When shall i use present perfect progressive intead of present perfect?
Hey, Jürgen, the present perfect continuous (= progressive) is to be used to talk about something (usually an activity) IN PROGRESS in the past until now. What makes out the present perfect continuous from the present perfect full stop is the continuity of what is happening.
Since I resumed the GG lessons two months ago I have been learning on a daily basis. Since I resumed my GG lessons two months ago I have read the daily paper on many occasions.