This is correct?
When I watched a movie, John was reading a book.
When I studied, Bob was eating lunch
When it snowed, I was home reading a book
how about both present progressive. What's the difference
When I was watching a movie, John was reading a book.
When I was studying, Bob was eating lunch
When it was snowing, I was home reading a book
A state: When I was a boy, it felt as though the Summer Holidays went on for ever.
An event: When the clock struck twelve, her coach turned back into a pumpkin.
An action: When the stranger entered the room, everyone looked up.