I will have finished or I will have been working? Both tenses look at a moment in the future and at what will have happened up to then. The difference: the Future Perfect focuses on the result, and the Future Perfect Continuous focuses on the duration.I will have finished ou I will have been working? Os dois tempos olham para um momento do futuro e para o que terá acontecido até lá. A diferença: o Future Perfect foca no resultado, e o Future Perfect Continuous foca na duração.
Future Perfect
An action completed before a moment in the future.Ação concluída antes de um momento no futuro.
By 6 p.m., I will have finished the report. (Até as 18h, eu terei terminado o relatório.)
Future Perfect Continuous
An action in progress up to a moment in the future, with the focus on how long.Ação em andamento até um momento no futuro, com foco em quanto tempo.
By 6 p.m., I will have been working for ten hours. (Às 18h, vai fazer dez horas que estou trabalhando.)
B1+ Future Perfect
Imagine yourself at a point in the future and look back: what will be done by then? That is the Future Perfect. It uses will have + the past participle, the same participle you use in the Present Perfect.Imagine-se em um ponto do futuro e olhe para trás: o que estará pronto até lá? Esse é o Future Perfect. Ele usa will have + o particípio passado, o mesmo particípio do Present Perfect.
| Form | Example | Português |
|---|---|---|
| Affirmative | She will have graduated by next year. | Até o ano que vem, ela terá se formado. |
| Negative | He won’t have read the report by Monday. | Ele não terá lido o relatório até segunda. |
| Question | Will you have eaten by the time I arrive? | Você já terá comido quando eu chegar? |
When to use it
- An action completed before a moment in the future: By 10 p.m., the students will have submitted their essays.Ação concluída antes de um momento no futuro: Até as 22h, os alunos terão entregado as redações.
- An action completed before another future action: When you arrive, I will have already cooked dinner.Ação concluída antes de outra ação futura: Quando você chegar, eu já terei feito o jantar.
- A deduction about something that has probably already happened: Don’t call him now. He will have gone to bed.Uma dedução sobre algo que provavelmente já aconteceu: Não ligue agora. Ele já deve ter ido dormir.
Common time markers: by then, by tomorrow, by next week, by the time, before, already, when.Marcadores comuns: by then, by tomorrow, by next week, by the time, before, already, when.
By = “até” (no later than)
By + a time means “at or before that time”. It is the most typical partner of the Future Perfect. Do not confuse it with until, which describes a situation that continues up to that time.By + um horário significa “até esse momento, no máximo”. É o parceiro mais típico do Future Perfect. Não confunda com until, que descreve uma situação que continua até esse momento.
B1+ Future Perfect Continuous
Now the focus moves from the result to the process: how long will the action have been going on when we reach that future moment? Add been + the -ing form.Agora o foco sai do resultado e vai para o processo: há quanto tempo a ação estará acontecendo quando chegarmos àquele momento do futuro? Acrescente been + a forma com -ing.
| Form | Example | Português |
|---|---|---|
| Affirmative | By December, she will have been teaching for twenty years. | Em dezembro, ela vai completar vinte anos dando aula. |
| Negative | He won’t have been waiting long. | Ele não vai ter esperado muito tempo. |
| Question | Will you have been studying for three years by then? | Até lá, vai fazer três anos que você estuda? |
When to use it
- To highlight the duration of an action up to a future moment: By Friday, I will have been working on this report for two weeks.Destacar a duração de uma ação até um momento futuro: Na sexta, vai fazer duas semanas que estou trabalhando neste relatório.
- To explain the cause of a future state: She will be exhausted because she will have been travelling all day.Explicar a causa de um estado futuro: Ela vai estar exausta porque terá passado o dia todo viajando.
Common time markers: for + a period of time, all day, all week, by the time, by then.Marcadores comuns: for + período, all day, all week, by the time, by then.
How to translate it
Portuguese has no exact equivalent tense. Use “vai fazer… que” or “vai completar…”: By May, we will have been living here for ten years.O português não tem um tempo igual. Use “vai fazer… que” ou “vai completar…”: Em maio, vai fazer dez anos que moramos aqui.
B1+ Result or duration?
The key question: what matters, the result or how long the action will have been going on?A pergunta-chave: o que importa é o resultado ou quanto tempo a ação estará durando?
- By noon, I will have written the email. (Ao meio-dia, o e-mail estará pronto.)
- By noon, I will have been writing the email for two hours. (Ao meio-dia, vai fazer duas horas que estou escrevendo o e-mail, que talvez ainda não esteja pronto.)
- By the time he arrives, I will have cleaned the house. (Quando ele chegar, a casa estará limpa.)
- By the time he arrives, I will have been cleaning for hours. (Quando ele chegar, vai fazer horas que estou limpando.)
How many or how long?
For how much / how many (result), use the Future Perfect: She will have read ten books. For how long (duration), use the Continuous: She will have been reading for hours.Para quanto / quantos (resultado), use o Future Perfect: Ela terá lido dez livros. Para há quanto tempo (duração), use o Continuous: Vai fazer horas que ela está lendo.
B1+ Rules to remember
Stative verbs
State verbs (know, believe, want, love, own, belong, understand, seem) are not used in the continuous: ✗ will have been knowing → ✓ By then, she will have known him for ten years.Verbos de estado (know, believe, want, love, own, belong, understand, seem) não vão para o continuous: ✗ will have been knowing → ✓ Até lá, vai fazer dez anos que ela o conhece.
Have been, never being
The structure is fixed: ✗ She will have being working → ✓ She will have been working all night.A estrutura é fixa: ✗ She will have being working → ✓ Ela terá passado a noite toda trabalhando.
Use a duration
The Continuous almost always comes with a time expression (for three hours, all day). Without one, the simple Future Perfect usually sounds more natural.O Continuous quase sempre vem com uma expressão de tempo (for three hours, all day). Sem ela, o Future Perfect simples costuma soar mais natural.
Negatives and questions
Only will changes: won’t have finished, Will they have been waiting long? Have and been always stay the same.Só o will muda: won’t have finished, Will they have been waiting long? O have e o been ficam sempre iguais.
Comparison table
| Point | Future Perfect | Future Perfect Continuous |
|---|---|---|
| Structure (estrutura) | will + have + past participle | will + have + been + verb-ing |
| Focus (foco) | result, completion (resultado, conclusão) | duration, process (duração, processo) |
| Is the action finished? (a ação terminou?) | yes (sim) | not necessarily (não necessariamente) |
| Stative verbs (verbos de estado) | yes (sim): will have known | no (não) |
| Typical words (palavras típicas) | by, before, already, by the time | for, all day, by the time |
| Key question (pergunta-chave) | What will have been done? How many? (O que terá sido feito? Quanto?) | How long? (Há quanto tempo?) |
| Example (exemplo) | She will have finished the book. (Ela terá terminado o livro.) | She will have been reading for hours. (Vai fazer horas que ela está lendo.) |
Common Mistakes
Avoid these
✗ By then, they will have been knowing each other for years. ✓ By then, they will have known each other for years.Know é verbo de estado e não vai para o continuous.
✗ She will have being working all night. ✓ She will have been working all night.A estrutura é sempre have been, nunca have being.
✗ He will has finished by Monday. ✓ He will have finished by Monday.Depois de will, o verbo fica na forma base: have, mesmo com he, she e it.
✗ She will have not finished by then. ✓ She won’t have finished by then.Na negativa, o not vai logo depois de will: won’t have.
✗ By noon, I will have been writing ten emails. ✓ By noon, I will have written ten emails.Quantidade concluída é resultado: use o Future Perfect simples.
Quick Summary
| Tense | Use | Example | Português |
|---|---|---|---|
| Future Perfect | completed before a future moment | By 6 p.m., I will have finished the report. | Até as 18h, eu terei terminado o relatório. |
| Future Perfect | deduction about the present | He will have gone to bed. | Ele já deve ter ido dormir. |
| Future Perfect Continuous | duration up to a future moment | By May, we will have been living here for ten years. | Em maio, vai fazer dez anos que moramos aqui. |
| Future Perfect Continuous | cause of a future state | She will be tired because she will have been travelling all day. | Ela vai estar cansada porque terá passado o dia todo viajando. |
Practice Time
Quiz