Agreementdifficulty 2
possessive-determiners
mi(s) / tu(s) / su(s) (my / your / his-her-their — agree only in number), nuestro/a/os/as and vuestro/a/os/as (our / your-pl — agree in gender AND number). Always precede the noun and replace any article (`mi libro`, never `el mi libro`). 3rd-person `su` is ambiguous (his / her / their / your-formal) — context disambiguates.
Examples
Mi casa.
→ My house.
mi agrees only in number; same form for masculine and feminine singular.
Nuestras hijas.
→ Our daughters.
nuestras — feminine plural agreement with hijas.
Su libro.
→ His/her/their/your book.
su is the most ambiguous possessive in Spanish — 4 possible referents.
Words in this rule
| Word | Part of speech |
|---|---|
| su | PR |
| tus | PR |
| nuestra | PR |
| mi | PR |
| mis | PR |
| nuestros | PR |
| tu | PR |
| vuestra | PR |
| vuestras | PR |
| vuestro | PR |
| vuestros | PR |
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