past simple and past continuous

Assalamualaikum..

Hello friend.. Today i learned about past simple and past continuous..

PAST SIMPLE -> is an action in the past taking place once, never, several times. It can only be used for taking place once after another or in the middle of the another action.

 PAST CONTINUOUS -> is an important tense in English. We use it to said what we were in the middle of doing at a particular moment in the past.

• Use the Past Continuous to indicate that a longer action in the past was interrupted. The interruption is usually a shorter action in the Simple Past. Remember this can be a real interruption or just an interruption in time.
  
  Examples:
  I was watching TV when she called.
  When the phone rang, she was writing a letter.
  While we were having the picnic, it started to rain.
  What were you doing when the earthquake started?
  I was listening to my iPod, so I didn't hear the fire alarm.
  You were not listening to me when I told you to turn the oven off.    

• the Past Continuous is interrupted by a shorter action in the Simple Past. However, you can also use a specific time as an interruption.
  
  Examples:
  Last night at 6 PM, I was eating dinner.
  At midnight, we were still driving through the desert.
  Yesterday at this time, I was sitting at my desk at work. 

To get more information, you can go to this website

'http://www.englishpage.com/verbpage/pastcontinuous.html'