Unlike English, Spanish has two forms of possessive adjectives, a short form that is used before nouns, and a long-form possessive adjective that is used after nouns. Here are the short-form possessive adjectives (sometimes known as possessive determiners):
- mi, mis my Compra mis libros. (He is buying my books.)
- tu, tus your (singular familiar) Quiero comprar tu coche. (I want to buy your car.)
- su, sus your (singular or plural formal), its, his, her, their Voy a su oficina. (I am going to his/her/your/their office.)
- nuestro, nuestra, nuestros, nuestras our Es nuestra casa. (It is our house.)
- vuestro, vuestra, vuestros, vuestras your (plural familiar) ¿Dónde están vuestros hijos? (Where are your children?)
- Es nuestro coche. (It is our car.)
- Es nuestra casa. (It is our house.)
- Son nuestros coches. (They are our cars.)
- Son nuestras casas. (They are our houses.)
- Quiero comprar su casa. (I want to buy his/her/your/their house.)
- Quiero comprar la casa de él. (I want to buy his house.)
- Quiero comprar la casa de ella. (I want to buy her house.)
- Quiero comprar la casa de usted. (I want to buy your house.)
- Quiero comprar la casa de ellos. (I want to buy their house.)
Overuse of the possessive adjectives: The possessive adjectives are used in most cases in the same way as they are used in English. However, you should be aware that in many instances especially when speaking of body parts, clothing and items intimately associated with an individual Spanish uses the definite article (el, la, los or las), the equivalent of "the," instead of possessive adjectives.
- Sam arregla el pelo. (Sam is combing his hair.)
Ella juntó las manos para orar. (She joined her hands to pray.)
Ricardo rompió los anteojos. (Ricardo broke his glasses.)

