Introduction
Mastering Portuguese preposition contractions is essential for speaking and reading natural Brazilian Portuguese. This guide explains when and how prepositions combine with articles and pronouns, with clear rules, examples, and cultural notes to help beginners and intermediate learners sound more fluent.
- What are preposition contractions?
- The preposition de
- The preposition em
- The preposition a
- The preposition por
- Contractions with demonstratives and pronouns
- When not to contract
- Pronunciation tips
- Common mistakes to avoid
- Useful phrase list with contractions
- Stylistic and cultural notes
- Brief comparison with Spanish and English
- Final tips for learners
- Conclusion
What are preposition contractions?
In Portuguese, certain prepositions merge with definite articles and some pronouns to form contractions. These fused forms occur frequently in everyday Brazilian Portuguese and are not optional in standard grammar. Learning them helps with comprehension and produces more natural speech.
Main prepositions that contract
The most common prepositions that form contractions are de, em, a, and por. Each can combine with the definite articles o, a, os, and as and with certain pronouns. Below we break down each preposition with rules and examples.
The preposition de
De indicates possession, origin, material, cause, and more. It contracts with articles and some pronouns.
De + definite articles
When de meets an article, it contracts as follows:
de + o = do
de + a = da
de + os = dos
de + as = das
Examples:
Eu venho do mercado. (I come from the market.)
O livro da professora é interessante. (The teacher’s book is interesting.)
As chaves dos carros estavam no estacionamento. (The car keys were in the parking lot.)
As fotos das férias ficaram ótimas. (The vacation photos turned out great.)
De + pronouns
With pronouns, de sometimes contracts or forms special compounds. For example:
de + mim = de mim (no contraction)
de + ti = de ti (informal, European Portuguese; in Brazil, use você)
de + ele = dele (note: this is a single word but not considered a contraction with an article)
de + ela = dela
Examples:
Isso é para você, não é dele. (That is for you, not his.)
A casa é dela. (The house is hers.)
The preposition em
Em indicates location, time, or involvement. It also contracts with articles.
Em + definite articles
Em contracts with articles as follows:
em + o = no
em + a = na
em + os = nos
em + as = nas
Examples:
Ele está no escritório. (He is in the office.)
Ela mora na rua principal. (She lives on the main street.)
Os livros estão nos armários. (The books are in the lockers.)
As flores ficam nas janelas. (The flowers go on the windowsills.)
Em + pronouns and contractions with verbs
Unlike de, em generally does not form special possessive pronouns. However, combinations with motion verbs and adverbs are common:
Entrou no quarto e ficou lá. (He entered the room and stayed there.)
Ela colocou os livros na mesa. (She put the books on the table.)
The preposition a
A indicates direction, destination, or time. It contracts with definite articles and with the personal pronoun a in third person is a bit different.
A + definite articles
These are the contractions with articles:
a + o = ao
a + a = à (note the accent)
a + os = aos
a + as = às
Examples:
Vou ao banco. (I am going to the bank.)
Cheguei à festa ontem. (I arrived at the party yesterday.)
Ela falou aos amigos sobre a viagem. (She told the friends about the trip.)
As respostas foram às perguntas do teste. (The answers were to the test questions.)
Accent on à
The grave accent on à distinguishes the contraction from the preposition alone. Portuguese uses the accent to show that a plus a have fused. In speech the meaning is clear from context, but in writing the accent is required.
Special note: a + pronouns
The preposition a can combine with object pronouns in clitic forms in old or very formal usages, but in modern Brazilian Portuguese typical combinations are with articles and indirect objects indicated by pronouns such as lhe(s):
Vou dar o presente a ela. = Vou dar o presente a ela or Posso dar-lhe o presente. (I can give her the gift.)
The preposition por
Por indicates cause, means, duration, or exchange. It rarely forms contractions with articles, but por + o can become pór or pelo depending on register.
Por + definite articles
Common contractions include:
por + o = pelo
por + a = pela
por + os = pelos
por + as = pelas
Examples:
Ele passou pelo parque. (He passed through the park.)
Essa música é cantada pela cantora famosa. (This song is sung by the famous singer.)
Fiz isso pelas crianças. (I did this for the children.)
Por vs para
In many contexts both por and para can translate to for in English, but they have different uses. Use por for cause, exchange, and duration; use para for destination, goal, or recipient. Choosing the wrong one can change the meaning.
Contractions with demonstratives and pronouns
Certain contractions occur between prepositions and demonstrative pronouns or combined pronouns. Examples include:
em + isto/isso/aquele usually stays separate: em isto, em isso, em aquele (though rarely used)
de + isto/isso = disso (often one word)
a + isso = àquilo in some contexts
Examples:
Não gosto disso. (I don’t like that.)
Ele falou dela, não de mim. (He spoke about her, not about me.)
When not to contract
Not all preposition + article combinations contract. For example, proper nouns that start with a vowel sometimes keep the preposition separate, especially in formal writing or for clarity. Also, possessive combinations with personal pronouns do not always form contractions.
Examples where contraction is required:
Vou ao médico. (I am going to the doctor.)
Examples where contraction is not used or to be careful:
Referir-se a África can be written as referir-se à África or referir-se a África depending on stylistic choices, but standard Brazilian Portuguese requires the contraction for articles: referir-se à África.
Pronunciation tips
In spoken Brazilian Portuguese, contractions often create a single fluid syllable. For example, no sounds like [nu] with nasalization depending on the regional accent, and ao blends the vowel sounds. Listening to native speakers helps internalize these connected forms.
Regional variations
Some contractions are pronounced slightly differently across Brazil. Northeastern accents may vocalize vowels distinctly, while Southeastern speakers might reduce certain vowels. These variations do not change the written forms but are useful to recognize when listening.
Common mistakes to avoid
1) Forgetting the grave accent on à when contracting a + a.
2) Mixing up por and para — remember cause vs destination.
3) Using English logic — in English you might say at the park; in Portuguese you must use the contracted form no/na when combining with articles.
4) Omitting contractions with articles — writing de o instead of do looks unnatural and is incorrect in standard writing.
Useful phrase list with contractions
Here are practical sentences you will hear daily:
Estou no trabalho agora. (I am at work now.)
Ela veio do Rio de Janeiro. (She came from Rio de Janeiro.)
Fomos à praia no fim de semana. (We went to the beach on the weekend.)
O presente é para você, não dele. (The gift is for you, not his.)
Passamos pelo supermercado antes de chegar em casa. (We passed by the supermarket before arriving home.)
Stylistic and cultural notes
In casual spoken Brazilian Portuguese, contractions are so common that using the separate preposition and article can sound overly formal or foreign. Brazilians often drop or reduce syllables in fast speech, making contractions blend even more. In formal writing, always use the correct written contractions, including accent marks.
Historical note
Preposition contraction is a characteristic inherited from Latin and evolved over centuries. Contemporary usage is standardized in grammars and dictionaries, but regional speech preserves many interesting phonetic variations.
Brief comparison with Spanish and English
English rarely contracts prepositions and articles. Spanish has similar contractions: de + el = del and a + el = al, which are analogous to Portuguese do and ao. Noting these similarities helps learners transfer knowledge between Romance languages, but be careful with forms that exist in one language and not the other.
Final tips for learners
– Practice listening to Brazilian Portuguese podcasts or videos and note contracted forms.
– Read newspapers or simple texts and underline preposition contractions to see them in context.
– Use flashcards for the basic contraction patterns: do/da/dos/das, no/na/nos/nas, ao/à/aos/às, pelo/pela/pelos/pelas.
– Pay attention to accent marks, especially the grave accent on à.
Conclusion
Understanding Portuguese preposition contractions is a practical step toward fluency in Brazilian Portuguese. Once you learn the main patterns for de, em, a, and por, you will recognize and use these forms naturally in speech and writing. Regular exposure and listening practice will make contractions feel intuitive and improve comprehension and expression.
