They have been turning the TV on and off all evening.
They have been taking lots of photos using Dad's camera.
They have been playing the cassette recorder really loudly.
They have been pulling the vacuum cleaner up and down the stairs.
They have been running backwards and forwards to the fridge non stop.
They have been making pancakes for the last two hours.
Trebuie să folosești present perfect continuous pentru a arăta o acțiune ce a început în trecut și continuă în prezent.
HAVE/HAS+BEEN +VERB +ING