POINTS IN TIME
since
Who has she been seeing?
She's been seeing a guy from work.
results / how many times
for
I've made eight vases and two bowls.
PRESENT PERFECT CONTINUOUS
PERIODS OF TIME
ongoing / repeated activities
I've been going to a pottery class.
How many times have they gone out together?
What things have you made so far?
What have you been doing lately?
They've been out three or four times.
PRESENT PERFECT
in (negatives)
