Agreementdifficulty 2
possessive-determiners
Sentencemi(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 | English |
|---|---|
| su | his |
| tus | your |
| nuestra | our |
| mi | my |
| mis | my |
| nuestros | our |
| tu | your |
| vuestra | your (plural, Spain) |
| vuestras | your (plural, Spain) |
| vuestro | your (plural, Spain) |
| vuestros | your (plural, Spain) |
Practice Spanish in context
Write AI sentences that force each case of possessive-determiners using your Easy vocab — or read articles where we underline the words that trigger each rule.