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How children learn Spanish
10–14 months First Words
Children produce their first recognizable words, typically high-frequency caregiver terms and basic needs vocabulary. Babbling narrows to Spanish phonotactics, favoring open CV syllables.
Ce qu'ils disent
mamá
mama
mommy
généralement enseigné : early
aba
water
water
Phonologically simplified form of "agua"; common reduction at this stage
más
more
more
One of the earliest functional words; used as a general request
Erreurs révélatrices
tete → chupete
pacifier
The child has identified the stressed syllable of the target word and reproduces it with reduplication — a phonological simplification strategy showing sensitivity to prosodic structure.
14–20 months Two-Word Stage
Children begin combining words into proto-sentences, typically pairing a content word with a relational term. Bare nouns without determiners are common, and verbs appear in rote-learned forms (often 3rd person singular).
Ce qu'ils disent
mamá agua
mama water
Mommy, water (= I want water)
Agent + object combination without verb; typical two-word stage
no quiero
not want.1SG.PRS
I don't want (it)
Early negation; "no" + rote-learned verb form. Among the first inflected verbs produced.
généralement enseigné : early
más leche
more milk
more milk
Erreurs révélatrices
papá coche → El coche de papá / Papá tiene un coche
Daddy's car / Daddy has a car
The child is combining semantically related words to convey possession, showing understanding of possessive relations before acquiring the syntactic means (prepositions, articles) to express them.
20–30 months Grammar Explosion
Rapid morphological development: articles and gender agreement emerge (around 20–26 months), verb person/number marking becomes productive, and the first past tense forms (preterite) appear. Children begin producing 3–4 word sentences with rudimentary phrase structure.
Ce qu'ils disent
yo quiero la pelota
1SG want.1SG.PRS DEF.F ball.F
I want the ball
Overt subject pronoun + correctly gendered article. Subject pronouns are optional in Spanish (pro-drop), but children freely use both null and overt subjects.
généralement enseigné : early
généralement enseigné : early
généralement enseigné : early
se cayó
REFL fall.3SG.PST
He/she/they/it fell down
Among the first past tense (preterite) forms; often appears with achievement verbs
généralement enseigné : mid
el perro está comiendo
DEF.M dog.M be.3SG.PRS eat.GER
The dog is eating
Progressive periphrasis (estar + gerund) productive by this stage
généralement enseigné : early
généralement enseigné : early
généralement enseigné : early
généralement enseigné : early
Erreurs révélatrices
la agua → el agua
DEF.F water
the water
The child has internalized the rule that feminine nouns take the feminine article "la." The exception — feminine nouns beginning with stressed /a/ take the masculine-form article "el" — has not yet been learned, revealing productive gender agreement.
yo sabo → yo sé
1SG know.1SG.PRS.REG
I know
The child has extracted the regular 1st person singular pattern (-o ending) and applies it to the irregular verb "saber." This overregularization shows productive morphological analysis: the child treats "sab-" as the stem and adds the regular suffix.
2.5–3.5 years Complex Sentences
Children produce multi-clause sentences using coordination ("y," "pero") and early subordination ("porque," "que"). The preterite/imperfect distinction begins to differentiate, and ser/estar selection with adjectives becomes increasingly adult-like. Gender agreement is reliably produced.
Ce qu'ils disent
no quiero porque está feo
not want.1SG.PRS because be.3SG.PRS ugly.M
I don't want (it) because it's ugly
Causal subordination with "porque" — among the first connectives to emerge productively
généralement enseigné : mid
généralement enseigné : early
ayer fuimos al parque y jugamos
yesterday go.1PL.PST to.DEF.M park and play.1PL.PST
Yesterday we went to the park and we played
Coordinated past tense narrative with correct 1PL preterite agreement
généralement enseigné : mid
généralement enseigné : early
mamá dijo que no
mama say.3SG.PST that not
Mommy said no
Complement clause with "que" — earliest subordination type to emerge
généralement enseigné : mid
généralement enseigné : mid
Erreurs révélatrices
yo lo ponió aquí → yo lo puse aquí
1SG it put.3SG.PST.REG here
I put it here
The child has extracted the regular preterite pattern for -er verbs (stem + -ió for 3SG) and applies it to the stem "pon-" of the highly irregular verb "poner." This overregularization shows mastery of the regular conjugation paradigm while the irregular stem change (pon- → pus-) has not yet been stored.
la mano es rojo → la mano es roja
DEF.F hand.F be.3SG.PRS red.M
The hand is red
The child has learned that "mano" ends in -o, and since most -o nouns are masculine, they produce the masculine adjective form. This reveals an overgeneralization of the phonological gender assignment rule; "mano" is one of the few feminine nouns ending in -o.
3.5–5 years Refinement
Children refine the preterite/imperfect distinction, extending the imperfect to habitual and background contexts. Conditional clauses with "si" expand rapidly. The subjunctive begins appearing in formulaic expressions (quiero que, ojalá) though productive mood selection develops slowly through age 7.
Ce qu'ils disent
cuando era pequeño no sabía leer
when be.1SG.IMPF small.M not know.1SG.IMPF read.INF
When I was little I didn't know how to read
Imperfect used for background state and habitual ability — a late-developing function
généralement enseigné : mid
quiero que me compres un helado
want.1SG.PRS that me buy.2SG.SBJV INDEF ice.cream
I want you to buy me an ice cream
Volitional subjunctive — among the first productive subjunctive uses, appearing in "quiero que" frames
généralement enseigné : mid
généralement enseigné : mid
si llueve no vamos al parque
if rain.3SG.PRS not go.1PL.PRS to.DEF.M park
If it rains we won't go to the park
Conditional clause with "si" — this connective shows the greatest expansion between ages 3 and 5
généralement enseigné : mid
Erreurs révélatrices
ha rompido el vaso → ha roto el vaso
have.3SG.PRS break.PTCP.REG DEF.M glass.M
He/she/they/it has broken the glass
The child applies the regular past participle pattern (-ido for -er verbs) to the irregular "romper" (→ roto). This overregularization of past participles peaks around ages 4–5 and is more common with low-frequency irregular participles.
si tendría dinero compraría un juguete → si tuviera dinero compraría un juguete
if have.1SG.COND money buy.1SG.COND INDEF toy
If I had money I would buy a toy
The child correctly uses the conditional in the main clause but places the conditional in the "si" clause too, where adult Spanish requires the imperfect subjunctive. This reveals awareness of the hypothetical meaning of conditional morphology but not yet the distributional constraint on mood after "si."
5+ years Near-Adult Grammar
Children consolidate the subjunctive across clause types (doubt, purpose, relative clauses with indefinite antecedents), master the preterite/imperfect contrast with all aspectual verb classes, and begin using advanced narrative structures. Overregularization errors virtually disappear by age 6–7.
Ce qu'ils disent
no creo que sea verdad
not believe.1SG.PRS that be.3SG.SBJV truth
I don't think that's true
Subjunctive in doubt context — requires understanding that negated belief triggers subjunctive mood
généralement enseigné : mid
généralement enseigné : mid
estábamos jugando cuando llegó papá y nos asustamos
be.1PL.IMPF play.GER when arrive.3SG.PST papa and REFL scare.1PL.PST
We were playing when Dad arrived and we got scared
Adult-like narrative with imperfect for background, preterite for foregrounded events, and coordination
généralement enseigné : mid
généralement enseigné : mid
Erreurs révélatrices
busco un perro que es grande → busco un perro que sea grande
look.for.1SG.PRS INDEF dog.M that be.3SG.PRS big.M
I'm looking for a dog that is big (nonspecific)
The child uses indicative in a relative clause describing an indefinite/hypothetical referent, where adult Spanish requires subjunctive. Subjunctive selection in relative clauses is among the last mood distinctions to be fully acquired (around age 6–7), showing the child understands relative clauses but not yet the semantic nuance of specificity that triggers mood alternation.
Sources for Spanish
The grammatical descriptions on this page are informed by the following published reference and descriptive grammars. Grammatical facts themselves are not subject to copyright; the scholars who documented them deserve attribution.
- Butt, John & Benjamin, Carmen (2004). A New Reference Grammar of Modern Spanish, 4th ed. London: Arnold.
- Whitley, M. Stanley & González, Luis (2007). Gramática para la composición, 2nd ed. Washington, D.C.: Georgetown University Press.
- Real Academia Española & Asociación de Academias de la Lengua Española (2010). Nueva gramática de la lengua española. Madrid: Espasa.
- Penny, Ralph (2002). A History of the Spanish Language, 2nd ed. Cambridge University Press.