Portuguese grammar

Like most Indo-European languages, including English, Portuguese classifies most of its lexicon into four word classes: verbs, nouns, adjectives, and adverbs. These are "open" classes, in the sense that they readily accept new members, by coinage, borrowing, or compounding. Interjections form a smaller open class.

There are also several small closed classes, such as pronouns, prepositions, articles, demonstratives, numerals, and conjunctions. A few grammatically peculiar words are difficult to categorize; these include cadê ("where is"—Braz., colloq.), tomara ("let's hope"), oxalá ("let's hope that"), and eis ("here is"; cf. Latin ecce and French voilà).

Within the four main classes there are many semi-regular mechanisms that can be used to derive new words from existing words, sometimes with change of class; for example, veloz ("fast") → velocíssimo ("very fast"), medir ("to measure") → medição ("measurement"), piloto ("pilot") → pilotar ("to pilot"). Finally, there are several phrase embedding mechanisms that allow arbitrarily complex phrases to behave like nouns, adjectives, or adverbs.

Following the general Indo-European pattern, the central element of almost any Portuguese clause is a verb, which may directly connect to one, two, or (rarely) three nouns (or noun-like phrases), called the subject, the object (more specifically, the direct object), and the complement (more specifically, the object complement or objective complement). The most frequent order of these elements in Portuguese is subject–verb–object (SVO, as in examples (1) and (2) below), or, when a complement is present, subject–verb–object-complement (SVOC — examples (3) and (4)):

(1) {A Maria}_S {ama}_V {o Paulo}_O, "Maria loves Paulo."

(2) {O pedreiro}_S {construiu}_V {a casa}_O, "The mason has constructed the house."

(3) {O presidente}_S {nomeou}_V o {Pedro}_O {ministro}_C, "The president appointed Pedro (as) minister."

(4) {Ela}_S {achou}_V {o livro}_O {uma chatice}_C, "She found the book a bore."

Any of the three noun elements may be omitted if it can be inferred from the context or from other syntactic clues; but many grammatical rules will still apply as if the omitted part were there.

A clause will often contain a number of adverbs (or adverbial phrases) that modify the meaning of the verb; they may be inserted between the major components of the clause. Additional nouns can be connected to the verb by means of prepositions; the resulting prepositional phrases have an adverbial function. For example:

Ele carregou {sem demora} a mala {para ela} {do carro} {até a porta}, "He carried {without delay} the bag {for her} {from the car} {to the door}."

Portuguese is a null subject language, meaning that it permits and sometimes mandates the omission of an explicit subject.

In Portuguese, the grammatical person of the subject is generally reflected by the inflection of the verb. Sometimes, though an explicit subject is not necessary to form a grammatically correct sentence, one may be stated in order to emphasize its importance. Some sentences, however, do not allow a subject at all and in some other cases an explicit subject would sound awkward or unnatural:

• "I'm going home" can be translated either as vou para casa or as eu vou para casa, where eu means "I".
• "It's raining" is está a chover in European Portuguese, or está chovendo in Brazilian Portuguese, neither of which occurs with an explicit subject. Some old Portuguese people say ele está a chover "it is raining", where ele "he/it" refers to the masculine subject o tempo "the weather". Nowadays this usage is uncommon and seen as old-fashioned.
• Que horas são? "what time is it?" (literally "what hours are they?"). Some old Portuguese people say que horas são ele?, where ele refers to o tempo "the time" (o tempo can also mean "the weather"). Nowadays this usage is uncommon and seen as old-fashioned.
• In European Portuguese, only in exceptional circumstances would "I'm going home; I'm going to watch TV" be translated as eu vou para casa; eu vou ver televisão. At least the second eu ("I") would normally be omitted, if not both. Meanwhile, in Brazilian Portuguese, the subject pronoun is more likely to be repeated.

As in other null subject language with a SVO word order, the subject is often postponed, mostly in existential sentences, in answers to partial questions and in contrast structures:

• Existem muitos ratos aqui! ("There are many mice here!") — Verb existem, subject ratos, complement aqui indicating place.
• Quem é que foi? Fui eu. ("Who was it? It was me.") — Verb fui, subject eu.
• Ela não comeu o bolo, mas comi-o eu. (European Portuguese) or ...mas eu comi (Brazilian Portuguese) ("She didn't eat the cake, but I did.") — Subject ela, negation não, verb comeu, object o bolo; the complement divides itself into: adversative conjunction mas, verb comi, object -o, subject eu.

Não ("no") is the natural negative answer to yes/no questions. As in Latin, positive answers are usually made with the inflected verb of the question in the appropriate person and number. Portuguese is one of the few Romance languages keeping this Latin peculiarity. The adverbs já ("already"), ainda ("yet"), and também ("too", "also") are used when one of them appears in the question.

Q: Gostaste do filme? A: Gostei. / Não.

Q: "Did you like the movie?" A: "Yes.", literally, "I liked." / "No."

Q: Eu não tinha deixado aqui uma chave? A: Tinhas!

Q: "Didn't I leave a key here?" A: "Yes, you did!", literally, "[You] did."

Q: Já leste este livro? A: Já. / Ainda não.

Q: "Have you already read this book?" A: "Yes", literally, "Already." / "Not yet."

The word sim ("yes") may be used for a positive answer, but, if used alone, it may in certain cases sound unnatural or impolite. In Brazilian Portuguese, sim can be used after the verb for emphasis. In European Portuguese, emphasis in answers is added with the duplication of the verb. In both versions of Portuguese, emphasis can also result from syntactical processes that are not restricted to answers, such as the addition of adverbs like muito ("much") or muitíssimo ("very much").

It is also acceptable, though sometimes formal, to use yes before the verb of the question, separated by a pause or, in writing, a comma. The use of sim before the verb does not add emphasis, and may on the contrary be less assertive.

Q: Gostou do filme? A: Gostei, sim!

Q: "Did you like the movie?" A:"Yes, I did!"

Q: Gostaste do filme? A: Gostei, gostei!

Q: "Did you like the movie?" A:"I did, I did!"

Q: Há comboios a esta hora? A: Há, há!

Q: "Are there any trains at this time?" A:"Yes, there are!"

Q: Ele gostou do filme? A: Sim, gostou...

Q:"Did he like the movie?" A: "He did, yes..."

Most adjectives and demonstratives, and all articles must be inflected according to the gender and number of the noun they reference:

esta linda casa branca ("this lovely white house")

este lindo carro branco ("this lovely white car")

estas lindas aves brancas ("these lovely white birds")

estes lindos gatos brancos ("these lovely white cats")

The agreement rules apply also to adjectives used with copulas, e.g. o carro é branco ("the car is white") vs. a casa é branca ("the house is white").

Portuguese nouns form their plurals by adding -s if the singular ends in a vowel, and -es if the singular ends in n, r or z. If the singular ends in s, then if the last syllable is stressed, the plural adds -es, and otherwise the plural is the same as the singular. Words ending in m change that m into ns, and words ending in l change that l into -is (e.g. animal > animais). Words ending in ão vary in how they form their plurals: some replace the ão with ães, others with ões, and others just add an -s like the other nouns ending in a vowel.

Grammatical gender of inanimate entities is sometimes different from that used in sister languages: thus, for example, Portuguese árvore ("tree") and flor ("flower") are feminine, while Spanish árbol and Italian fiore are masculine; Portuguese mar ("sea") and mapa ("map") are masculine, while French mer and mappe are feminine.

In many cases, the gender and number of a noun can be deduced from its ending: the basic pattern is "-o" / "-os" for masculine singular and plural, "-a" / "-as" for feminine. So, casa ("house"), mala ("suitcase"), pedra ("stone"), and inteligência ("intelligence") are feminine, while carro ("car"), saco ("bag"), tijolo ("brick"), and aborrecimento ("annoyance") are masculine. However, the complete rules are quite complex: for instance, nouns ending in -ção are usually feminine, except for augmentatives like bração ("big arm"). And there are many irregular exceptions. For words ending in other letters, there are few rules: flor ("flower"), gente ("folk"), nau ("ship"), maré ("tide") are feminine, while amor ("love"), pente ("comb"), pau ("stick"), café ("coffee") are masculine.

On the other hand, the gender of some nouns, as well as of first- and second-person pronouns, is determined semantically by the sex or gender of the referent: aquela estudante é nova, mas aquele estudante é velho ("this (female) student is new, but that (male) student is old"; or eu sou brasileiro ("I am Brazilian", said by a man) and eu sou brasileira (the same, said by a woman). Honorific forms of address such as Vossa Excelência ("Your Excellency") exhibit noun/adjective agreement internally, but require agreement according to the gender of the referent for other modifiers, as in Vossa Excelência está atarefado ("Your Excellency is busy").[2]

Also, many animate masculine nouns have specific feminine derivative forms to indicate female sex or social gender: lobo ("wolf" or "male wolf", masculine gender) → loba ("she-wolf", feminine), conde ("count", m.) → condessa ("countess", f.), doutor ("doctor" or "male doctor", m.) → doutora ("female doctor", f.), ator ("actor", m.) → atriz ("actress", f.), etc. The feminine noun derivations should not be confused with the adjectival gender inflections, which use different (and more regular) rules.

The Portuguese language makes abundant use of diminutives, which connote small size, endearment or insignificance. Diminutives are very commonly used in informal language. On the other hand, most uses of diminutives are avoided in written and otherwise formal language.

The most common diminutive endings are -inho and -inha, replacing -o and -a, respectively. Words with the stress on the last syllable generally have -zinho or -zinha added, such as café "coffee" and cafezinho "coffee served as a show of hospitality". In writing, a c (but not a ç) becomes qu in some words, like pouco ("few") and pouquinho ("very few"), in order to preserve the [k] pronunciation.

Possible endings other than -inho(a) are:

It is also possible to form a diminutive of a diminutive, e.g. "burriquito" (burro + -ico + -ito).

Portuguese diminutive endings are often used not only with nouns but also with adjectives, e.g. tonto/tontinho ("silly" / "a bit silly"), or verde/verdinho ("green" / "nicely green") and occasionally with adverbs, e.g. depressa/depressinha ("quickly") and some other word classes, e.g. obrigadinho—diminutive for the interjection obrigado "thanks". Even the numeral um (one) can informally become unzinho.

The most common augmentatives are the masculine -ão and the feminine -ona, although there are others, like -aço(a) e.g. mulher/mulheraça ("woman"); or -eirão, e.g. voz/vozeirão ("voice"), less frequently used. Sometimes the masculine augmentative can be applied to a feminine noun, which then becomes grammatically masculine, but with a feminine meaning, e.g. a mulher / o mulherão ("the woman" / "the big woman").

Demonstratives have the same three-way distinction as place adverbs:

este lápis – "this pencil" (near me)

esse lápis – "that pencil" (near you)

aquele lápis – "that pencil" (over there, away from both of us)

In colloquial Brazilian Portuguese, esse is often used interchangeably with este when there is no need to make a distinction. This distinction is usually only made in formal writing or by people with more formal education, or simply to emphasize the fact that it is near, as in esta sexta! ("next Friday!").

The demonstratives, like the articles, form contractions with certain preceding prepositions: de + este = deste ("of this"), de + esse = desse ("of that"), em + aquilo = naquilo ("in that thing"), a + aquela = àquela ("to that").

preposition

demonstrative pronoun

este

esta

estes

estas

isto

esse

essa

esses

essas

isso

aquele

aquela

aqueles

aquelas

aquilo

de

deste

desta

destes

destas

disto

desse

dessa

desses

dessas

disso

daquele

daquela

daqueles

daquelas

daquilo

em

neste

nesta

nestes

nestas

nisto

nesse

nessa

nesses

nessas

nisso

naquele

naquela

naqueles

naquelas

naquilo

a

-

-

-

-

-

-

-

-

-

-

àquele

àquela

àqueles

àquelas

àquilo

Demonstrative adjectives are identical to demonstrative pronouns: e.g. aquele carro "that car", and aquele "that one."

Related article: Romance copula

Portuguese has two main linking verbs: ser and estar (both translated "to be"). They developed from Latin SUM and STŌ, respectively (although the infinitive form ser actually comes from SEDĒRE). Most forms of ser come from SUM (infinitive ESSE).

• Estou tonta = "I'm dizzy"
• Sou tonta = "I'm silly"
• É sujo = "It's dirty" (i.e. "It's a dirty place" — characteristic)
• Está sujo = "It's dirty" (i.e. "(right now) The place is dirty" — state)
• É aberta = "She's open" (i.e. "She's an open sort of person" — characteristic)
• Está aberta = "It's open" (probably referring to a door or window — state)
• Ele é triste = "He is sad" (i.e. gloomy — characteristic)
• (Ele) Está triste = "He is sad" (i.e. feeling down — state)
• Como és? / Como você é? = "What are you like?" (i.e. "describe yourself" — characteristics)
• Como estás? / Como você está? = "How are you?" (i.e. "how are you doing?" — state)

With adjectives of appearance ("beautiful", etc.), ser means "to be", and estar means "to look".

• Que linda ela é! = "Wow, she's so beautiful" (characteristic)
• Que linda ela está! = "Wow, she's looking so beautiful" (state)

As in Spanish, the states of life and death are expressed with estar: Está vivo ("He is alive"). Está morto ("He is dead").

Ser is used with adjectives of fundamental belief (Não sou católico, "I'm not Catholic"), nationality (És português, "You are Portuguese"), sex/gender (É homem, "He's a man"), intelligence (Somos espertos, "We are smart"), etc.

Católico can also be used with estar, in which case it takes on a figurative meaning:

• Eu não estou muito católico = "I'm not feeling very dependable/trustworthy" (possibly ill or drunk).
• O tempo hoje não está muito católico = "The weather's not very nice today."

The infinitive is used, as in English, as a nominal expression of an action or state at an unspecified time, and possibly with an indefinite or implicit subject, e.g. queremos cantar ("we would like to sing"), cantar é agradável (lit. "to sing is pleasant"). Many of its uses would be translated into English by the "-ing" nominal form, e.g. mesa para cortar ("cutting table"), cantar é bom ("singing is good"), trabalhe sem parar ("work without pausing").

European Portuguese has the distinct feature of preferentially using the infinitive preceded by the preposition "a" in place of the gerund as the typical method of describing continuing action:

Estou lendo.

"I am reading." (Brazilian Portuguese)

Estou a ler.

"I am reading." (European Portuguese)

Estavam dormindo.

"They were sleeping." (Brazilian Portuguese)

Estavam a dormir.

"They were sleeping." (European Portuguese)

The gerund "-ndo" form is still correct in European Portuguese and it is used colloquially in the Alentejo region, but relatively rare (although its adverbial uses and the other participle forms are not uncommon). On the other hand, the "a + infinitive" form is virtually nonexistent in Brazil, and is considered incorrect in Brazilian Portuguese, though it can be found in 19th century literature.

A distinctive trait of Portuguese grammar (shared with the Galician language and Sardinian) is the existence of infinitive verb forms inflected according to the person and number of the subject:

É melhor voltar, "It is better to go back" (impersonal) or "It is better [that] I go back"

É melhor voltares, "It is better that you go back"

É melhor voltarmos, "It is better that we go back"

Depending on the context and intended sense, the personal infinitive may be forbidden, required, or optional.

Personal infinitive sentences may often be used interchangeably with finite subordinate clauses. In these cases, finite clauses are usually associated with the more formal registers of the language.

All Portuguese verbs in their infinitive form end in the letter r. Verbs are divided into three main conjugation classes according to the vowel in their infinitive ending:

• First conjugation: -ar
• Second conjugation: -er (also includes pôr and prefixed verbs in -por; see below)
• Third conjugation: -ir

The exceptional verb pôr ("to put") is placed by many grammarians in the -er conjugation class, for historical reasons: in older language the infinitive was poer, derived from Latin PONERE. It is the basis for several derived, prefixed verbs, most of which correspond to English verbs in -pose (although some differ in meaning):

The unprefixed pôr has the circumflex accent to distinguish it from the preposition por.

The -ar conjugation class is the largest of the three classes, and it is the only one open to neologisms, such as clicar ("to click" with a mouse).

Each conjugation class has its own distinctive set of some 50 inflectional suffixes: cant/ar → cant/ou ("he sang"), vend/er → vend/eu ("he sold"), part/ir → part/iu ("he left"). Some suffixes undergo various regular adjustments depending on the final consonant of the stem, either in pronunciation, in spelling, or in both. Some verbal inflections also entail a shift in syllable stress: 'canto ("I sing"), can'tamos ("we sing"), canta'rei ("I will sing"). See Portuguese verb conjugation.

Verbs with some irregular inflections number in the hundreds, with a few dozen of them being in common use. Some of the most frequent verbs are among the most irregular, including the auxiliaries ser ("to be"), haver ("there to be" or "to have"), ter ("to possess", "to have", "there to be" – in Brazilian Portuguese), ir ("to go").

The gerund form of a verb always ends with -ndo. It is used to make compound tenses expressing continuing action, e.g. ele está cantando ("he is singing"), ele estava cantando ("he was singing"); or as an adverb, e.g. ele trabalha cantando ("he works while singing"). It is never inflected for person or number.

In European Portuguese, the gerund is often replaced by the infinitive (preceded by "a") when used to express continuing action.[8]

The participle of regular verbs is used in compound verb tenses, as in ele havia cantado ("he had sung"). It can also be used as an adjective, and in this case it is inflected to agree with the noun's gender and number: um hino cantado ("a sung anthem", masculine singular), três árias cantadas ("three sung arias", feminine plural). Some verbs have two distinct forms (one regular, one irregular) for these two uses. Additionally, a few verbs have two different verbal participles, a regular one for the active voice, and an irregular one for the passive voice. An example is the verb matar (to kill): Bruto havia matado César ("Brutus had killed Cesar"), César foi morto por Bruto ("Cesar was killed by Brutus"). Regular participle forms always end with -ado, for first conjugation verbs, or with -ido, for second and third conjugation verbs.

Grammarians usually classify the verbal inflections (i.e. the synthetic verb forms) into the following moods, tenses, and non-finite forms:

• indicative mood, used in the main clauses of declarative sentences:
  • present tense: cantamos, "we sing"
  • past tenses:
    • preterite: cantámos (EP), cantamos (BP) "we sang"
    • imperfect: cantávamos, "we were singing"
    • pluperfect: cantáramos, "we had sung"
  • future tense: cantaremos, "we will sing"
• conditional mood:
  • conditional tense: cantaríamos, "we would sing"
• subjunctive mood used in certain subordinate clauses:
  • present subjunctive: que cantemos, "that we sing"
  • preterite subjunctive: se cantássemos, "if we sang"
  • future subjunctive: se cantarmos, "if we sing/should we sing"
• imperative mood: used to express a command, advice, encouragement, etc.:
  • positive: canta! "sing!"
  • negative: não cantes!" "don't sing!"
• verbals
  • infinitives:
    • impersonal: cantar, "to sing"
    • personal: cantarmos, "for us to sing", "that we sing" or "our singing"
  • participles:
    • present participle: cantando "singing"
    • past (or passive) participle: cantado "sung"

The conditional tense is usually called "future of the past" in Brazilian grammars, whereas in Portugal it is usually classified as a separate "conditional mood". Portuguese grammarians call subjunctive "conjuntivo"; Brazilians call it "subjuntivo".

Note that the synthetic future and conditional have largely disappeared from everyday speech. The synthetic future is generally replaced by ir + infinitive (e.g. vou cantar "I will sing"), while the conditional is replaced either by the imperfect (especially in its modal use; se você me desse dinheiro, eu cantava "if you gave me money, I would sing") or by the imperfect of ir + infinitive (in its non-modal, "future of the past" usage; ele disse que ia cantar "he said that he would sing"). However, the synthetic future subjunctive is still in common use (e.g. se você for "if you should go"). The synthetic future and conditional of verbs with one-syllable infinitives also sometimes occur (e.g. será/seria "it will/would be" or in the compound tenses terá/teria sido "it will/would have been").

In regular verbs, the personal infinitive is identical to the subjunctive future tense; but they are different in irregular verbs: quando formos ("when we go", subjunctive) versus é melhor irmos ("it is better that we go").

There are also many compound tenses expressed with inflected forms of the auxiliary verbs ser and estar (variants of "to be"), haver and ter (variants of "to have").

Portuguese has many compound verb tenses, consisting of an auxiliary verb (inflected in any of the above forms) combined with the gerund, participle or infinitive of the principal verb.

The basic auxiliary verbs of Portuguese are ter, haver, ser, estar and ir. Thus, for example, "he had spoken" can be translated as ele havia falado or ele tinha falado.

Tenses with ter/haver + past participle (compound tenses):

• Preterite perfect indicative – temos falado ("we have been speaking"; see "Preterite vs. present perfect" below). Haver is not used nowadays. This tense may also be equivalent to the simple preterite for some fixed expressions, such as Tenho dito/concluído.
• Pluperfect indicative – tínhamos/havíamos falado ("we had spoken")
• Anterior pluperfect indicative – tivéramos/houvéramos falado ("we had spoken", literary use only)
• Future perfect indicative – teremos/haveremos falado ("we will have spoken")
• Conditional perfect – teríamos/haveríamos falado ("we would have spoken")
• Preterite perfect subjunctive – desde que tenhamos/hajamos falado ("provided that we have spoken")
• Pluperfect subjunctive – se/que tivéssemos/houvéssemos falado ("if/that we had spoken")
• Future perfect subjunctive – se/quando tivermos/houvermos falado ("if/when we have spoken")
• Personal perfect infinitive – termos/havermos falado ("for us to have spoken")

With no inflection:

• Impersonal perfect infinitive – ter/haver falado ("to have spoken")
• Perfect gerund – tendo/havendo falado ("having spoken")

In addition to the compound forms for completed past actions, Portuguese also retains a synthetic pluperfect: so, ele tinha falado and ele havia falado ("he had spoken") can also be expressed as ele falara. However, the simple (one-word) pluperfect is losing ground to the compound forms. While pluperfect forms like falara are generally understood, their use is limited mostly to some regions of Portugal and to written language. In Brazil, they are used nearly exclusively in the printed language, though even in that environment the -ra synthetic pluperfect has been losing ground to the compound form using tinha in the last decades.

The simple past (or pretérito perfeito simples in Portuguese) is widely used, sometimes corresponding to the present perfect of English (this happens in many dialects of American Spanish, too).

A present perfect also exists (normally called pretérito perfeito composto), but it has a very restricted use, denoting an action or a series of actions which began in the past and are expected to continue into the future, but will stop soon. For instance, the meaning of "Tenho tentado falar com ela" may be closer to "I have been trying to talk to her" than to "I have tried to talk to her", in some contexts.

Portuguese originally constructed progressive tenses with a conjugated form of the verb "to be", followed by the gerund of the main verb, like English: e.g. Eu estou trabalhando "I am working" (cf. also the corresponding Italian phrase: (Io) sto lavorando). However, in European Portuguese an alternative construction has appeared, formed with the preposition a followed by the infinitive of the main verb: e.g. Eu estou a trabalhar.[8] This has replaced the ancient syntax in central and northern Portugal. The gerund may also be replaced with a followed by the infinitive in less common verb phrases, such as Ele ficou lá, trabalhando / Ele ficou lá, a trabalhar "He stayed there, working". However, the construction with the gerund is still found in southern and insular Portugal and in Portuguese literature, and it is the rule in Brazil.

estou falando or estou a falar ("I am speaking")

estava falando/ a falar (imperfective: "I was speaking" [at the moment])

estive falando/ a falar (perfective: "I was speaking [for a while]" / "I have been speaking" [for a while])

estivera falando/ a falar ("I had been speaking")

estarei falando/ a falar ("I will be speaking")

esteja falando/ a falar ("[that] I/he/she be speaking"; or "am" or "is speaking")

se estivesse falando/ a falar ("if I were speaking")

quando estiver falando/ a falar ("when you are speaking" [in the future])

estar falando/ a falar ("to be speaking")

Tenses with ir + infinitive

vamos falar ("we will speak", "we are going to speak")

íamos falar ("we were going to speak")

iríamos falar ("we would speak", "we would be going to speak")

In the spoken language, the construction ir + infinitive almost completely replaces the use of the synthetic future (e.g. vamos falar rather than falaremos).

Tenses with multiple auxiliaries:

teríamos estado falando/a falar ("we would have been speaking")

tenho estado falando/a falar ("I have been speaking [until now]")

An active clause with a transitive verb and direct object can be transformed into a passive clause much the same as is done in English: the original object becomes the subject; the verb is replaced by ser (in the same mood and tense) followed by the past participle of the original verb; and the original subject may become an adverbial complement with the preposition por ("by"):

O rato comeu o queijo ("The mouse ate the cheese")

O queijo foi comido pelo rato ("The cheese was eaten by the mouse")

Aquela senhora cantará a ária ("That lady will sing the aria")

A ária será cantada por aquela senhora ("The aria will be sung by that lady")

Se você cantasse a ária, ele ficaria ("If you were to sing the aria, he would stay")

Se a ária fosse cantada por você, ele ficaria ("If the aria were to be sung by you, he would stay")

As in Spanish, there is also—for third-person objects, and when the agent is not expressed—a "reflexive" passive, which uses the pronoun se:

Fizeram-se planos e criaram-se esperanças. ("Plans were made and hopes were created.")

The same construction extends to some intransitive verbs, in which case they are rendered "impersonal", in the sense that their subject is not expressed:

Comeu-se, bebeu-se e bailou-se. ("There was eating, drinking, and dancing.")

Related article: Subjunctive

The Portuguese subjunctive mood is used mainly in certain kinds of subordinate clauses. There are three synthetic subjunctive inflections, conventionally called "present", "past" and "future". The rules of usage, in broad terms, are the following:

• The present subjunctive is used in clauses, often introduced with que ("that"), which express generally non-assertive notions, such as wishes, orders, possibilities, etc.:

quero que cante, "I want her/him to sing"

supondo que cante, "assuming that he/she will sing"

ele será pago, cante ou não, "he will be paid, whether he sings or not"

• The past subjunctive is used for adverbial subordinate clauses, introduced with se ("if") or equivalent, that are conditions for a main cause in the conditional tense.

se cantasse, seria famoso ("if he/she sang [if he/she were a singer], he/she would be famous")

se cantasse, teríamos aplaudido ("if he/she had sung, we would have applauded")

It is also used for noun clauses, introduced with que, that are the object of past wishes or commands:

esperávamos que cantasse ("we hoped that he would sing")

eu mandei que cantassem ("I ordered them to sing")

• The future subjunctive is an uncommon feature among Indo-European languages. It is used in adverbial subordinate clauses, usually introduced by se ("if") or quando ("when"), or in adjectival subordinate clauses that express a neutral or expected condition for a present- or future-tense main clause:

se cantarmos, seremos pagos ("If we (should) sing, we will be paid")

se cantarmos, ele fica ("If we (should) sing, he stays")

quando cantarmos, ele escutará ("When we (should) sing, he will listen")

• Often, the option between indicative and subjunctive depends on whether the speaker does or does not endorse the proposition expressed by the subordinate clause:

Admito que ele roubou a bicicleta. ("I admit that he stole the bicycle.")

Admito que ele possa ter roubado a bicicleta. ("I admit that he could have stolen the bicycle.")

• In relative clauses, the option between indicative and subjunctive depends on whether the speaker does or does not identify a single object with the property expressed by the relative clause:

Ando à procura de um cão que fala! ("I'm looking for a certain dog which can speak!")

Ando à procura de um cão que fale! ("I'm looking for any dog that speaks!")

More on the subjunctive mood in Portuguese can be found at Wikibooks: Variation of the Portuguese Verbs.

Portuguese has many adjectives that consist of a verbal stem plus an ending in -nte, which are applied to nouns that perform the action of the verb; e.g. dançar ("to dance") ~ areia dançante ("dancing sand"), ferver ("to boil") ~ água fervente ("boiling water").

However, those adjectives were not always derived from the corresponding Portuguese verbs. Most of them were directly derived from the accusatives of the present participles of Latin verbs, a form which was not retained by Portuguese. Thus, for example, Portuguese mutante ("changing", "varying") does not derive from the Portuguese verb mudar ("to change"), but directly from the Latin accusative present participle mutantem ("changing"). On the other hand, those pairs of words were eventually generalized by Portuguese speakers into a derivational rule, that is somewhat irregular and defective but still productive. So, for example, within the last 500 years we had the derivation pï'poka (Tupi for "to pop the skin") → pipoca (Portuguese for "popcorn") → pipocar ("to pop up all over") → pipocante ("popping up all over").

Similar processes resulted in many other semi-regular derivational rules that turn verbs into words of other classes, as in the following examples:

clicar ("to click") → clicável ("clickable")

vender ("to sell") → vendedor ("seller")

encantar ("to enchant") → encantamento ("enchantment")

destilar ("to distill") → destilação ("distillation")

The latter rule is quite productive, to the point that the pervasive -ção ending (derived from Latin -tione) is a visually striking feature of written Portuguese.

A specific feature of Portuguese, unusual among the Romance languages, is the placement of pronominal suffixes between the verb stem and the tense/person inflection in future and conditional verb forms. In Brazilian Portuguese it is limited to extremely formal and mostly written style. It has been losing ground in European Portuguese as well:[9]

• Ela levá-lo-ia ("She take-it-would" – "She would take it").
• Eles dar-no-lo-ão ("They give-us-it-will" – "They will give it to us").