Question

Como trabajan el presente perfecto y pasado perfecto en oraciones positivas y negativas

Answer 1

Presente Perfecto:
Afirmativa: sujeto + has o have+ verbo en past participle
example: They have forbiden the fights
                She has changed the oil.

Negativa: Sujeto+hasn´t o haven´t+ verbo en past participle
example: They haven´t forbiden the fights
                She hasn´t changed the oil.

Has y have traducen (Ha)

Pasado perfecto:
Afirmativo: Sujeto+ had+verbo en pasado participio
example: He had mistaken many times
               We had danced for 4 hours

Regla: El has es para he,she,it
           el have para they, we. you
           el had para todas las personas