“Começar a” vs “Começar de” in Portuguese: Correct Verb Patterns

Introduction

Many learners of Brazilian Portuguese get confused between the verbs patterns with começar a and começar de. Both look similar in English but behave differently in Portuguese. This article explains when to use each pattern, with clear rules, examples in Brazilian Portuguese, and notes about regional and colloquial usage to help you speak and write correctly.

Overview: começar as a transitive verb and prepositional patterns

The verb começar means to begin or to start. In Portuguese, começar can be followed by different prepositions or used without a preposition, and each combination gives a particular meaning. The most common patterns are começar a, começar de, and começar por. This article focuses on the contrast between começar a and começar de, explaining the grammar and showing examples in realistic sentences.

Basic distinction

Use começar a when the verb that follows indicates an action that begins. This is the equivalent of English to start doing something. The structure is começar a + infinitive. Use começar de when you want to indicate the point of origin, the first element in a sequence, or when you say where something starts physically or conceptually. The structure is começar de + noun or phrase indicating origin.

Rule 1: começar a + infinitive for starting an action

When you want to say that someone begins to do something, use começar a before an infinitive verb. This is the most common construction and is obligatory in many contexts.

Examples:

Eu comecei a estudar português este ano.
Ela começou a trabalhar na empresa em abril.
Nós começamos a aprender violão na escola.

Note that the infinitive stays in its neutral form: estudar, trabalhar, aprender. Conjugate começar as needed for tense and person: comecei, começou, começamos, começaram.

Negative and interrogative forms

In negatives and questions, the pattern remains the same.

Examples:

Ele não começou a escrever o relatório.
Você começou a entender a gramática?

Rule 2: começar de + noun or phrase for origin or starting point

Use começar de when you need to express the starting point of something that is not an action performed by the subject. This often indicates a physical starting location, a point in time, or the first item in a sequence.

Examples:

A corrida começou de manhã cedo.
A discussão começou de um comentário nas redes sociais.
O trem começa de São Paulo e vai até o Rio.

In these cases the phrase after começar de answers the question where or from what did it start: de manhã, de um comentário, de São Paulo.

Common safe rule of thumb

If the next word is a verb in the infinitive, use começar a. If the next word is a noun, place, time expression, or phrase indicating origin, use começar de. This simple test helps avoid common mistakes.

Special case: começar por and how it compares

It is useful to compare começar por because learners often confuse it with começar de. Use começar por to indicate the first action in a sequence, usually followed by an infinitive or a noun. It has a sense of starting with something among several steps.

Examples:

Vamos começar por revisar o capítulo um.
Ele começou por perguntar o nome dela.

Compare:

Ele começou a estudar matemática. (He began studying math.)
Ele começou por estudar matemática antes de seguir para física. (He started with math as the first step.)
Ele começou de um problema simples. (It started from a simple problem.)

When both might seem possible: subtle differences

Sometimes two patterns can look acceptable but convey different nuances.

Example 1

O projeto começou a crescer muito rápido. (The project began to grow rapidly; focus on the action of growing.)
O projeto começou de uma ideia simples. (The project started from a simple idea; focus on the origin.)

Example 2

Ele começou a trabalhar ontem. (He started working yesterday; action start.)
Ele começou de assistente e hoje é gerente. (He started as an assistant and today is manager; origin or initial role.)

In short, use começar a to emphasize the beginning of an activity and começar de to emphasize the starting point, origin, or initial condition.

Verbs that can accept prepositional alternation

Note that other verbs in Portuguese also use different prepositions to change meaning. With começar, the choice of a, de, or por is part of the verb phrase and changes the semantic focus. Pay attention to context and whether you talk about an action, an origin, or the first item in a series.

Practical examples in everyday Brazilian Portuguese

Below are everyday sentences showing natural usage. Notice how the meaning changes with each pattern.

Examples of começar a + infinitive:

Eu comecei a cozinhar pratos vegetarianos.
Eles começaram a planejar a viagem para o Nordeste.
Maria começou a estudar para o concurso.

Examples of começar de + noun/phrase:

A festa começou de uma forma tranquila, com música ao vivo.
O filme começa de uma cena na praia.
A tradição começou de uma celebração religiosa há muitos anos.

Examples of começar por to contrast:

Para organizar a festa, começamos por escolher a data.
Ele começou por aprender o básico antes de se aprofundar.

Common mistakes and how to avoid them

Many learners directly translate from English and use the wrong preposition or none at all. Here are frequent errors and corrections.

Error 1: Using no preposition before an infinitive

Wrong: Eu comecei estudar português.
Correct: Eu comecei a estudar português.

Error 2: Using de before an infinitive

Wrong: Ela começou de cantar.
Correct: Ela começou a cantar.

Error 3: Using a before a noun origin

Wrong: O evento começou a São Paulo.
Correct: O evento começou de São Paulo. (Or O evento começou em São Paulo if you mean it took place there.)

Note: For a physical location where something happens, Portuguese often uses em rather than de. For example, O evento começou em São Paulo if you mean the event took place there. Use começar de when you want to express origin or source rather than the location of occurrence.

Nuances with em, de, and por

Because prepositions overlap, learners should be careful. Here is a quick guide:

Use em when indicating location or time where an event takes place.

Example: O concerto começou em janeiro. (The concert began in January.)

Use de to indicate origin, source, or starting point within a sequence.

Example: A história começou de uma lenda antiga. (The story started from an old legend.)

Use por to indicate the first element or the way to begin a process among steps.

Example: Vamos começar por ler o contrato. (We will start by reading the contract.)

Regional and colloquial notes

In Brazilian Portuguese, spoken register can compress or alter structures. Informally, some speakers might drop the preposition or use variants, but the standard norm for writing and formal speech remains começar a for infinitive actions and começar de for origins.

Colloquial examples:

Comecei a estudar muito tarde. (Typical spoken sentence.)
Começou tudo de uma briga boba. (Spoken: It all started from a silly fight.)

Brazilian speakers also frequently use começar com in conversational contexts to mean starting with something, especially when listing items or actions. Example: Vamos começar com uma rodada de apresentações. This overlaps with começar por and is acceptable in spoken and written Brazilian Portuguese.

Putting it into practice: quick checklist

Before you speak or write, run through this mental checklist:

Is the next word an infinitive verb? If yes, use começar a.
Are you indicating a starting point, origin, or the first element of a series? If yes, use começar de.
Do you mean to start with one step among several? Consider começar por or começar com.
If you mean location or time where something occurs, try em with começar instead of de.

More examples with small translations

Eu comecei a ler aquele livro ontem. (I started to read that book yesterday.)
O movimento começou de uma reunião pequena. (The movement started from a small meeting.)
Eles começaram por explicar as regras antes do jogo. (They started by explaining the rules before the game.)
O curso começa em agosto. (The course starts in August.)

Conclusion

Mastering the difference between começar a and começar de is essential for clear Portuguese. Use começar a before infinitives to say someone begins an action, and use começar de to indicate origin or starting point. Remember começar por and começar com for first steps and starting with something. With attention to context and a little practice, choosing the correct pattern will become natural.