Describing activities that took place in the past
(Adverb). Something happening
at the same time.
Continuing to exist, happen or progress.
The children were marching
the boy was selling snacks.
The baby was sleeping
the telephone rang.
John was jumping the rope
he fell and broke his leg.
Past continuous form
When and While
introduces a second action. The second action interrupted the on going action.
Use the simple past with the when clause and the past continuous for the ongoing
and the past continuous with two actions in the same sentence to
express the idea that both actions were happening at the same time. The actions