Теория:
Study some information about the Present Perfect Continuous.
Present Perfect Continuous указывает на действие, которое началось в прошлом, продолжалось в течение некоторого времени и либо закончилось непосредственно перед разговором или все еще продолжается в момент разговора.
Например,
I have been waiting in the office for 2 hours!
We have been preparing for the test since morning.
Образование Present Perfect Continuous
have/has been + Ving
has используется только для 3 лица единственного числа
Утвердительные предложения:
I have been working
You have been working
He / she / it has been working
We have been working
They have been working
Вопросительные предложения:
Have I been working?
Have you been working?
Has he / she / it been working?
Have we been working?
Have they been working?
Отрицательные предложения:
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