Attention: Iím not a teacher.
There are some words concerning the matter in question.
I have worked in this company for ten years. (The fact is emphasized.)
I have been working in this company for ten years.(The process is emphasized.)
The Present Perfect denotes completed action connected with the present.
The Present Perfect Continuous Inclusive is used to denote an action which began in the past, has been going on up to the present and is still going on.
The Present Perfect denotes a completed action while the Present Perfect Continuous there is an implication of incompleteness
He has made some experiments.
He has been making experiments.
I have worked at the problem for several months.
We have been working and working at the problem for months and I don/t think we are likely to solve it.
- For Teachers