We form the present perfect continuous with: has/have been + ing*(present participle)
Statement: I have/I’ve been studying all night and I’m tired now.
Question: How long have you been waiting?
Negative: He has not/hasn’t been waiting for a long.
Note:
- She has been cleaning the windows. The action may or may not be finished.
- She has cleaned the windows. The action is finished.
The verbs live and work can be used in either present perfect simple or present perfect continuous with the same meaning.
- We have lived in London for twenty years.
- We have been living in London for twenty years.
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