Por vs. Para: Doing Favors & Swapping
Grammar Rule in 30 Seconds
Use 'Por' for cause, duration, and exchange; use 'Para' for destination, deadline, and purpose.
- Por: Use for exchange or duration. Example: 'Troquei o livro por um café.'
- Para: Use for goals or deadlines. Example: 'Este presente é para você.'
- Por: Use for means of transport or communication. Example: 'Falei por telefone.'
Overview
Prepositions like por and para are fundamental to Portuguese grammar, acting as essential connectors that define relationships between words. They present a significant challenge for learners, particularly because both can often translate to the single English preposition "for." However, their semantic domains are distinct and crucial for precise communication. At a B1 level, understanding this distinction moves beyond simple translation to grasping the underlying conceptual frameworks.
Por primarily conveys notions of exchange, cause, duration, means, or passage through a space. It signifies an action or state occurring on behalf of, in exchange for, through, or due to something. It represents a process, a reason, or a substitution.
Mastering por in the context of "favors and swapping" means recognizing when an action is performed as a substitute for another, as payment for a good, or as a consequence of a motivation. This involves understanding the agentive or transactional nature of the preposition.
Conversely, para typically expresses destination, purpose, recipient, or a deadline. It indicates a target, an objective, a beneficiary, or a specific point in the future. While para can mean "for" in the sense of "for the benefit of" or "intended for," it fundamentally differs from por by focusing on the end result or direction of an action.
The confusion arises when English "for" ambiguously covers both concepts, making a nuanced understanding of Portuguese indispensable.
How This Grammar Works
por and para lies in their portrayal of movement and relation. Por implies a traversal, an exchange, or a causal link. It describes an action that moves through a medium, as a result of a motivation, or in place of something else.por as representing a conduit, a reason, or a reciprocal action. When por is used for "favors," it signals that you are acting as an agent or substitute, fulfilling a role that someone else might have occupied, or undertaking a task that benefits another by taking it off their hands. The action flows through you.por someone, you are undertaking the action that they would otherwise have performed. You are stepping into their shoes. For example, Eu fui à reunião pelo meu colega. (I went to the meeting for/instead of my colleague.) Here, pelo (a contraction of por + o) indicates substitution; the colleague was unable to go, and you took their place.por indicates exchange or compensation, it establishes a transactional relationship. An item is given or received in return for another. For instance, Comprei este livro por vinte euros. (I bought this book for twenty euros.) The twenty euros are the compensation, the equivalent value given in exchange for the book.por. This aligns with por's role in conveying the means or the price of something.Para, in contrast, denotes direction toward a destination, a purpose, or a recipient. It signifies the ultimate target or objective of an action, emphasizing where something is going or what it is intended for. The action is directed to a beneficiary or towards a goal.Este presente é para você. (This present is for you.) Here, para clearly marks "you" as the recipient, the ultimate destination of the gift. The gift is intended to benefit you. Similarly, Estudei para passar no exame. (I studied to/in order to pass the exam.) The exam's successful completion is the explicit purpose, the target of the studying.por) or a direction/purpose (para).Formation Pattern
por is notable for its mandatory contractions with definite articles. These contractions are not optional; failing to use them makes your Portuguese sound unnatural and grammatically incorrect. When por precedes a definite article (o, a, os, as), it combines to form a new word. This phenomenon is common in Portuguese and contributes to the fluidity of the language.
Por + Definite Article | Contraction | Example (BP) | Example (EP) |
por + o | pelo | Andei pelo parque. (I walked through the park.) | Andei pelo parque. (I walked through the park.) |
por + a | pela | Viajei pela cidade. (I traveled through the city.) | Viajei pela cidade. (I traveled through the city.) |
por + os | pelos | Lute pelos seus sonhos. (Fight for your dreams.) | Lute pelos teus sonhos. (Fight for your dreams.) |
por + as | pelas | Obrigada pelas flores. (Thanks for the flowers.) | Obrigada pelas flores. (Thanks for the flowers.) |
pelo (por + o) once existed with an accent mark (pêlo) to differentiate it from the noun pelo (hair). However, with the Orthographic Agreement of 1990, the circumflex accent was removed, and differentiation now relies solely on context.
para does not contract with definite articles in standard modern Portuguese. Therefore, you will always see para o, para a, para os, para as, never pral or similar forms. While some informal speech might omit the vowel from para (e.g., pra o), this is considered non-standard and should be avoided in formal writing and by learners aiming for correct usage. This difference in contraction behavior is a useful mnemonic to distinguish the two prepositions.
Por can also combine with indefinite articles (um, uma, uns, umas), but these are not mandatory contractions in the same way as with definite articles. You will typically see por um, por uma, etc., retaining the separate words. For instance, Fui viajar por um mês. (I went traveling for a month.)
When To Use It
por in the context of favors and exchanges requires a detailed breakdown of its various functions. Each usage highlights por's role in indicating agency, cause, duration, or a transactional relationship.- 1Substitution or Agency (On behalf of / In place of): This is the core of
porwhen discussing favors. You perform an action that another person would typically do, or you represent them.
Eu trabalho pelo meu chefe hoje.(I'm working for/instead of my boss today.) – The action of working is a substitute for the boss's presence.Ele falou pela sua família no evento.(He spoke on behalf of his family at the event.) – He acted as a representative.Ela fez o projeto por mim, porque eu estava doente.(She did the project for me, because I was sick.) – She took on the task in your stead.
- 1Exchange or Price (In exchange for / For the price of): This function is fundamental to transactions, buying, selling, or bartering.
Pordenotes the compensation or equivalent value.
Comprei o carro por dez mil euros.(I bought the car for ten thousand euros.) – Ten thousand euros is the price paid.Troquei meu relógio pelo dele.(I exchanged my watch for his.) – A reciprocal swap of items.Vendemos a casa por um bom preço.(We sold the house for a good price.) – The price obtained for the house.
- 1Cause or Motivation (Because of / Due to / Out of):
Porexplains the reason or driving force behind an action or feeling. It signifies the origin or stimulus.
Chorei por alegria.(I cried from/out of joy.) – Joy is the cause of crying.Lutamos pela liberdade.(We fight for freedom.) – Freedom is the cause or motivation for the fight.A reunião foi adiada por problemas técnicos.(The meeting was postponed due to technical issues.) – Technical issues are the cause of the postponement.
- 1Means or Medium (By means of / Through):
Porindicates the method, channel, or instrument used to perform an action or transmit something.
Enviei o documento por e-mail.(I sent the document by email.) – Email is the medium of transmission.Viajamos pelo trem.(We traveled by train.) – Train is the mode of transport.Falei com ele pelo telefone.(I spoke with him on the phone.) – Telephone is the means of communication.
- 1Duration (For a period of time): While not directly related to favors/swapping, this is a very common use of
porand helps differentiate it fromparawhen indicating time frames.
Vou ficar aqui por uma semana.(I will stay here for one week.) – Specifies the duration of the stay.Ele morou em Portugal por dois anos.(He lived in Portugal for two years.) – Indicates the length of time he resided there.Trabalhei por oito horas seguidas.(I worked for eight consecutive hours.) – The span of the working period.
- 1Agent in Passive Voice (By): In passive constructions,
porintroduces the agent who performs the action.
A carta foi escrita por ela.(The letter was written by her.) – "She" is the agent performing the action of writing.O livro foi traduzido por um especialista.(The book was translated by a specialist.) – The specialist is the one who did the translating.
- 1Gratitude (
Obrigado por):Poris invariably used to express thanks for something.
Obrigado por vir.(Thanks for coming.) – Expressing thanks for the action of coming.Grato pela sua ajuda.(Grateful for your help.) – Expressing gratitude for the assistance.
Common Mistakes
por and para due to the ambiguity of the English word "for." The most pervasive errors stem from misunderstanding the fundamental difference between substitution/exchange (por) and destination/purpose (para).- 1The "Working For" Conundrum: A classic error is misusing
parawhenporis required to indicate substitution in a work context.
- Incorrect:
Trabalhei para o João ontem.(If meaning: I worked instead of João yesterday.) This incorrectly implies João is your employer or beneficiary of your work. - Correct:
Trabalhei pelo João ontem.(I worked instead of João yesterday.) This indicates you covered his shift; you performed his duties. - Contrast:
Trabalho para uma empresa multinacional.(I work for a multinational company.) Here,parais correct as the company is your employer, the entity you serve.
- 1Paying and Prices: Learners often misuse
parawhen expressing the price paid for an item.
- Incorrect:
Paguei 50 reais para a camisa.(This implies you gave 50 reais to the shirt, as if it were a recipient.) - Correct:
Paguei 50 reais pela camisa.(I paid 50 reais for the shirt.) This correctly indicates the exchange of money for the item. - Contrast:
Dei 50 reais para o meu irmão.(I gave 50 reais to my brother.) Here,parais correct because your brother is the recipient of the money.
- 1Gratitude (
Obrigado/a): A persistent error is usingparaafterObrigadoorObrigada.
- Incorrect:
Obrigado para sua ajuda. - Correct:
Obrigado pela sua ajuda.(Thank you for your help.)Por(and its contractions) is always required for expressions of gratitude, indicating the reason for the thanks.
- 1Direction vs. Passage: While
paraindicates a fixed destination (Vou para casa.),porimplies moving through or along a place, or indicating an approximate location.
- Incorrect:
Passamos para a floresta.(If meaning: We passed through the forest.) This sounds like the forest was a destination, not a route. - Correct:
Passamos pela floresta.(We passed through the forest.) This indicates traversing the space. - Contrast:
Ele está indo para o banco.(He is going to the bank.)Paraindicates the bank as the final destination.
- 1Purpose vs. Cause: Confusing the objective of an action with its underlying reason.
- Incorrect:
Estudei por passar no exame.(This implies the exam's passing was the cause of studying, which is illogical.) - Correct (Purpose):
Estudei para passar no exame.(I studied to pass the exam.) – The purpose of studying. - Correct (Cause):
Ele foi multado por estacionar em local proibido.(He was fined for parking in a prohibited place.) – The reason for the fine.
por) or a destination/purpose/recipient (para), learners can mitigate these common errors.Real Conversations
Understanding por and para in real-world contexts, beyond textbook examples, reinforces their usage and highlights subtle nuances. These examples reflect how native speakers naturally use these prepositions in various registers.
Casual Texting/Messaging (BP & EP):
- Posso ir por você no ensaio? (Can I go for/instead of you to rehearsal?) – Substitution. Here, por clearly offers to take someone's place.
- Te devo uma por essa! Valeu! (I owe you one for that! Thanks!) – Gratitude for a favor/action. Por links the thanks to the specific act.
- Troco meu turno por um favor depois. (I'll swap my shift for a favor later.) – Exchange. A conditional trade-off.
- Atrasado por causa do trânsito. (Late because of traffic.) – Cause. A common explanation for delays.
Work Emails/Professional Communication (BP & EP):
- Enviei o relatório pelo meu assistente, conforme solicitado. (I sent the report through/via my assistant, as requested.) – Means/Agency. The assistant acted as the channel or performed the action on your behalf.
- Reencaminhei o e-mail para todos os envolvidos. (I forwarded the email to all involved parties.) – Recipient/Destination. Para indicates the target audience.
- Agradeço pela sua colaboração neste projeto. (I thank you for your collaboration on this project.) – Gratitude. Standard formal expression.
- O prazo para entrega é sexta-feira. (The deadline for delivery is Friday.) – Deadline. Para sets a future limit.
Social Media/Online Interactions (BP & EP):
- Vote nos seus favoritos pelo link na bio! (Vote for your favorites via the link in the bio!) – Means. Pelo indicates the method of voting.
- Fazendo isso pelos meus seguidores! (Doing this for my followers!) – Motivation/Beneficiary (but often implies on behalf of if creating content for them). This is a slightly ambiguous case where para (for the benefit of) could also work, but por can imply working to please or represent them.
- Comprando ingressos para o show. (Buying tickets for the show.) – Purpose/Recipient. The show is the purpose of the tickets, or the tickets are for the show (as a destination).
Spoken Dialogue (BP & EP):
- Você pode pegar meu café por favor? (Can you get my coffee for me, please?) – Favor/Substitution. The speaker asks the other person to perform the action instead of them.
- Quanto pagaste por aquilo? (How much did you pay for that?) – Exchange/Price. Inquiring about the cost.
- Vamos passear pela praia. (Let's walk along the beach.) – Passage/Location. Pela indicates the path of movement.
- Ele veio para me ajudar. (He came to help me.) – Purpose. Para specifies the reason for coming.
Cultural Insight
por frequently appears in expressions of solidarity or collective action. For instance, Lutar pela justiça (To fight for justice) or Trabalhar por um futuro melhor (To work for a better future) utilizes por to denote the cause or the ideal that motivates the action, often implying acting on behalf of that cause or for its realization.Quick FAQ
por and para.por or para?No. The single English word "for" is highly ambiguous and covers semantic ground that Portuguese separates into distinct prepositions. Relying on a direct translation of "for" into Portuguese is a primary source of error. You must analyze the underlying meaning: is it an exchange, a cause, a duration, or a passage (por)? Or is it a destination, a purpose, a recipient, or a deadline (para)? Always prioritize the conceptual function over direct translation.
pelo and pela optional? Can I just say por o or por a?The contractions of por with definite articles (o, a, os, as) are mandatory in standard Portuguese. Saying por o or por a sounds extremely unnatural, grammatically incorrect, and can be difficult for native speakers to process. Always use pelo, pela, pelos, pelas where appropriate. The only exception would be in highly specific, often archaic or poetic, contexts, which are not relevant for B1 learners.
Obrigado para or Obrigado por?You always use Obrigado/a por (or its contractions pelo/pela/pelos/pelas) when expressing gratitude. For example, Obrigado por vir. (Thanks for coming.) or Obrigada pela sua ajuda. (Thanks for your help.) Para is never used in this context. The por here indicates the reason or cause for your thanks.
For "favors and swapping," think of por as indicating a substitution or an exchange. If you are doing something instead of someone, or giving something in return for something else, use por. If the action is directed to a person or for the benefit of someone/something as a recipient or ultimate goal, then para is more likely. A favor done por someone is usually taking their place or burden; a gift given para someone is for their direct possession or enjoyment.
por and para in this context?While there can be minor stylistic or idiomatic preferences, the fundamental grammatical rules for por and para regarding substitution, exchange, cause, destination, and purpose are consistent across Brazilian and European Portuguese. The contractions (pelo, pela, etc.) are also mandatory in both variants. Any differences are typically in verb conjugation, vocabulary, or the use of certain pronouns, rather than the core function of these prepositions.
Contractions of Por and Para
| Preposition | Masculine | Feminine |
|---|---|---|
|
Por
|
Pelo
|
Pela
|
|
Para
|
Para o
|
Para a
|
Common Informal Contractions
| Formal | Informal (Brazil) |
|---|---|
|
Para o
|
Pro
|
|
Para a
|
Pra
|
Meanings
These are the two most common prepositions in Portuguese that often confuse learners because they overlap with the English 'for'.
Exchange/Substitution
Trading one thing for another.
“Comprei este carro por dez mil reais.”
“Troquei o meu relógio por um livro.”
Purpose/Goal
Indicating the intended recipient or objective.
“Estudei para passar no exame.”
“Este presente é para a minha mãe.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Por + Noun
|
Faço por amor.
|
|
Affirmative
|
Para + Noun
|
Vou para casa.
|
|
Negative
|
Não + por
|
Não fiz por mal.
|
|
Question
|
Por + que
|
Por que você foi?
|
|
Question
|
Para + onde
|
Para onde você vai?
|
|
Contraction
|
Pelo/Pela
|
Pela manhã.
|
|
Informal
|
Pra
|
Pra você.
|
Formality Spectrum
Faço isto para o senhor. (Favor)
Faço isto para você. (Favor)
Faço isso pra você. (Favor)
Faço isso pra ti. (Favor)
Por vs Para Logic
Por
- Causa Cause
- Troca Exchange
Para
- Destino Destination
- Prazo Deadline
Examples by Level
Isto é para você.
This is for you.
Obrigado por tudo.
Thanks for everything.
Vou para casa.
I am going home.
Pago por isto.
I pay for this.
Estudo para aprender.
I study to learn.
Fiz isto por você.
I did this for you.
O trem passa por aqui.
The train passes through here.
É para amanhã.
It is for tomorrow.
Pelo que eu sei, ele vem.
From what I know, he is coming.
Trabalho para a empresa.
I work for the company.
Caminhamos pela praia.
We walked along the beach.
Ele foi substituído por outro.
He was replaced by another.
Para mim, isso não faz sentido.
To me, this makes no sense.
O projeto foi feito por eles.
The project was done by them.
Estamos prontos para partir.
We are ready to leave.
Por medo, ele não falou.
Out of fear, he didn't speak.
Por acaso você viu ele?
By chance did you see him?
Ele luta para alcançar seus objetivos.
He fights to reach his goals.
Por fim, chegamos ao destino.
Finally, we arrived at the destination.
A decisão foi tomada por unanimidade.
The decision was taken unanimously.
Para que serve este mecanismo?
What is this mechanism for?
Por mais que eu tente, não consigo.
No matter how much I try, I can't.
Ele foi eleito para o cargo.
He was elected to the position.
A obra foi elogiada por críticos.
The work was praised by critics.
Easily Confused
Both translate to 'for' in English.
Learners mix up the prepositional 'por que' with the conjunction 'porque'.
Both can indicate direction.
Common Mistakes
Vou por casa.
Vou para casa.
Isto é por você.
Isto é para você.
Estudo por aprender.
Estudo para aprender.
Obrigado para tudo.
Obrigado por tudo.
Para que você fez isso?
Por que você fez isso?
Vou para o parque por caminhar.
Vou para o parque para caminhar.
É por amanhã.
É para amanhã.
Pelo meu ponto de vista...
Para o meu ponto de vista...
Ele foi morto para um soldado.
Ele foi morto por um soldado.
Trabalho por dinheiro.
Trabalho para ganhar dinheiro.
Por fim, ele foi para o cargo.
Por fim, ele foi eleito para o cargo.
Para acaso, você viu?
Por acaso, você viu?
Ele luta por vencer.
Ele luta para vencer.
Sentence Patterns
Eu vou ___ ___.
Eu faço isso ___ ___.
___ ___ eu sei, ele vem.
___ ___ você estuda?
Real World Usage
Obrigado por tudo!
Trabalho para a empresa.
É para entregar aqui.
Vou para Lisboa.
Pra você.
Pago por cartão.
The 'Goal' Test
Avoid 'Para' for Cause
Contractions
Brazilian 'Pra'
Smart Tips
Always use 'para' + infinitive.
Always use 'por' + noun.
Remember 'pelo' = 'por' + 'o'.
Use 'Por que' for reasons.
Pronunciation
Contractions
Pronounce 'pelo' as /'pe.lu/ and 'pela' as /'pe.la/.
Question
Por que? ↑
Rising intonation for questions.
Memorize It
Mnemonic
Para is for the destination (the 'goal'), Por is for the path (the 'cause').
Visual Association
Imagine a map. 'Para' is the pin on the destination city. 'Por' is the winding road you take to get there.
Rhyme
Para é o destino, Por é o caminho.
Story
Maria went to the store (Para a loja). She bought a gift for her friend (Para a amiga). She paid with a card (Por cartão). She did it because she loves her (Por amor).
Word Web
Challenge
Write 5 sentences about your day using both prepositions.
Cultural Notes
The use of 'pra' is ubiquitous in speech and informal writing.
Speakers tend to use 'para' more formally and avoid 'pra' in writing.
Usage follows European Portuguese standards more closely.
Por comes from Latin 'per', and Para comes from 'pro' + 'ad'.
Conversation Starters
Para onde você quer viajar?
Por que você estuda português?
O que você faria por um milhão de reais?
Para você, qual é a importância da língua?
Journal Prompts
Common Mistakes
Test Yourself
Vou ___ casa.
Fiz isto ___ você.
Find and fix the mistake:
Vou por o trabalho.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Thanks for everything.
Answer starts with: Obr...
Match each item on the left with its pair on the right:
Por + o
A: Por que você estuda? B: Estudo ___ aprender.
Score: /8
Practice Exercises
8 exercisesVou ___ casa.
Fiz isto ___ você.
Find and fix the mistake:
Vou por o trabalho.
você / para / é / isto
Thanks for everything.
Por vs Para
Por + o
A: Por que você estuda? B: Estudo ___ aprender.
Score: /8
Practice Bank
10 exercisesNós passamos ___ parque. (We passed through the park)
Match the context:
foto / a / WhatsApp / mandei / Eu / pelo
I bought it for 5 euros.
Amando a viagem! Obrigada para as mensagens!
Translate: I speak for my group.
Ela tem muito carinho ___ avó.
He couldn't go because of the rain.
Troquei meu sanduíche ___ uma salada.
Eu estudei para três horas.
Score: /10
FAQ (8)
No, use 'por' for duration (e.g., 'por duas horas').
No, 'pra' is informal and mostly used in Brazil.
Use 'pelo' when 'por' is followed by a masculine noun.
It indicates the agent of the action.
No, use 'por' for reasons.
Yes, they avoid 'pra' in writing.
Use 'Por que' (two words).
Idioms like 'por acaso' are fixed phrases.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
por/para
Contractions differ (e.g., 'pelo' vs 'por el').
pour/par
French 'par' is less common than Portuguese 'por'.
für/durch
German grammar is case-driven.
ni/de/tame ni
Japanese is agglutinative.
li/bi
Arabic is a Semitic language.
wèi/yòng
Chinese has no prepositions in the same sense.
Learning Path
Prerequisites
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