past continuous 

• we usually the present continuous to talk about actions and situations that are happenning at the moment of speaking 
• we also use the present continuous to talk about future plans, especially if the time and the action have already been arranged 
• in this case, we normally use a future time

for example 

1.     I was listening to music 
2.     He was playing with his sister 

affirmative

• we use the past continuous to talk about what was happening at a certain time or moment in the past 

affirmative form 

• I/He/She/It             was sitting 
• You/We/They        were sitting

negative form 

• I/He/She             was not playing 
• You/We/They      were not playing 

contracted 

1. wasn`t
2. weren`t

interrogative form

• was     I/He/She
• were   You/We/Are