Bom Dia eu gostaria muito de sua ajuda para entender o Present Perfect.

Com a tradução destas perguntas e frases abaixo creio que entenderei melhor.

Have you worked hard lately?

Had they already painted the house when you arrived?

Had you been working out when she arrived?

She had been trying to hide this secret when you found out the truth.

Mais alguma outra dica será muito bem vinda.

Obrigado.