1. PRESENT PERFECT TIME EXPRESSIONS PRESENT PAST PRESENT PERFECT
Something happened at an unspecified time in the past
Ex. I met him before
I have been to London
Ever, never, once, before, so far, already, yet (at the end of a sentence), recently, lately, so far, in the last days/week/month
Actions happened recently that have a connection with the present
Ex. Mark is sad because his cat has died
Today, this week/year/month
Repetition of an activity
Ex. I have called him 3 times!
Once, twice, three/many/several times
An action we expected but it has not happened
Ex. I haven’t done my homework yet
PRESENT
PAST
PRESENT PERFECT
Present Perfect links past and present
It expresses the effect of the past on the present