Hi! I've been learning English. - Present Perfect Continuous, every English book states that. It being dark in the room, I couldn't find my book. - "It being dark in the room" not a single book in the library I went to explains what this is. I was wondering maybe here are some English teacher that know this. I know that we live in post intellectual society so I would be very grateful if at least someon ecould explain this to me. Thank you vety much and have a great day! #grammar #english