb that ends in ing
|were/was||+ Present Participle||Past Progressive|
|was||learning||I was learning.|
|were||learning||We were learning.|
|was||winning||Mark was winning.|
|were||winning||The boys were winning.|
|was||graduating||My sister was graduating.|
|were||graduating||The students were graduating.|
|was||practicing||The singer was practicing.|
|were||practicing||The choirs were practicing.|