Past Continuous & Present Continuous

     POSITIVE 

 Person/was or were/verb+ing

    

 She was playing on the computer.

     NEGATIVE

 Person/wasn't or weren't/verb+ing 

 She wasn't  playing on the computer.

    QUESTION 

Was or Were/person/verb+ing

 Was she playing on the computer? 

   POSITIVE

 Person/am or is or are/verb+ing

 Brother is listening music.

   NEGATIVE

Person/am not or isn't or aren't/verb+ing

  

 Brother isn't listening music.

   QUESTION

Am or Is or Are/person/verb+ing

Is brother listening music?