| Before the noun | mi / tu / su / nuestro / su | Mi casa es pequeña. | My house is small. |
| Before the noun | vosotros: vuestro | ¿Es vuestra casa? | Is it your house? |
| Agreement | the number of the thing owned; nuestro also its gender | Nuestros hijos viven en Quito. | Our children live in Quito. |
| Owner as a noun | de + owner | la casa de Ana | Ana's house |
| A2After ser | mío / tuyo / suyo / nuestro / suyo | Esta mochila es mía. | This backpack is mine. |
| A2Alone | the article and the long form | Mi casa es grande, y la tuya es bonita. | My house is big, and yours is pretty. |
| B1After the noun | one of several | Marta es una amiga mía. | Marta is a friend of mine. |
| B1A clear owner | de él, de ella, de usted instead of su | Llevé la maleta de ella. | I carried her suitcase. |
| Trap | su is his, her, its, their, and your for usted | Ana vive con su hermano. | Ana lives with her brother. |
| Trap | mis before a plural noun | Mis padres son de Cuba. | My parents are from Cuba. |