Noi stim ca formula la Present Perfect Tense este urmatoarea:
S(subject) + have/has + Ved ( verb cu ed) / III ( sau forma a 3-ia)
1.... has come..
2..... has not/hasn't come..
3....has read....
4.... has read....
5.....hasn't/has not read....
6... has written....
7..... has not/hasn't written...
