B2 · 중상급 챕터 3

Clarifying Subjects with the Personal Infinitive

5 총 규칙
50 예문
6

Chapter in 30 Seconds

Master the Personal Infinitive to speak with native-level precision and clarity in Portuguese.

  • Conjugate verbs to identify exactly who is performing an action.
  • Replace complex subjunctive structures with elegant infinitive forms.
  • Apply the infinitive correctly after common prepositions and time markers.
Clarify your subjects and elevate your fluency.

배울 내용

Hey there, language explorer! Ready to unlock a new level of precision and fluency in your Portuguese? In this chapter, we're diving deep into the Personal Infinitive (Infinitivo Pessoal) – a powerful tool that will make your speech sound incredibly natural and sophisticated. It might sound complex, but by the end, you'll wonder how you ever spoke without it! What will you learn? You'll master how to specify *exactly who* is performing an action after prepositions or impersonal expressions. Think about situations where you want to say,

For *us* to understand...
or Without *you* knowing... – the Personal Infinitive provides a direct, elegant way to do this without resorting to the often-tricky subjunctive mood. You'll learn to conjugate verbs like falar (to speak) or comer (to eat) in their personal infinitive forms to perfectly match the subject. Why does it matter? This isn't just another grammar rule; it's a key to sounding genuinely native. It allows you to express nuances and avoid ambiguity, making your Portuguese flow effortlessly. Imagine discussing plans with a friend:
Before *we* go to the cinema, we should eat dinner.
Or giving advice: "It's important for *you* to know this." The Personal Infinitive brings clarity and authenticity to these everyday interactions. How do the rules connect? We'll start by understanding the basic concept and conjugation patterns. Then, we'll explore its crucial role after various prepositions and impersonal phrases, including time expressions like antes de (before) and depois de (after). You'll see how these rules build upon each other, offering a streamlined path to subject clarification while cleverly sidestepping the subjunctive. What will you be able to do? Upon completing this chapter, you'll confidently express complex ideas with greater precision and sound far more like a native speaker. You'll navigate conversations about responsibilities, timelines, and conditions with a newfound ease, ensuring your message is always crystal clear. Ready to make your Portuguese shine? Let's go!

Learning Objectives

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

  1. 1
    By the end you will be able to: Conjugate and apply the personal infinitive to clarify subjects in complex sentences.

챕터 가이드

Overview

Welcome, language explorer, to a crucial step in mastering Portuguese grammar B2! This chapter introduces you to the Personal Infinitive, known in Portuguese as Infinitivo Pessoal. If you've ever found yourself struggling to precisely state *who* is doing an action in a complex sentence, especially after prepositions or impersonal phrases, this is your solution.
The Personal Infinitive is a powerful and elegant grammatical construction that will significantly elevate your fluency and clarity, making your speech sound much more natural and sophisticated.
At the B2 level, moving beyond basic sentence structures is essential for expressing nuanced ideas. The Personal Infinitive allows you to do just that by providing a direct way to clarify the subject of a verb when it's dependent on another clause. Instead of relying on potentially awkward workarounds or the often-tricky subjunctive mood, you'll learn to use this unique Portuguese feature to say things like
for *us* to go
or without *them* knowing with ease.
This isn't just about learning a new rule; it's about unlocking a key aspect of authentic Portuguese expression.
Mastering the Infinitivo Pessoal is a hallmark of advanced Portuguese grammar. It's a skill that native speakers use constantly, and integrating it into your own language will make your communication smoother, more precise, and far more understandable. By the end of this chapter, you’ll confidently apply this structure in various contexts, ensuring your message is always crystal clear and authentically Portuguese.

How This Grammar Works

The Personal Infinitive (Infinitivo Pessoal) is a fascinating and uniquely Portuguese grammatical feature that allows us to specify the subject of an infinitive verb. Unlike the impersonal infinitive (e.g., falar – to speak), the Personal Infinitive changes its ending to match the person performing the action, much like a conjugated verb. This directly addresses
The Personal Infinitive: Verbs with People Attached
and
The Personal Infinitive: Verbs with Personality (Infinitivo Pessoal)
.
Let's look at the conjugation pattern for regular verbs using falar (to speak), comer (to eat), and partir (to leave):
* eu falar (for me to speak)
* tu falares (for you to speak)
* ele/ela/você falar (for him/her/you to speak)
* nós falarmos (for us to speak)
* vós falardes (for you (plural, informal) to speak)
* eles/elas/vocês falarem (for them/you (plural) to speak)
Notice how the endings change: -es, -mos, -des, -em. The first and third person singular forms are identical to the impersonal infinitive. Irregular verbs (like ser, ter, vir, pôr) will have irregular stems, but they generally follow the same personal endings.
For example, ser becomes eu ser, tu seres, nós sermos, etc.
The Personal Infinitive is most commonly used after prepositions and impersonal expressions, as highlighted in
Personal Infinitive: Conjugating Verbs After Prepositions (Infinitivo Pessoal)
. This is where it shines as a tool for Avoiding the Subjunctive when a clear subject is present.
Common triggers include:
* Prepositions: para (for/in order to), antes de (before), depois de (after), sem (without), por (by/for), ao (upon/when).
* Para eles entenderem, preciso explicar melhor. (For them to understand, I need to explain better.)
* Antes de sairmos, vamos comer. (Before we leave, let's eat.)
* Sem tu saberes, ele já fez isso. (Without you knowing, he already did that.)
* Impersonal Expressions: É importante (It's important), É preciso (It's necessary), É bom (It's good), É difícil (It's difficult).
* É importante vocês estudarem para o exame. (It's important for you (plural) to study for the exam.)
* É preciso nós falarmos sobre isso. (It's necessary for us to talk about this.)
This usage is particularly common with time expressions like antes de and depois de, as covered in "Timing & Subjects: Using Personal Infinitive (antes/depois de)". It provides a concise way to link actions to specific individuals within a temporal framework, making your B2 Portuguese sound incredibly natural and precise.

Common Mistakes

  1. 1Wrong:
    É importante para nós *estudar*.
Correct:
É importante para nós *estudarmos*.
*Explanation:* When an impersonal expression like é importante is followed by a preposition (para) and then a specific subject (nós), the infinitive verb must be conjugated in the personal infinitive to match that subject. Here, estudar is the impersonal infinitive, but estudarmos correctly reflects the nós subject.
  1. 1Wrong:
    Antes que *nós vamos* embora, quero falar contigo.
Correct:
Antes de *nós irmos* embora, quero falar contigo.
*Explanation:* While the subjunctive (que nós vamos) might seem like an option here, the Personal Infinitive is much more common and natural after prepositions like antes de when referring to a specific subject. It elegantly avoids the subjunctive mood, making the sentence smoother and more idiomatic in Portuguese grammar.
  1. 1Wrong:
    Ele saiu sem *tu perceber*.
Correct:
Ele saiu sem *tu perceberes*.
*Explanation:* Even with irregular verbs or when the impersonal infinitive form is the same for the first and third person singular, other persons (like tu or nós) still require their specific personal infinitive endings. Perceber is the impersonal infinitive, but perceberes correctly matches the tu subject.

Real Conversations

A

A

É importante para nós chegarmos cedo amanhã. (It's important for us to arrive early tomorrow.)
B

B

Sim, para não perdermos o início da reunião. (Yes, so we don't miss the start of the meeting.)
A

A

O que podemos fazer antes de eles partirem? (What can we do before they leave?)
B

B

Podemos jantar juntos para nos despedirmos. (We can have dinner together to say goodbye.)
A

A

Sem tu saberes, eu já comprei os bilhetes. (Without you knowing, I already bought the tickets.)
B

B

Que bom! Assim não precisamos nos preocupar com isso. (That's great! That way we don't need to worry about it.)

Quick FAQ

Q

How does the Personal Infinitive help in B2 Portuguese fluency?

It allows you to specify the subject of an infinitive verb, especially after prepositions or impersonal expressions, making your sentences more precise and sounding much more natural, often avoiding the subjunctive.

Q

Can I always use the Personal Infinitive instead of the subjunctive after prepositions?

Not always, but very often. When the subject of the infinitive is clearly stated or implied, the Personal Infinitive is usually the preferred and most natural choice, especially after prepositions like para, antes de, depois de, sem, etc., effectively Avoiding the Subjunctive.

Q

What's the main difference between the impersonal infinitive and the Personal Infinitive in Portuguese grammar?

The impersonal infinitive (e.g., falar) refers to the action generally, without a specific subject. The Personal Infinitive (e.g., falarmos) specifies *who* is performing that action, with endings that match the subject.

Cultural Context

The Personal Infinitive is a cornerstone of advanced Portuguese grammar and is used extensively in both European and Brazilian Portuguese. Its frequent use is one of the key indicators of a highly proficient speaker. While it might feel a bit formal or clunky to English speakers initially, mastering it makes your Portuguese sound educated, precise, and effortlessly natural in everyday conversations, from making plans to giving advice.
It's not just a rule; it's an ingrained part of how native speakers structure their thoughts.

팁과 요령 (4)

🎯

'Ao'를 활용한 시간 표현

Ao 뒤에 인칭 부정사를 붙이면 '~했을 때'라는 아주 자연스러운 표현이 돼요. 친구들과 식당을 나오면서 이렇게 말해보세요:
Ao sairmos do restaurante, começou a chover.
frontend.learn_grammar.from_rule: 인칭 부정사: 주어가 있는 부정사
🎯

접속법 대신 사용하기

브라질 구어체에서는 'que + 접속법'보다 인칭 부정사를 쓰는 게 훨씬 자연스러워요. 카페에서 주문할 때
Para eles fazerem o café
라고 하면 원어민 느낌이 물씬 날 거예요!
frontend.learn_grammar.from_rule: 인칭 부정사: 인칭에 따라 변하는 동사 (Infinitivo Pessoal)
💡

Eu와 Ele는 변장술의 달인

'Eu'와 'Ele/Ela/Você'일 때는 동사 원형과 모양이 똑같아서 구분이 안 될 수도 있어요. 오직 문맥으로만 알 수 있답니다!
É bom eu comer agora.
frontend.learn_grammar.from_rule: 인칭 부정사: 접속법 피하는 비결
🎯

접속법의 지름길

복잡한 'que + 접속법' 문장이 어렵다면 '전치사 + 인칭 부정사'를 써보세요! 훨씬 기억하기 쉽고 의미도 잘 통해요:
Para eles saberem a verdade...
frontend.learn_grammar.from_rule: 인칭 부정사: 전치사 뒤의 동사 활용

핵심 어휘 (6)

Infinitivo Pessoal Personal Infinitive Conjugação Conjugation Antes de Before Depois de After Ambiguidade Ambiguity Sujeito Subject

Real-World Preview

calendar

Planning a Meeting

Review Summary

  • Infinitivo + Personal Ending
  • Antes/Depois de + Personal Inf.

자주 하는 실수

You mixed up the singular pronoun with a plural verb ending. Match the ending to the subject.

Wrong: Para eu comemos.
정답: Para eu comer.

Without the subject pronoun, it's ambiguous who is arriving. Always include the pronoun if the subject changes or is not obvious.

Wrong: Antes de chegar, eu vi ele.
정답: Antes de eu chegar, eu vi ele.

You don't need 'que' with the personal infinitive. 'Que' usually triggers the subjunctive.

Wrong: É importante que nós fazermos.
정답: É importante nós fazermos.

이 챕터의 규칙 (5)

Next Steps

You have done an amazing job today! Keep practicing, and you'll be speaking Portuguese with absolute confidence in no time.

Write a diary entry using 5 sentences with the personal infinitive.

빠른 연습 (10)

괄호 안의 동사를 알맞은 형태로 바꿔 빈칸을 채우세요.

Comprei ingressos para nós ___ (ver) o show.

✓ Correct! ✗ Not quite. Correct answer: vermos
주어가 'nós'이므로 동사 'ver' 뒤에 '-mos'를 붙여야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 전치사 뒤의 동사 활용

다음 중 문법적으로 옳은 문장은 무엇인가요?

'내가 너(tu) 읽으라고 이거 샀어'를 올바르게 표현한 것은?

✓ Correct! ✗ Not quite. Correct answer: Comprei isto para tu leres.
'tu'와 함께 쓰일 때는 동사 원형에 '-es' 어미를 붙여 'leres'가 됩니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 주어가 있는 부정사

문장에서 틀린 부분을 찾아 바르게 고치세요.

É importante vocês estudarem para passares no exame.

✓ Correct! ✗ Not quite. Correct answer: É importante vocês estudarem para passarem no exame.
두 동사 모두 주어 'vocês'에 맞춰야 합니다. 'passares'는 'tu' 형태이므로 'passarem'으로 고쳐야 해요.

frontend.learn_grammar.from_rule: 인칭 부정사: 전치사 뒤의 동사 활용

알맞은 인칭 부정사 형태를 빈칸에 채워보세요.

Isso é para nós ___ (comer).

✓ Correct! ✗ Not quite. Correct answer: comermos
주어가 'nós'(우리)이므로 동사 원형 'comer'에 어미 '-mos'를 붙여야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 주어가 있는 부정사

틀린 부분을 찾아 고쳐보세요.

É difícil eles entender o filme.

✓ Correct! ✗ Not quite. Correct answer: É difícil eles entenderem o filme.
주어가 'eles'(그들)이므로 동사 원형에 복수 어미 '-em'을 붙여야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 접속법 피하는 비결

다음 중 문법적으로 옳은 문장은 무엇인가요?

Choose the grammatically correct sentence:

✓ Correct! ✗ Not quite. Correct answer: Saímos sem eles nos verem.
'sem' 뒤에 복수 주어 'eles'가 왔으므로 'ver'에 '-em'을 붙인 'verem'이 정답입니다. 'virem'은 'ver'의 미래 접속법이라 여기서는 맞지 않아요.

frontend.learn_grammar.from_rule: 인칭 부정사: 인칭에 따라 변하는 동사 (Infinitivo Pessoal)

문장에서 틀린 부분을 찾아 고쳐보세요.

É preciso nós trabalhar mais.

✓ Correct! ✗ Not quite. Correct answer: É preciso nós trabalharmos mais.
주어가 'nós'일 때는 반드시 '-mos' 어미를 붙여 'trabalharmos'라고 해야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 인칭에 따라 변하는 동사 (Infinitivo Pessoal)

빈칸에 알맞은 인칭 부정사 형태를 채워보세요.

É importante ___ (nós/estudar) para o exame.

✓ Correct! ✗ Not quite. Correct answer: nós estudarmos
주어가 'nós'(우리)이므로 동사 원형 'estudar'에 어미 '-mos'를 붙여야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 접속법 피하는 비결

인칭 부정사 사용법에서 틀린 부분을 찾아 고쳐보세요.

Nós saímos sem eles saber.

✓ Correct! ✗ Not quite. Correct answer: Nós saímos sem eles saberem.
두 번째 동사의 주어가 'eles'(그들)이므로 '-em' 어미를 붙여 'saberem'으로 고쳐야 합니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 주어가 있는 부정사

다음 중 옳은 문장을 고르세요.

'그들이 모르게'를 올바르게 표현한 것은?

✓ Correct! ✗ Not quite. Correct answer: Sem eles saberem.
'sem' 뒤에 주어 'eles'가 왔으므로 'saber'에 '-rem'을 붙인 'saberem'이 정답입니다.

frontend.learn_grammar.from_rule: 인칭 부정사: 전치사 뒤의 동사 활용

Score: /10

자주 묻는 질문 (6)

아니요, 둘은 쓰이는 상황이 달라요! 전치사 뒤에는 반드시 부정사를 써야 해서 para fores라고 할 수 없고 para seres라고 해야 합니다.
기본 동사 원형과 똑같기 때문이에요. 누가 하는지 명확히 하고 싶다면 동사 앞에 인칭 대명사를 그냥 써주면 돼요. 예를 들어 para eu fazer처럼요.
동사 원형에 어미를 붙여서 누가 그 행동을 하는지 보여주는 형태예요. 포르투갈어만의 독특한 특징으로, 주어가 명확하거나 주절의 주어와 다를 때 주로 사용하죠.
É importante eles saberem a verdade.
처럼 말이에요.
아니요, 'eu'나 'você'일 때는 일반 부정사와 똑같아요. 하지만 'tu'(-es), 'nós'(-mos), 'eles/vocês'(-em)일 때는 어미를 꼭 붙여야 해요.
Para nós fazermos o trabalho.
가 좋은 예시죠.
«É...»(무엇무엇이다)로 시작하지만 주인공이 사물이 아닌 상황 전체를 말하는 표현이에요. 예를 들어 É bom(좋다), É fácil(쉽다) 같은 것들이죠.
É fácil tu fazeres isso.
훨씬 간단하니까요! 복잡하고 불규칙한 접속법 변화를 외울 필요 없이, 동사 원형에 간단한 어미만 붙이면 돼요. 말투도 훨씬 우아해 보인답니다.
É melhor nós sairmos.