Introduction
Learning the subtle difference between Passou a and Começou a can help English-speaking students of Portuguese express changes in habit, routines, and the start of actions more naturally. This article explains when to use each phrase, shows clear examples in Brazilian Portuguese, and highlights common pitfalls and cultural notes.
- What each phrase means: an overview
- Grammar and structure
- When to use Começou a
- When to use Passou a
- Compare side-by-side examples
- Context and time markers
- When both are possible
- Negative forms and questions
- Common mistakes and how to avoid them
- Subtle cases: verbs of state vs. action verbs
- Cultural and usage notes
- Quick decision guide
- More examples for clarity
- Conclusion
What each phrase means: an overview
Começou a indicates the beginning of an action or activity. It focuses on the moment something starts. Use it when you want to say someone started doing something, often at a specific time or after a triggering event.
Passou a indicates a change of habit, state, or continuous behavior from one condition to another. It emphasizes that something became a new regular practice or a new state after a change.
Simple distinctions: start versus change
Think of começou a as telling listeners when an action began. Think of passou a as telling listeners that a new habit or state was adopted. Both can describe transitions, but they signal different perspectives: instant start versus adoption of a new pattern.
Grammar and structure
Começou a is the past form of começar followed by the preposition a and an infinitive verb. Typical structure: começar (conjugated) + a + infinitive.
Examples of structure:
Ela começou a estudar às seis.
Ele começou a trabalhar ontem.
Passou a is the past form of passar + a + infinitive or noun, and it often implies a permanent or semi-permanent change. Structure: passar (conjugated) + a + infinitive or noun.
Examples of structure:
Ele passou a estudar mais.
Ela passou a vegetariana.
Tenses and conjugation notes
You will commonly see both phrases in the past: passou a and começou a. They can also appear in other tenses, e.g. passou a / passará a / tem passado a; começou a / começará a / tem começado a. The important point is that the auxiliary verb carries tense and agreement while the verb after a stays in the infinitive.
Examples:
Nós começamos a viajar em julho.
Eles passaram a morar no Rio.
When to use Começou a
Use começou a when you want to emphasize the start of an action, often at a particular time or moment. It answers the question when did the action begin?
Typical contexts for Começou a
1) A specific moment or time marker: Ela começou a trabalhar às nove.
2) The beginning of an activity that might be short-term: Ele começou a chorar durante o filme.
3) The start of a process without implying permanence: A reunião começou a atrasar.
Examples in Brazilian Portuguese
Eu comecei a aprender violão no mês passado.
Nós começamos a tomar mais cuidado com a saúde.
O projeto começou a avançar depois da reunião.
A criança começou a falar cedo.
When to use Passou a
Use passou a to indicate a change that resulted in a new habit, state, or situation. It often implies continuity: once the change happened, the new behavior or condition continued.
Typical contexts for Passou a
1) Change of habit: Depois da gravidez, ela passou a dormir mais cedo.
2) Change of status or role: Ele passou a gerente da loja.
3) Continuous behavior or repeated action after the change: Desde então, passaram a economizar mais.
Examples in Brazilian Portuguese
Depois daquele incidente, ele passou a evitar restaurantes pequenos.
Ela passou a comer menos carne e se sente melhor.
O time passou a jogar com uma defesa mais forte.
Com a nova lei, a empresa passou a pagar mais impostos.
Compare side-by-side examples
Compare pairs to see the nuance:
Ele começou a correr ontem. (He started running yesterday — focus on the moment he began.)
Ele passou a correr todas as manhãs. (He adopted running as a habit — focus on the new routine.)
Ela começou a estudar medicina. (She began studying medicine — focus on the start.)
Ela passou a estudar medicina porque sempre quis ajudar pessoas. (She became a medical student or adopted medical studies as her path — focus on the change in life direction.)
Context and time markers
Time expressions often pair naturally with one phrase or the other. Words like ontem, no mês passado, and às oito typically collocate with começou a because they mark the start point. Phrases like desde então, a partir de então, and a partir daquele dia suit passou a because they emphasize a sustained change.
Examples with time markers
Ontem eu comecei a correr no parque.
A partir de janeiro, ela passou a estudar em outra cidade.
No ano passado eles começaram a reformar a casa.
Desde então, passaram a receber muitos visitantes.
When both are possible
Sometimes both phrases can be grammatically correct but change the nuance. Choosing one depends on whether you want to stress the moment of starting or the resulting habit.
Example where both work
Ele começou a trabalhar no turno da noite.
Ele passou a trabalhar no turno da noite.
First sentence: emphasizes when he started that schedule. Second sentence: emphasizes that he adopted that schedule as his new routine.
Negative forms and questions
Negation and questions follow the same patterns. Place não before the verb passar or começar for a negative sentence. For questions, invert normal word order or use intonation.
Examples:
Eu não comecei a estudar ainda.
Você começou a trabalhar no novo emprego?
Ela não passou a falar inglês fluentemente, só melhorou um pouco.
Quando ele passou a dirigir sozinho?
Common mistakes and how to avoid them
Mistake 1: Using começou a when you mean a lasting change. If you want to show a new habit or status, prefer passou a.
Incorrect: Ele começou a fumar. (if you mean he adopted a habit recently and now smokes regularly) — Better: Ele passou a fumar.
Mistake 2: Using passou a to mark a precise starting moment. If you need to emphasize the exact start, use começou a.
Incorrect: A aula passou a começar às oito. — Better: A aula começou às oito.
Subtle cases: verbs of state vs. action verbs
With verbs that describe states (ser, tornar-se, ficar), passou a is more natural because these verbs already imply a change of condition. With dynamic action verbs (correr, estudar, falar), both can be used depending on nuance.
Examples:
Ela passou a ser professora. (natural — change of profession)
Ela começou a ser professora. (possible but less idiomatic)
Ele começou a estudar música. (natural — start of activity)
Ele passou a estudar música. (natural if it became his habit or main focus)
Cultural and usage notes
Brazilian Portuguese speakers often prefer concise expressions to indicate habitual changes. Using passou a can sound more formal or descriptive in narratives, while começou a is common in everyday speech to mark beginnings. In storytelling, authors use passou a to show character development or transformation.
Regional differences are minor: both phrases are used throughout Brazil. However, tone and register matter. In formal writing or journalism, you might see passou a frequently to report changes in policy or long-term trends.
Quick decision guide
If you want to emphasize the exact start time or the moment an action began, choose começou a.
If you want to emphasize a new habit, lasting change, or a state that continued after the change, choose passou a.
More examples for clarity
Mariana começou a trabalhar na startup em março. (She started working there in March.)
Mariana passou a trabalhar na startup e agora não tem tempo livre. (She adopted that job as her new routine.)
O restaurante começou a oferecer pratos vegetarianos. (They began offering vegetarian dishes.)
O restaurante passou a oferecer um menu vegetariano completo. (They changed to a different kind of menu as a regular practice.)
Conclusion
Mastering the difference between Passou a and Começou a helps you speak Brazilian Portuguese with greater nuance. Use começou a for the start of actions and specific moments, and passou a to describe a change of habit, status, or ongoing behavior. Paying attention to time markers and context will guide your choice and make your Portuguese sound more natural.
