Nível: B1

Objetivo

Usar o present perfect (have/has + past participle) para descrever experiências profissionais e mudanças recentes sem tempo específico, dominando os marcadores ever, never, just, already, yet, recently e so far.

Explicação

O present perfect liga uma ação passada ao presente. Ele é formado por have/has + past participle (particípio passado). Use have com I / you / we / they e has com he / she / it:

• I have worked with React for three years.
• She has deployed the new build.
• We have integrated the payments API.
• The team has released two features this month.

Em verbos regulares, o particípio é o verbo com -ed (deploy → deployed, fix → fixed, test → tested). Em verbos irregulares, ele tem forma própria que precisa ser memorizada: do → done, write → written, see → seen, take → taken, go → gone, make → made, have → had, be → been.

Negativas usam have not / has not (contrações haven't / hasn't) + particípio: I haven't used Kubernetes yet., She hasn't migrated the database.

Perguntas invertem have/has com o sujeito: Have you ever worked with TypeScript?, Has the team shipped the new release? Respostas curtas repetem o auxiliar: Yes, I have. / No, I haven't. — sem repetir o particípio.

O present perfect aparece em dois usos principais no trabalho:

1. Experiências de vida e carreira, sem dizer quando aconteceu:

• I have led a team of five engineers.
• Have you ever integrated a payment gateway?
• We have never used this framework before.

Marcadores comuns: ever, never, before, for, since.

2. Mudanças recentes cujo efeito no presente importa mais do que o horário exato:

• We have just deployed the fix.
• The team has already released the new version.
• Have you migrated the data yet?
• Recently, we have reduced the response time by half.
• So far, the build has been stable.

Marcadores comuns: just, already, yet, recently, so far, in the last few weeks.

Regra de ouro: quando a frase traz um tempo passado fechado (yesterday, last week, in 2023, at 2 p.m.), prefira past simple: We deployed the fix yesterday. Quando não há tempo definido ou o efeito ainda vale agora, use present perfect: We have deployed the fix. Misturar os dois é o erro mais comum de brasileiros no trabalho.

Erros comuns

• Colocar tempo passado específico com present perfect: I have deployed it yesterday deve ser I deployed it yesterday (past simple).
• Esquecer o particípio: I have deploy deve ser I have deployed.
• Confundir has e have: She have fixed deve ser She has fixed.
• Colocar never/ever fora de posição: I never have seen deve ser I have never seen.
• Dizer I have 25 years sem for/since: I have been here for 25 years ou I have worked here for 25 years.
• Usar did em perguntas de present perfect: Did you ever integrated...? deve ser Have you ever integrated...?.
• Misturar auxiliares: I hasn't deve ser I haven't (I usa have, não has).
• Responder Yes, I have worked quando a resposta curta basta: prefira Yes, I have..

Prática guiada

Reescreva trocando o marcador de tempo por um equivalente do present perfect:

• I worked with Django. (experiência passada relevante)

→ I have worked with Django.

• Did you finish the migration? (resposta curta negativa)

→ No, I haven't finished the migration yet.

• She joined the team in 2021 and she still works here. (use for/since)

→ She has worked on the team since 2021.

Note que a última frase substitui joined ... and still works por has worked ... since 2021, que é a forma natural em inglês para essa mesma ideia.

Resumo

Present perfect = have/has + past participle. Use para experiências (ever, never, before, for, since) e para mudanças recentes (just, already, yet, recently, so far). Quando há tempo passado específico (yesterday, last week, in 2023), use past simple. Negativas: haven't/hasn't. Perguntas: Have/Has + sujeito + particípio. Respostas curtas repetem o auxiliar: Yes, I have. / No, I haven't.