B2 · Upper Intermediate Chapter 15

Setting Conditions and Time Limits

5 Total Rules
52 examples
6 min
Rules in This Chapter Quick Practice

Chapter in 30 Seconds

Master the art of setting conditions and time limits to sound like a native Portuguese speaker.

  • Connect sentences using advanced conjunctions like 'antes que' and 'caso'.
  • Apply the subjunctive mood to express conditions, limitations, and future possibilities.
  • Construct complex sentences that convey nuance and precision in professional or casual settings.
Command the conversation with precision and elegant conditions.

What You'll Learn

Get ready to level up your Portuguese! This chapter isn't just about simple sentences; it's about adding precision and nuance to your conversations, making you sound much more like a native speaker. Imagine you're making plans with a friend and want to say, 'I can't come unless I have money' or 'We're going for a picnic, unless it rains.' Here, you'll master how to express these exact conditions and time limits using powerful conjunctions. You'll dive into phrases like 'antes que' (before), 'a não ser que' (unless), 'contanto que' (as long as), 'sem que' (without/unless), 'caso' (in case), and 'a menos que' (unless). These aren't just words; they're your secret weapons for expressing complex ideas. Crucially, you'll learn how these conjunctions act as triggers, always pulling the next verb into the subjunctive mood – a hallmark of advanced Portuguese. Discover how 'antes que' helps you set clear deadlines, especially when different subjects are involved, or how 'caso' allows you to articulate 'in case' scenarios with elegance. And with 'sem que', you'll effortlessly express actions that happen 'without' something else occurring. By the end of this chapter, you won't just be understood; you'll be able to communicate your plans, express nuanced proposals, and set conditions with the confidence and accuracy of a true B2 speaker. Your conversations will gain depth, impressing everyone with your mastery of Portuguese. Ready to fine-tune your expression?

Learning Objectives

By the end of this chapter, you will be able to:

  1. 1
    By the end you will be able to: Use subjunctive triggers to create conditional sentences in both Brazilian and European Portuguese.

Chapter Guide

Overview

Welcome to an exciting chapter designed to significantly boost your Portuguese grammar B2 skills! As you progress in your language journey, moving beyond basic sentences becomes crucial. This guide is your key to unlocking more complex and nuanced expressions, helping you sound more natural and sophisticated. We’re diving deep into how to set conditions and time limits in Portuguese, equipping you with the tools to express ideas like "I can't go unless I finish my work" or "Let's meet before it gets dark."
This chapter focuses on powerful conjunctions that act as triggers for the subjunctive mood, a hallmark of advanced Portuguese. You’ll master phrases such as antes que (before), a não ser que (unless), contanto que (as long as), sem que (without/unless), caso (in case), and a menos que (unless). Understanding these isn't just about memorizing words; it's about learning how to structure your thoughts to convey specific conditions, possibilities, and restrictions. By the end, you'll be able to communicate your plans, express detailed proposals, and set conditions with the precision expected of a CEFR B2 speaker. Get ready to elevate your conversations and impress with your command of Portuguese!

How This Grammar Works

At the heart of this chapter is the subjunctive mood. The conjunctions we're exploring are classic "subjunctive triggers," meaning the verb immediately following them must be in the subjunctive. This is essential for expressing hypothetical situations, desires, doubts, and conditions.
Let's break down these powerful connectors:
* Subjunctive Triggers: The 'A' List (Antes que, A não ser que, A menos que)
* Antes que (before): This conjunction is used to set a time limit or a deadline, particularly when the subject of the main clause is different from the subject of the subordinate clause.
* Vou sair antes que chova. (I will leave before it rains.)
* A não ser que and A menos que (unless): Both convey a negative condition, meaning "if not" or "except if." They are largely interchangeable in most contexts.
* Não vou viajar a não ser que tenhas dinheiro. (I won't travel unless you have money.)
* Não vamos a menos que ele venha. (We're not going unless he comes.)
* Portuguese Conditionals: 'As long as' (contanto que)
* Contanto que (as long as / provided that): This phrase introduces a condition that must be met for something else to happen. It's perfect for expressing agreement or setting a prerequisite.
* Eu ajudo-te, contanto que me ajudes também. (I'll help you, as long as you help me too.)
* Using 'Sem que': Without/Unless with Subjunctive
* Sem que (without / unless): This conjunction often means "without something happening" or can sometimes be used similarly to "unless" in specific contexts, emphasizing the absence of a condition.
* Ele saiu sem que ninguém o visse. (He left without anyone seeing him.)
* Não posso terminar o projeto sem que me dês os dados. (I can't finish the project unless you give me the data.)
* Portuguese: How to say 'In case' (Caso + Subjunctive)
* Caso (in case): This is used to introduce a potential future event or situation, suggesting a precaution or a contingency plan.
* Leva um casaco caso faça frio. (Take a jacket in case it gets cold.)
Mastering these structures will significantly enhance your ability to express complex ideas and conditions in Portuguese grammar.

Common Mistakes

  1. 1✗ Wrong: "Vou sair antes que chove."
✓ Correct: "Vou sair antes que chova."
*Explanation:* The conjunction antes que always triggers the subjunctive mood in the following verb. "Chove" is indicative, while "chova" is subjunctive.
  1. 1✗ Wrong: "Não te empresto dinheiro a menos que tu me devolves."
✓ Correct: "Não te empresto dinheiro a menos que tu me devolvas."
*Explanation:* Similar to antes que, a menos que (and a não ser que) require the subjunctive. "Devolves" is indicative, "devolvas" is subjunctive.
  1. 1✗ Wrong: "Leva um guarda-chuva caso vai chover."
✓ Correct: "Leva um guarda-chuva caso chova."
*Explanation:* Caso always introduces a clause where the verb must be in the subjunctive mood. "Vai chover" (or "chove") is indicative; "chova" is subjunctive.

Real Conversations

A

A

Vamos jantar fora hoje à noite, a não ser que estejamos muito cansados. (Let's eat out tonight, unless we're too tired.)
B

B

Boa ideia! Contanto que não seja demasiado caro, estou dentro. (Good idea! As long as it's not too expensive, I'm in.)
A

A

Devíamos reservar os bilhetes antes que esgotem. (We should book the tickets before they sell out.)
B

B

Sim, caso haja algum problema com a reserva, podemos ligar para lá. (Yes, in case there's any problem with the reservation, we can call them.)
A

A

Ele nunca faz nada sem que eu lhe peça. (He never does anything without me asking him.)
B

B

É verdade, a menos que seja algo que lhe interesse muito. (That's true, unless it's something that really interests him.)

Quick FAQ

Q

What's the main difference between a não ser que and a menos que?

A: In most contexts, a não ser que and a menos que are interchangeable, both meaning "unless" and requiring the subjunctive. There might be subtle regional preferences, but grammatically, they function the same.

Q

Does caso always require the subjunctive?

A: Yes, when caso means "in case" or "if" (introducing a hypothetical condition), the verb that follows it must always be in the subjunctive mood.

Q

Can I use antes que if the subject is the same in both clauses?

A: While possible, it's more common and often more natural to use antes de + infinitive when the subject is the same. For example, "Vou sair antes de chover" (I will leave before it rains) is less common than "Vou sair antes que chova" when the subject of "chover" is implicit (it). If the subjects are explicitly different, antes que + subjunctive is the only option.

Cultural Context

In Portuguese conversations, these conditional and time-limiting conjunctions are vital for expressing politeness, making plans, and conveying nuances. Native speakers use them constantly to soften requests, propose alternatives, or state clear boundaries without sounding abrupt. For instance, using contanto que allows for a polite way to set a condition for agreement, while caso is indispensable for preparing for contingencies, showing foresight and care. Mastering these structures not only improves your Portuguese grammar but also enhances your ability to engage in more sophisticated and socially appropriate interactions.

Key Examples (8)

1

Vou cancelar o Uber, a não ser que você esteja pronta.

I'm cancelling the Uber, unless you are ready.

Subjunctive Triggers: The 'A' List (Antes que, A não ser que)
2

Posta a foto antes que a gente mude de ideia.

Post the photo before we change our minds.

Subjunctive Triggers: The 'A' List (Antes que, A não ser que)
3

Vou sair antes que a chuva comece.

I'm going to leave before the rain starts.

Antes que: The 'Beat the Clock' Connector (Subjunctive)
4

Apaga a foto antes que tua mãe veja!

Delete the photo before your mom sees it!

Antes que: The 'Beat the Clock' Connector (Subjunctive)
5

Ele entrou na sala sem que ninguém percebesse.

He entered the room without anyone noticing.

Using 'Sem que': Without/Unless with Subjunctive
6

Não posto nada no Instagram sem que você aprove primeiro.

I don't post anything on Instagram without you approving it first.

Using 'Sem que': Without/Unless with Subjunctive
7

Caso você `precise` de ajuda, me avise.

In case you need help, let me know.

Portuguese: How to say 'In case' (Caso + Subjunctive)
8

Caso `chova`, o evento será cancelado.

In case it rains, the event will be canceled.

Portuguese: How to say 'In case' (Caso + Subjunctive)

Tips & Tricks (4)

💡

Subject Check

Always check if the subject changes. If it doesn't, use 'antes de' + infinitive.
frontend.learn_grammar.from_rule: Subjunctive Triggers: The 'A' List (Antes que, A não ser que)
💡

Check the subject

If the subject is the same, use 'antes de' + infinitive. It's cleaner!
frontend.learn_grammar.from_rule: Antes que: The 'Beat the Clock' Connector (Subjunctive)
💡

Subject Check

Always check if the subject is the same. If yes, use the infinitive to sound more natural.
frontend.learn_grammar.from_rule: Using 'Sem que': Without/Unless with Subjunctive
💡

The Subjunctive Trigger

Whenever you see 'caso', your brain should immediately switch to the subjunctive mood. It's a hard rule.
frontend.learn_grammar.from_rule: Portuguese: How to say 'In case' (Caso + Subjunctive)

Key Vocabulary (6)

antes que before a não ser que unless contanto que as long as sem que without caso in case a menos que unless

Real-World Preview

sun

Planning a Picnic

Review Summary

  • Conjunction + Subjunctive Verb
  • Antes que + Subjunctive
  • Sem que + Subjunctive
  • Caso + Subjunctive
  • A menos que + Subjunctive

Common Mistakes

'Antes que' requires the subjunctive. 'Chega' is indicative.

Wrong: Eu vou antes que ele chega.
Correct: Eu vou antes que ele chegue.

After 'caso', always use the present subjunctive form 'precise'.

Wrong: Caso você precisa de ajuda, me avise.
Correct: Caso você precise de ajuda, me avise.

'A menos que' triggers the subjunctive 'venha'.

Wrong: Iremos a menos que ele vem.
Correct: Iremos a menos que ele venha.

Next Steps

You have done an amazing job today! Keep practicing these structures in your daily speaking.

Write 5 sentences about your future plans using the new conjunctions.

Continue to: Dreaming with the Imperfect Subjunctive

Quick Practice (10)

Fill in the blank with the correct verb form.

Ele saiu sem que eu (ver) ____.

✓ Correct! ✗ Not quite. Correct answer: visse
Imperfect subjunctive is required.

frontend.learn_grammar.from_rule: Using 'Sem que': Without/Unless with Subjunctive

Correct the error.

Find and fix the mistake:

Não vou a não ser que ele vai.

✓ Correct! ✗ Not quite. Correct answer: Não vou a não ser que ele vá
Subjunctive required.

frontend.learn_grammar.from_rule: Subjunctive Triggers: The 'A' List (Antes que, A não ser que)

Find the error.

Find and fix the mistake:

Eu fiz antes que ele vem.

✓ Correct! ✗ Not quite. Correct answer: d
Should be 'viesse'.

frontend.learn_grammar.from_rule: Antes que: The 'Beat the Clock' Connector (Subjunctive)

Correct the error in the sentence.

Find and fix the mistake:

Não como a menos que ele come.

✓ Correct! ✗ Not quite. Correct answer: Não como a menos que ele coma.
Subjunctive present of comer is coma.

frontend.learn_grammar.from_rule: Negative Conditions: Unless (A menos que)

Choose the correct sentence.

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: Caso chova, eu fico.
Present subjunctive 'chova' is correct.

frontend.learn_grammar.from_rule: Portuguese: How to say 'In case' (Caso + Subjunctive)

Choose the correct sentence.

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: Antes que eu chegue
Subjunctive after trigger.

frontend.learn_grammar.from_rule: Subjunctive Triggers: The 'A' List (Antes que, A não ser que)

Fill in the blank with the correct subjunctive form of 'fazer'.

Caso você ____ isso, me avise.

✓ Correct! ✗ Not quite. Correct answer: faça
Present subjunctive of 'fazer' is 'faça'.

frontend.learn_grammar.from_rule: Portuguese: How to say 'In case' (Caso + Subjunctive)

Fill in the blank with the correct verb form.

Eu saio antes que ele ___ (chegar).

✓ Correct! ✗ Not quite. Correct answer: chegue
Subjunctive required.

frontend.learn_grammar.from_rule: Subjunctive Triggers: The 'A' List (Antes que, A não ser que)

Fill in the blank with the correct verb form.

Não vou a menos que você (ir) comigo.

✓ Correct! ✗ Not quite. Correct answer: vá
Subjunctive present of ir is vá.

frontend.learn_grammar.from_rule: Negative Conditions: Unless (A menos que)

Identify the error in the sentence.

Find and fix the mistake:

Caso você precisa de ajuda, me ligue.

✓ Correct! ✗ Not quite. Correct answer: precisa
Should be 'precise'.

frontend.learn_grammar.from_rule: Portuguese: How to say 'In case' (Caso + Subjunctive)

Score: /10

Common Questions (6)

No, it is grammatically incorrect. Always use the subjunctive.
Use 'antes de' + infinitive instead of 'antes que'.
Because the event is not yet a fact; it is a future expectation.
Only in very informal, non-standard speech.
It introduces a negative or hypothetical event, which is a classic trigger for the subjunctive mood in Portuguese.
Grammatically, no. While some native speakers do it in very casual speech, it is considered incorrect in standard Portuguese.
Previous Chapter
Triggers: Doubt and Impersonal Opinions
Next Chapter
Dreaming with the Imperfect Subjunctive
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