por semana

The Portuguese phrase por semana is a fundamental adverbial locution used to express frequency, distribution, or rate within the timeframe of a single week. To an English speaker, it translates most directly to per week, a week, or weekly. Understanding this phrase is essential because it governs how we talk about our routines, professional obligations, financial commitments, and lifestyle habits. In Portuguese, the preposition por acts as a distributive marker. Unlike in English, where we might say 'once a week' using the indefinite article 'a', Portuguese requires the preposition to link the count to the time unit. This is a common point of confusion for beginners who might try to say 'uma vez uma semana', which is incorrect. Instead, 'uma vez por semana' is the standard and only natural way to express this frequency.

Temporal Distribution

This describes how many times an event occurs within the seven-day cycle. For example, 'Eu malho três vezes por semana' (I work out three times a week).

The usage of por semana extends beyond just simple frequency. It is also the standard way to discuss rates in professional settings. If you are negotiating a contract in Brazil or Portugal, you might discuss your 'ganho por semana' (earnings per week) or 'horas de trabalho por semana' (work hours per week). It provides a specific metric that is smaller than a month but larger than a day, making it the ideal middle-ground for planning and scheduling. In many Lusophone cultures, the week is the primary unit for organizational planning, especially in schools and gyms. Therefore, you will hear this phrase constantly when discussing class schedules or membership plans.

Rate and Measurement

Used to define a quantity relative to the week, such as 'cinco litros de leite por semana' (five liters of milk per week).

Furthermore, the phrase is invariant. Unlike adjectives that might change based on gender or number, por semana stays exactly as it is, regardless of what it is describing. Whether you are talking about 'uma tarefa' (one task) or 'muitos compromissos' (many appointments), the phrase remains 'por semana'. This makes it a very 'safe' phrase for learners to use once they have mastered the basic pronunciation. It is also worth noting that in very formal or written contexts, you might see the word 'semanalmente' (weekly), but in 95% of spoken conversations, 'por semana' is the preferred choice due to its simplicity and rhythmic flow in the sentence.

Habitual Action

It emphasizes the recurring nature of an action, implying a habit or a fixed schedule that repeats indefinitely.

In summary, 'por semana' is the engine of routine description in Portuguese. It bridges the gap between the action and the time-unit, providing clarity on how often things happen. Whether you're discussing your salary, your fitness goals, or your study habits, this phrase will be your most reliable tool for expressing a seven-day frequency. It is versatile, easy to remember, and universally understood across all Portuguese-speaking regions from Lisbon to Luanda to Rio de Janeiro.

Using por semana correctly involves understanding its placement and the words that typically precede it. Most commonly, it follows a number or a frequency expression like 'uma vez' (once), 'duas vezes' (twice), or 'muitas vezes' (many times). The structure is almost always: [Action] + [Quantity/Frequency] + [por semana]. For instance, 'Eu estudo (action) dez horas (quantity) por semana'. This logical flow makes it quite intuitive for English speakers, as it mirrors the 'per week' structure. However, the omission of the article is the key difference; you don't say 'por a semana' in this distributive sense.

Standard Frequency

The most common pattern is [Number] + [Vezes] + [Por Semana]. Ex: 'Três vezes por semana'.

Another important usage occurs when describing a continuous state or a rate that doesn't involve a specific count of 'times'. This is common with money, weight, or distance. You might say, 'O carro gasta 50 litros de combustível por semana'. Here, 'por semana' acts as the denominator of the rate. In business Portuguese, you will frequently encounter it in the context of 'metas por semana' (goals per week) or 'relatórios por semana' (reports per week). It helps in breaking down large projects into manageable, weekly chunks.

Rate of Consumption

Expressing how much of a resource is used over seven days. Ex: 'Gastamos cem euros por semana em comida'.

When asking questions, 'por semana' is often the target of the inquiry. You would use the question word 'quanto' (how much) or 'quantas vezes' (how many times). For example, 'Quanto você ganha por semana?' or 'Quantas vezes por semana você viaja?'. This demonstrates how the phrase is integral to information exchange regarding schedules and logistics. In negative sentences, the structure remains the same: 'Eu não bebo café muitas vezes por semana'. The 'por semana' part stays at the end to provide the temporal context for the negation.

Interrogative Use

Asking about frequency or rates. Ex: 'Quantas horas por semana você dorme?'.

Finally, it is worth comparing 'por semana' with 'na semana'. While 'por semana' means 'every week' or 'per week' (frequency), 'na semana' (em + a) usually refers to 'in the week' of a specific event. For example, 'Na semana do Natal' (In the week of Christmas). If you want to say you do something every week, 'por semana' is your phrase. If you want to say something happened during one specific week, you use 'na semana'. Mastering this distinction is a hallmark of moving from an A2 level to a B1 level of proficiency.

The phrase por semana is ubiquitous in the Lusophone world. You will hear it in the most mundane settings and the most professional ones alike. In the streets of Lisbon, you might hear a neighbor telling another, 'Eu vou à feira uma vez por semana' (I go to the market once a week). In a corporate office in São Paulo, a manager might say, 'Precisamos de dois relatórios por semana' (We need two reports per week). It is a phrase that transcends social class and context because the concept of a seven-day cycle is the universal rhythm of modern life.

In the Workplace

Used to discuss deadlines, shifts, and productivity. 'Quantos turnos você faz por semana?' (How many shifts do you do per week?).

In the health and fitness world, 'por semana' is the gold standard for measuring progress. Doctors often ask patients, 'Quantas vezes por semana você pratica exercícios?' or 'Quantas vezes por semana você consome álcool?'. Nutritionists will plan diets based on 'porções por semana' (portions per week). If you are following a workout plan in a Brazilian gym, the trainer will likely give you a routine designed for 'quatro dias por semana' (four days per week). It is the primary unit of measurement for habit formation and health monitoring.

Health and Lifestyle

Essential for discussing diets, exercise, and medical frequency. 'Tome este remédio três vezes por semana'.

The phrase is also very common in the gig economy and service industry. In Brazil, for instance, a 'diarista' (a domestic worker paid by the day) might work 'duas vezes por semana' for a specific family. When discussing the cost of services, people often ask, 'Qual é o preço por semana?'. In the world of digital subscriptions, while 'por mês' is more common for billing, 'por semana' is often used in advertising to make a price look smaller and more attractive, such as 'Apenas 5 reais por semana!'.

Commerce and Services

Used in pricing and service scheduling. 'A assinatura custa dez reais por semana'.

Lastly, you will encounter this phrase in social media and blogs, especially those focused on productivity or 'life hacks'. You might see titles like 'Como ler um livro por semana' (How to read a book per week) or 'Dicas para economizar 100 reais por semana'. In these contexts, 'por semana' serves as a relatable and achievable timeframe for self-improvement. It suggests a rhythm that is frequent enough to see results but spacious enough to be sustainable. Whether in a podcast, a YouTube video, or a casual chat over coffee, 'por semana' is the heartbeat of how Portuguese speakers quantify their time.

One of the most frequent errors English speakers make when trying to say 'per week' or 'a week' is literal translation. In English, we often use the indefinite article 'a' as in 'twice a week'. Beginners in Portuguese often try to say duas vezes uma semana. This is a direct calque from English and sounds very unnatural to a native ear. In Portuguese, the distributive preposition por is mandatory. You must say 'duas vezes por semana'. Remembering this 'por' is the first hurdle in mastering frequency expressions.

The 'Indefinite Article' Error

Mistakenly using 'uma' instead of 'por'. Correct: 'Duas vezes por semana'. Incorrect: 'Duas vezes uma semana'.

Another common mistake is confusing por semana with na semana. As mentioned earlier, 'na' (em + a) refers to a specific week. If you say 'Eu vou ao médico na semana', a native speaker will wait for you to specify which week (e.g., 'na semana que vem' - next week). If you mean that you go to the doctor every week as a routine, you must use 'por semana'. This distinction between 'recurring frequency' and 'specific placement in time' is vital for clear communication.

Frequency vs. Specificity

Confusing 'por' (every) with 'na' (in the specific). Use 'por' for habits.

Pronunciation can also be a pitfall. The word por is short and often unstressed in rapid speech, but the 'r' must still be present. In Brazil, depending on the region, it might be a soft 'h' sound or a retroflex 'r'. In Portugal, it is a more guttural 'r'. However, the biggest mistake is merging 'por' and 'semana' into one word or skipping the 'r' entirely, which can make the phrase sound like 'pô semana', which is informal and sometimes confusing. Ensure you give each word its space.

The 'A' Preposition Confusion

In European Portuguese, you might occasionally hear 'à semana' in specific idioms, but 'por semana' remains the standard for frequency. Stick to 'por' to avoid confusion.

Finally, avoid using 'por' with plural 'semanas' when you mean 'per week'. You wouldn't say 'duas vezes por semanas'. The unit of time must remain singular because it represents the individual cycle in which the action occurs. Even if the action happens many times, it happens many times within a week. If you use the plural, you change the meaning to 'throughout the weeks' or 'for weeks', which is a different temporal concept altogether.

While por semana is the most common way to express weekly frequency, there are several alternatives depending on the level of formality or the specific nuance you wish to convey. The most direct synonym is the adverb semanalmente. Derived from the adjective 'semanal' plus the suffix '-mente' (equivalent to '-ly'), it is used in more formal writing, news reports, or professional documentation. For example, 'O pagamento é feito semanalmente' sounds slightly more official than 'O pagamento é feito por semana'.

por semana vs. semanalmente

por semana: Common, spoken, informal to neutral.
semanalmente: Formal, written, precise.

Another alternative is using a cada semana (each week) or toda semana (every week). While these are very similar, they carry a slightly different emphasis. 'Toda semana' emphasizes the repetition without fail, similar to 'every week'. 'A cada semana' focuses on the progression from one week to the next. For example, 'A situação melhora a cada semana' implies a cumulative improvement as the weeks pass. 'Por semana', on the other hand, is purely about the rate or frequency within any given week.

toda semana vs. por semana

toda semana: Focuses on the recurrence (Every week).
por semana: Focuses on the rate/frequency (Per week).

In some regional dialects or specific contexts, you might also see por sete dias (for seven days), though this is much less common as a frequency marker and more of a duration marker. There is also the phrase semana sim, semana não, which means 'every other week' or 'bi-weekly'. This is a very useful idiom to know if your routine doesn't happen every single week. Understanding these variations allows you to be more precise in your descriptions and to better understand native speakers who might vary their vocabulary based on context.

Other Time Units

The 'por + [unit]' pattern works for all timeframes:
- por dia (per day)
- por mês (per month)
- por ano (per year)

Finally, it's worth noting the adjective semanal. While 'por semana' is an adverbial phrase, 'semanal' is an adjective that describes a noun. For example, 'uma revista semanal' (a weekly magazine) or 'uma reunião semanal' (a weekly meeting). While you can say 'uma reunião por semana' (one meeting per week), 'reunião semanal' is more common when the 'weekly-ness' is an inherent quality of the meeting itself. Learning to switch between the adverbial phrase and the adjective will make your Portuguese sound much more sophisticated.