Question

Trabalho sobre o presente perfeito

Answer 1

The present perfect is used to indicate a link between the present and the past. The time of the action is before now but not specified, and we are often more interested in the result than in the action itself.

( o presente perfeito é usado para indicar uma conexão entre o presente e o passado.)

formula: Affirmative
Subject to have past participle
She has visited.
Negative
Subject to have + not past participle
She has not (hasn't) visited.
Interrogative
to have subject past participle
Has she visited?