For and since with the present perfect
FOR
SINCE
FORMULA
Have/has + past participle + for
Have/has + past participle +
since
WHEN
A period of time
Followed by a specific time
|---------------|.
|------------- -->
EXAMPLES
We have lived in Den Bosch for 2 years
and then we moved to Oss.
I’ve loved football since I was
four!
WHY?
You don’t live in Den Bosch any more
(for 2 years)
You still love football
DIFFERENCE
I’ve been a fan of Katy Perry for 5 years
(duration=5 years)
I’ve been a fan of Katy Perry
since 2009 (starting point =
2009)