Resposta :
Resposta:
a) He has worked here for three months.
b) They have gone to Australia many times.
c) Have you ever been to Paris?
d) My family have visited me recently.
e) My parents haven't arrived yet.
A estrutura do Presente Perfect é:
Para as afirmativas: SUJEITO + PRESENTE SIMPLES DO VERBO TO HAVE + PARTICÍPIO PASSADO DO VERBO PRINCIPAL.
Para as negativas: PRESENTE SIMPLES DO VERBO TO HAVE + NOT + PARTICÍPIO PASSADO DO VERBO PRINCIPAL.
Para as interrogativas: PRESENTE SIMPLES DO VERBO TO HAVE + SUJEITO + PARTICÍPIO PASSADO DO VERBO PRINCIPAL + ?