• Present Continuous

• 
• Use the present continuous for actions/events that are happening at the present time (now).

  
  

  subject + be + present participle
  

  Tom is riding his bicycle.

  
  

  Use the present continuous with not for actions that are not happening at the present time (now).

  
  

  subject + be + not + present participle
  

  It is not raining now./It isn't raining now.

• Alexis waiting at a traffic light.	The studentsarelearning a new language.
  The wateris notboiling.	Theyaren'twalking on the sidewalk.

• Be careful! Always use not between the verb "be" and the present participle.

  She is not watching TV.

   ̶S̶h̶e̶ ̶n̶o̶t̶ ̶i̶s̶ ̶w̶a̶t̶c̶h̶i̶n̶g̶ ̶T̶V̶.̶

 Source : Alison