Introduction
Learning how to compare things in Portuguese unlocks everyday conversation skills. This guide explains Portuguese comparison structures for more, less, and as, focusing on clear grammar rules and natural Brazilian Portuguese examples so English-speaking learners can start using comparisons confidently.
Overview: Types of Comparisons in Portuguese
Portuguese offers three basic comparison types: comparing quantity or degree (more/less), equality (as…as), and superiority/inferiority with nouns and verbs. Each type uses specific words and structures. Understanding when to use adjectives, adverbs, nouns, verbs, and prepositions is essential to form correct sentences.
Key words to know
Some important Portuguese words appear throughout examples.
mais — more
menos — less
tão — so/that/used in equality with adjectives and adverbs
tanto(s)/tanta(s) — so much/many/used with nouns or verbs
como — as/like/used in equality and with verbs
do que — than/used in comparisons of superiority or inferiority
Comparisons of Superiority: More and Less
To say something is more or less than something else, Portuguese typically uses mais or menos followed by an adjective, adverb, or noun, then the preposition do que for comparisons between two elements.
Adjective and adverb comparisons
Structure: Subject + verb + mais/menos + adjective/adverb + do que + second element.
Example with adjective:
Ele é mais alto do que eu.
Example with adverb:
Ela dirige menos devagar do que antes.
Notes: Adjectives agree in gender and number with the noun they modify. Adverbs do not change.
Noun comparisons
When comparing quantities of nouns, use mais or menos + de + noun when a number or quantity follows, but use do que when comparing two entities directly.
Example comparing two people:
João tem mais livros do que Maria.
Example indicating quantity (without a second compared element):
Tenho mais de dez livros.
Important: Use de after mais/menos when a specific quantity follows, and do que when comparing items.
Verb comparisons
To compare actions, use verb + mais/menos + que. Often no do is required because the structure compares verbs, not nouns.
Example:
Ele estuda mais do que trabalha.
Nós trabalhamos menos do que antes.
Both forms with or without do can appear in colloquial speech, but formal grammar favors do que after verb comparisons to mark the comparison clearly.
Equality: Using As in Portuguese
Equality comparisons express that two things are equal in degree, quantity, or quality. Portuguese handles equality differently depending on whether you compare adjectives/adverbs, nouns, or verbs.
Adjectives and adverbs: tão…como / tão…quanto
Use tão + adjective/adverb + como (or quanto in some regions) to say as…as.
Example with adjective:
Ela é tão inteligente quanto o irmão.
Example with adverb:
Ele fala tão bem como o professor.
Notes: tão does not change with gender or number. Both como and quanto are accepted in Brazil, though como is more common in everyday speech.
Nouns: tanto(s)/tanta(s) … quanto/como
When comparing quantities of nouns, use tanto, tanta, tantos, or tantas to agree in gender and number with the noun, followed by quanto or como.
Example singular feminine:
Ela tem tanta paciência quanto a professora.
Example plural masculine:
Eles compraram tantos livros quanto nós.
Usage tip: tanto behaves like an adjective here, so agreement is important.
Verbs: tanto quanto / tanto como
To compare actions, use tanto quanto or tanto como after a verb.
Example:
Eu estudo tanto quanto você.
Ela trabalha tanto quanto antes.
Notes: No agreement is necessary because tanto here functions as an adverbial quantifier for the verb.
Comparative Structures with Nouns and Prepositions
Some comparisons use prepositions or different word order, especially with adjectives that require prepositions in Portuguese. Pay attention to verbs and adjectives that take prepositions.
Adjectives that take prepositions
Certain adjectives require a preposition when followed by a noun or pronoun; for comparisons, keep the preposition. For example, the adjective interessado commonly appears with em.
Example:
Ela está mais interessada em música do que em arte.
Explanation: The preposition em remains because it is part of the adjective’s complementation.
Use of de and do
Remember the difference between de and do. Do is the contraction of de + o and changes by gender/number: do, da, dos, das. When comparing two specific nouns, use do que or the appropriate contraction like da que is not correct — instead you use do que, or restructure the sentence.
Correct:
Ele é mais rápido do que o carro da vizinha.
Incorrect:
Ela é mais alta da que a irmã. (wrong)
Better:
Ela é mais alta do que a irmã.
Irregular Comparisons and Exceptions
Some comparisons are irregular in Portuguese. Instead of using mais + adjective, Portuguese sometimes has irregular comparative forms inherited from Latin. These are less common in spoken Brazilian Portuguese but appear in formal writing.
Common irregular comparatives
Examples include:
bom -> melhor (good -> better)
ruim -> pior (bad -> worse)
grande -> maior (big -> bigger)
pequeno -> menor (small -> smaller)
Use these irregular forms without mais or do que, though you can still add do que for clarity when comparing two things.
Example:
Este livro é melhor do que aquele.
Essa situação é pior do que eu pensei.
Comparative of equality alternative with igual a
To say two things are equal in a more literal or formal way, use igual a + noun or pronoun.
Example:
Meu carro é igual ao seu.
Notes: Use the appropriate contraction of de + o when necessary: igual ao, igual à, iguais aos, iguais às.
Practical Examples and Contextual Notes
Below are real Brazilian Portuguese sentences showing typical uses and small notes about tone and formality.
Comparing people or objects:
O restaurante de ontem foi mais caro do que eu esperava.
Comparing abilities or skills:
Ela canta tão bem quanto a profissional.
Comparing quantities with agreement:
Nós temos tantas opções quanto antes.
Using irregular comparative:
Este problema é menor do que parecia.
Verb comparison in conversational speech:
Eu trabalho mais do que durmo ultimamente.
Formal equality with igual a:
O resultado foi igual ao do ano passado.
Usage and cultural notes
Brazilian Portuguese tends to favor straightforward structures in speech: mais…do que and tão…como are very common. In informal contexts, speakers sometimes drop do and say mais que, especially in rapid conversation. In writing and formal speech, keep the full form do que to be grammatically clear.
Also, regional variation exists. Some speakers prefer quanto over como in equality constructions; both are correct, but como is more widespread in Brazil for everyday comparisons.
Common Mistakes and How to Avoid Them
1. Confusing de and do: Use de for quantities and do que when directly comparing two elements.
Wrong: Tenho mais livros que vinte.
Right: Tenho mais de vinte livros.
2. Forgetting agreement with tanto/a(s): Remember tanto must agree with the noun it modifies.
Wrong: Ela tem tanto paciência quanto a mãe.
Right: Ela tem tanta paciência quanto a mãe.
3. Using mais + irregular comparative: Do not use mais before irregular comparatives like melhor or pior.
Wrong: Ele é mais melhor do que antes.
Right: Ele é melhor do que antes.
Conclusion
Mastering Portuguese comparison structures helps make speech and writing clearer and more precise. Remember the basic tools: mais, menos, tão, tanto(s)/tanta(s), como, and do que. Pay attention to agreement, irregular comparatives, and when to use de versus do. With practice, using mais, tão, and tanto will become natural in everyday Brazilian Portuguese conversations.
