The Portuguese Future Subjunctive: Use Se and Quando Naturally — Practice
A guided practice lesson with English explanations, Brazilian Portuguese examples, and answers you can check. Read the examples, recall the meaning, then say a version of your own.
Recognize the future subjunctive after time and condition words
When se, quando, assim que, or enquanto introduces a future event that is not yet certain or complete, Brazilian Portuguese commonly uses the future subjunctive. The sentence may describe what will happen if a condition is met or when an event occurs: se você precisar, me chama (if you need anything, call me).
The future subjunctive often looks like the personal infinitive for regular verbs, but common irregular verbs have forms worth learning: quando eu tiver (when I have), se ela fizer (if she does), assim que eles forem (as soon as they go/are).
| Brazilian Portuguese | English meaning |
|---|---|
| Quando eu chegar, mando uma mensagem. | When I arrive, I’ll send a message. |
| Se você quiser, a gente pede comida. | If you want, we can order food. |
| Assim que eles souberem, vão contar para nós. | As soon as they know, they’ll tell us. |
Do not use the present subjunctive for every future clause
English uses a present form after ‘when’ in a future sentence (‘when I arrive’), but Portuguese often changes the verb: quando eu chegar. The future subjunctive is especially useful after these conjunctions when the clause points to a future possibility. If the event is habitual or already established, the present tense may be right instead: quando chego cedo, tomo café em casa (when I arrive early, I have coffee at home).
This pattern is related to forms such as se eu for, the future of ir and ser. Learn it through complete time and condition clauses rather than translating each English verb ending in isolation.
| Brazilian Portuguese | English meaning |
|---|---|
| Se chover amanhã, vamos ficar em casa. | If it rains tomorrow, we’ll stay home. |
| Quando você tiver um minuto, pode me ligar? | When you have a minute, could you call me? |
| Se eu fizer a reserva, você escolhe o horário? | If I make the reservation, will you choose the time? |
Remember: After se, quando, assim que, or enquanto points to an uncertain future event, look for the future subjunctive: se chover, quando eu chegar, assim que você puder.
Check your understanding
Choose the English meaning of each Portuguese example. Answer before looking back at the tables. These questions check the written examples in this guide; they are not a listening or proficiency test.
Recall the Portuguese, then say it
Read the English prompt and say a Portuguese version before opening the answer. The answer shows the example from the lesson; other natural translations may also work. Compare the meaning and the situation rather than counting a different word as automatically wrong.
When I arrive, I’ll send a message.
Show a Portuguese answer
Quando eu chegar, mando uma mensagem.
If you want, we can order food.
Show a Portuguese answer
Se você quiser, a gente pede comida.
As soon as they know, they’ll tell us.
Show a Portuguese answer
Assim que eles souberem, vão contar para nós.
If it rains tomorrow, we’ll stay home.
Show a Portuguese answer
Se chover amanhã, vamos ficar em casa.
When you have a minute, could you call me?
Show a Portuguese answer
Quando você tiver um minuto, pode me ligar?
If I make the reservation, will you choose the time?
Show a Portuguese answer
Se eu fizer a reserva, você escolhe o horário?
Make the phrase useful to you
Choose one example you could actually use. Say it once from memory, then change one detail that fits your life, such as the person, place, time, or object. Check whether your change also needs a different verb form, article, or adjective ending. If it does, compare it with the pattern in the explanation.
After se, quando, assim que, or enquanto points to an uncertain future event, look for the future subjunctive: se chover, quando eu chegar, assim que você puder.
Return to two prompts tomorrow without opening the answers first. If a phrase still feels difficult, shorten it to a useful chunk and build the complete sentence again.
Sources and your next lesson
This I Speak Portuguese practice guide builds on our The Portuguese Future Subjunctive: Use Se and Quando Naturally lesson on Real Life Portuguese, with written recall tasks and additional speaking practice. The explanations and examples are teaching material; the practice questions are exercises, not a transcript of a recording.
To add Brazilian audio to your routine, choose a lesson in the Real Life Portuguese app. The app offers its own lessons and practice; this page does not imply that every example here has an app recording.
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