what is it?
Spanish has no single verb equivalent to English "to become." Instead, it distributes the meaning across six reflexive constructions — ponerse, quedarse, hacerse, volverse, convertirse en, and llegar a ser — each encoding a different type of change: how sudden or gradual it is, whether it is voluntary or involuntary, whether it is temporary or permanent, and whether the result is described by an adjective or a noun.
when to use it
ponerse + adjective — a sudden, brief, or reversible change of mood, emotion, or physical appearance. The new state is not meant to last. Use it with adjectives like triste, nervioso, rojo, enfermo.
quedarse + adjective — a state that is left behind by an event, often one that is unwanted or surprising. The subject ends up in a new condition as a result of something that happened. Common with solo, ciego, sordo, sin trabajo, callado.
hacerse + noun or adjective — a lasting change that is the result of the subject's own effort, decision, or deliberate process. Typical with professions, ideologies, and religions: hacerse médico, hacerse rico, hacerse budista.
volverse + adjective — a lasting change in character or personality that is involuntary or beyond the subject's control. The change is often negative or at least unintended: volverse agresivo, volverse desconfiado, volverse loco.
convertirse en + noun phrase — a complete transformation into something fundamentally different. Always followed by a noun (never a bare adjective). Works for both concrete and abstract transformations: convertirse en un problema, convertirse en líder.
llegar a ser + noun or adjective — a hard-won outcome reached at the end of a long, slow process. It emphasises the distance travelled and the effort involved: llegar a ser director, llegar a ser famoso.
formation
All six constructions are built on the same reflexive pattern: a conjugated verb preceded by the appropriate reflexive pronoun (me, te, se, nos, os, se). The pronoun agrees with the subject. Below is the pattern shown in the present tense for ponerse; the same pronoun set applies to all six verbs.
| person | reflexive pronoun | verb form | example |
|---|---|---|---|
| yo | me | pongo | me pongo nervioso |
| tú | te | pones | te pones nervioso |
| él / ella / usted | se | pone | se pone nervioso |
| nosotros | nos | ponemos | nos ponemos nerviosos |
| vosotros | os | ponéis | os ponéis nerviosos |
| ellos / ustedes | se | ponen | se ponen nerviosos |
The complement that follows the verb changes according to the construction:
| verb | complement type | example |
|---|---|---|
| ponerse | adjective | se puso triste |
| quedarse | adjective | se quedó solo |
| hacerse | noun or adjective | se hizo abogado |
| volverse | adjective | se volvió desconfiado |
| convertirse en | noun phrase (with en) | se convirtió en mariposa |
| llegar a ser | noun or adjective (with a ser) | llegó a ser director general |
Note that convertirse en and llegar a ser are two-word constructions. The prepositions en and a are fixed parts of each expression and cannot be omitted.
examples in context
common pitfalls
ponerse for a lasting change of belief or character. Because ponerse is restricted to brief, reversible states, it cannot describe a permanent ideological or character shift. *Se puso ateo implies a temporary mood, which makes no sense. Use hacerse for a deliberate, lasting conversion: Se hizo ateo.
hacerse for an involuntary or unwanted change. hacerse implies agency and intention. When the change happens to the subject against their will or without their control, use volverse. Compare: *Se hizo loco (wrong — nobody chooses to go mad) vs. Se volvió loco (correct).
convertirse en with an adjective. The preposition en requires a noun phrase. Adjectives cannot follow it directly. *Se convirtió en triste is ungrammatical. For an adjectival result, choose the appropriate verb: Se puso triste (brief state) or se volvió triste (lasting change).
A useful quick check: if the complement is an adjective, your options are ponerse, quedarse, hacerse, or volverse. If it is a noun, your options are hacerse, convertirse en, or llegar a ser. convertirse en never takes a bare adjective.
Three sentences, graded here. Nothing is saved and no account is needed.
Después de correr bajo la lluvia durante una hora, Marcos ___ muy pálido y empezó a temblar.
Fill in the blank with the correct verb form.