Simple Present exprima o actiune obisnuita, repetabila.
I go to school every day.
Present Continuous exprima o actiune in curs de desfasurare in momentul vorbirii.
I am writing this sentence here, for you.
Present Perfect exprima o actiune inceputa in trecut si care continua sau are rezultate in prezent.
I have written above some sentences related to Simple Present and Present Continuous.
Present Perfect continuous exprima o actiune inceputa in trecut, care continua si in prezent si poate si in viitor.
I have been living in my house for almost 40 years.