Unfinished action which started in the past and continues till now – with emphasis put on the duration of the action
Present Perfect Continuous
I (not eat) so much since I was on my cousin's wedding.
haven't eaten
I can't believe how much weight she (lose) since I last (see) her
has lost/saw
Her boyfriend (give) her some flowers recently. It (was) on Valentine's Day.
has given , was
Zenek hasn't ben on a date........................last Monday
SINCE
An action which happened at an unstated time in the past
Present Perfect
Maria (cook) dinner since early morning. She (prepare) 2 dishes so far
has been cooking/has prepared
This song (be written) by an artist who (live) here many years ago
has been written / lived
It's the twentieth time Zenek (fall) in love.
has fallen
She's been daying to meet Justin ......................many years
FOR
An action which happened at a stated time in the past
Past Simple
………………...you …………..(study) all night? It seems that you are very well prepared fot the test.
have you been studying
Justin Bieber (only had) 2 girfriends. He's not a player like Zenek.
has only had
When Hermegilda (break up) with him he (be) devastated
broke up, was
SINCE
Two actions in the past that happened one after another
Past Simple
How many girlfriends (have) Zenek in his life
has Zenek had
Your English (improve) a lot. The last time we (speak) it (be) not as good as it is now.
has improved / spoke /was
How long (you have) a toothache
have you had
Zenek has been looking for the love of his life..............................................a week.
FOR
An action which happened in the past and can be repeated.
Present Perfect
She (read) a book and (write) a review
has read/ has written
He (lose) a lot of hair since he (sart) working at school. It's a very stressful job
has lost/started
She (study) grammar for the whole weekend and she still (not learn) everything
has been studying, hasn't learned
She hasn't failed a test ever...................she broke up with Zenek.
SINCE