Since problem ang

Since problem ang

Witam,
dlaczego nie może być zdania np. I haven't been there since two years?

"When referring to time, "since" needs to refer to a paricular time."

"Since" musi odnosić się do konkretnej daty.

Łopatologicznie:
since - OD
for - PRZEZ
I have not been to US since 2010.
I have not been to US for two years.

Na przyszlosc - ang.pl dosyc fajna stronka.

http://www.ang.pl/gramatyka/czas/present_perfect/for_since