Syntax
Start, stop or continue a process
To describe the 
beginning, end or continuation
of a process we normally use the form 
verb
+ -
ing.
  - I started walking at nine o'clock. 
 
  - She stopped crying and washed her face.
  
 
  - Keep going until
    you reach the main square. 
 
Other verbs that follow this pattern are start,
  begin, commence, stop,
  finish, quit, give
  up, continue, carry
  on, keep (on)
  and go on.