Теорія:

Study some information about the Present Perfect Continuous.
Present Perfect Continuous уживається для вираження дії, що почалася в минулому, тривала де-який час та завершилася до моменту розмови або триває в момент розмови.

Приклад:
  
I have been waiting in the office for 2 hours!
  
We have been preparing for the test since morning.

Утворення Present Perfect Continuous
 
have/has been + Ving
 
has вживаємо з підметом в 3 особі однини
 
Стверджувальні речення:
 
I have been working 

You have been working 

He / she / it has been working 

We have been working

They have been working

Питальні речення:
  
Have I been working

Have you been working

Has he / she / it been working

Have we been working?

Have they been working?

Заперечні речення:
  
I have not been working 

We have not been working 

You have not been working 

He / she / it has not been working 

They have not been working