Daca cautai pe TPU, nu ramaneai atata vreme fara raspuns, se satura TPU-istii sa raspunda de n ori la aceiasi intrebare...
http://www.tpu.ro/......u-funda-p/
Uite cateva site-uri : Daily Grammar, British Council, LibriVax, OneStopEnglish, Many Things, Cambridge / Interchange Arcade, Grammar Bytes, Grammar HandBook.