Salut!
Present perfect exprima:
- actiuni incepute si incheiate in trecut, al caror moment nu este precizat ( ex. Am vazut acest film.-I have seen this film);
- actiuni incepute in trecut care au rezultat in prezent ( ex. Am invatat aceasta poezie. Acum o stiu pe de rost. - I have learnt this poem. I know it by heart.);
-actiuni incepute in trecut,care cotinua in prezent si pot continua si in viitor ( ex. Locuiesc in acest oras de 5 ani.-I have lived in this town for five years.)
Present perfect continuous exprima actiuni incepute in trecut,care continua in prezent sau s-au incheiat cu putin timp de momentul vorbirii. (ex. Astept autobuzul de 3 ore.-I have been waiting for the bus for three hours.// Sora mea a cantat la pian toata dimineata.-My sister has been playing the piano all morning.)
Past perfect exprima actiuni incepute si incheiate in trecut, inaintea unei alte actiuni trecute. (ex. Ploaia incepuse inainte ca eu sa vin acasa.-The rain had started before I came home.)
