recent events without a definite time given, events with result in the present, state verbs and habitual action which lasts up to the present
I've just seen a ghost! Jim has had three car accidents. I've twisted my ankle. I've lived here for the past ten years. I've been jogging every morning for the last month.
activity which is not finished or last until now, emphasise duration, recently finished or repeated activity,
I've been waiting for you for three hours. I've been cleaning the house but I still haven't finished. I've been writing letters all morning. I've been running. That's why I look hot. I' ve been taking French lessons this year.
