have/has + been + verb-ing
Positive Sentences
They have been waiting here for a long time.
Negative Sentences
They have not been waiting here for a long time
Questions
Have you been playing video games all day?
Yes, l have.
No, l haven’t. l’ve been sleeping all day
How Long?
Duration: how long something has been happening. Usually, do this in the Present Perfect Continuous tense:
They have been studying English for two months.
Mary has been working here since she was 22.
I have been learning to play the piano for a while.
I have been going to Emily Carr University in Vancouver for three years.
I have been playing instruments since I was a child
