Portuguese Grammar Basics
Portuguese grammar shares its Latin roots with Spanish, French, and Italian, but has a few features all its own — including the personal infinitive, a verb form no other major Romance language uses. This guide covers the essential grammar structures: noun gender, articles, verb groups, the ser vs. estar distinction, and what makes Portuguese grammar unique.
Learn from Your Home Screen
Lingo puts new words on your Home Screen with pronunciation and translations — so you learn 30 languages without even opening the app.
Gender and Articles
Every noun in Portuguese is either masculine or feminine. The definite articles o (masculine) and a (feminine) mark the gender, with plurals os and as.
General rule: nouns ending in -o are usually masculine, nouns ending in -a are usually feminine. Nouns ending in -ção (like nação, estação) are almost always feminine. Nouns ending in -ade (cidade, universidade) are also feminine.
The Three Verb Groups
Portuguese verbs fall into three conjugation groups based on their infinitive ending. Here is the present tense for one regular verb from each group:
-AR verbs (falar — to speak): eu falo, tu falas, ele/ela fala, nós falamos, eles/elas falam
-ER verbs (comer — to eat): eu como, tu comes, ele/ela come, nós comemos, eles/elas comem
-IR verbs (partir — to leave): eu parto, tu partes, ele/ela parte, nós partimos, eles/elas partem
Practice These Words in Lingo Widget
Home screen widgets, daily vocabulary, and 30 languages to explore.
Ser vs. Estar — Two Ways to “Be”
Like Spanish, Portuguese has two verbs meaning “to be.” Getting the distinction right is one of the most important grammar skills.
Ser — for permanent or defining characteristics:
- Identity: Eu sou brasileiro (I am Brazilian)
- Profession: Ela é médica (She is a doctor)
- Origin: Nós somos de Lisboa (We are from Lisbon)
- Time: São três horas (It is three o’clock)
Estar — for temporary states and locations:
- Feelings: Estou feliz (I am happy)
- Location: O livro está na mesa (The book is on the table)
- Condition: A sopa está quente (The soup is hot)
Some adjectives change meaning depending on ser or estar. Ser chato means "to be boring" (personality). Estar chato means "to be annoying" (right now). Ser pronto does not exist — use estar pronto for "to be ready."
The Personal Infinitive
This is Portuguese’s most distinctive grammar feature. The personal infinitive is an infinitive form that conjugates for each person, allowing you to simplify sentences that other languages need subjunctive clauses for:
- É importante falar (It is important to speak — general)
- É importante falares (It is important for you to speak)
- É importante falarmos (It is important for us to speak)
No other major Romance language has this feature. It makes Portuguese uniquely flexible in expressing who should do what, without needing a full subordinate clause with “que” and a subjunctive verb.
Sentence Structure
Portuguese follows Subject-Verb-Object word order, like English. Questions can be formed simply by changing intonation (rising at the end) or using question words:
- Onde — Where (Onde é o banheiro?)
- Quando — When (Quando você chega?)
- Por que / Porquê — Why / Because
- Como — How (Como se chama?)
Frequently Asked Questions
What is the personal infinitive in Portuguese?
The personal infinitive (infinitivo pessoal) is a verb form unique to Portuguese among Romance languages. It is an infinitive that conjugates for person: falar (to speak), falares (for you to speak), falarmos (for us to speak). It simplifies many subordinate clauses.
How many verb groups does Portuguese have?
Portuguese has three verb groups based on infinitive endings: -ar (falar, to speak), -er (comer, to eat), and -ir (partir, to leave). The -ar group is the largest and most regular. New verbs entering the language almost always follow the -ar pattern.
What is the difference between ser and estar?
Both mean "to be." Ser is for permanent or inherent characteristics: nationality, profession, identity (Eu sou brasileiro). Estar is for temporary states, locations, and conditions (Eu estou cansado = I am tired). Some adjectives change meaning depending on which one you use.
Is Portuguese grammar harder than Spanish grammar?
Portuguese grammar is slightly more complex than Spanish. It has the personal infinitive (unique to Portuguese), a more complex subjunctive system, and the future subjunctive tense which Spanish no longer uses in everyday speech. However, the overall structure is very similar.
How does noun gender work in Portuguese?
Every Portuguese noun is either masculine or feminine. Most nouns ending in -o are masculine (o livro, the book) and most ending in -a are feminine (a mesa, the table). Exceptions exist, and some endings like -ção are predictably feminine.