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PRESENT PERFECT CONTINUOS (use (to say how long, to talk about a recent…
PRESENT PERFECT CONTINUOS
use
to say how long
to talk about a recent action which might not be finished
when the action is more important
to explain the "side efferct" of an activity
structure
affermative
HAVE/HAS
-ing form of the verb
sublject
BEEN
nagative
HAVEN'T/HASN'T
sublject
-ing form of the verb
BEEN
questions
HAVE/HAS
sublject
-ing form of the verb
BEEN
when the action is started in the past but is continuing in the present
we can't use it
to talk about quantities
when the verb doesn't accept the -ing form
when the action is started and finished in the past but we wanna evidence the activitiy's duration