The most common way to express possession in Spanish is with what are referred to as the unstressed possessive adjectives:

SINGULAR
 

PLURAL
 

The possessive adjective precedes the noun to which it refers. The ending of the adjective reflects the number of the thing possessed: mi casa, mis libros, nuestra casa, nuestros libros, su casa, sus libros, etc.

Nuestro and vuestro reflect gender (masculine or feminine) as well as number: nuestras amigas, vuestros amigos, etc.

Since su and sus can have multiple meanings (‘your,’ formal, singular and plural; ‘his’; ‘her’; ‘its’;‘their,’ masculine or feminine), another structure is sometimes used instead for clarification: definite article + noun + de + possessor.

su libro = el libro de...
 

Examples of Possession

• Buenos días. Mi familia y yo queremos ir de vacaciones a Acapulco con un tour.