Actions that started in the past and continue now, or recently stopped with a present result
Subject + have/has been + verb-ing
Subject + have/has not been + verb-ing
Have/Has + subject + been + verb-ing?
💡 Use for/since for duration/start time; stative verbs rarely use continuous (know, love).
✓I've been studying for three hours.
✗I studied for three hours (if still studying).
Use continuous for ongoing duration.
✓She's been running; she's sweaty.
✗She has run; she's sweaty.
Present evidence of recent activity uses continuous.
✓Have you been waiting long?
✗Do you wait long?
Use have/has been for duration to now.