Definite articles as pronouns (el de, la que)

Replacing nouns with de

When comparing things or showing possession, repeating the same noun over and over sounds unnatural. You can avoid this by replacing the noun with a definite article (el, la, los, las) followed by de.

Think of this as the Spanish equivalent of saying "that of" or using an apostrophe-s ('s) in English. The article must always match the gender and number of the omitted noun.

My brother-in-law's car is as fast as my sister-in-law's.
El carro de mi cuñado es tan rápido como el de mi cuñada.
My nephew's documents and my daughter-in-law's are on the table.
Los documentos de mi sobrino y los de mi nuera están en la mesa.
Your godmother's house is more beautiful than your goddaughter's.
La casa de tu madrina es más bonita que la de tu ahijada.

Saying "the one(s) who" with que

You can also combine a definite article with que to mean "the one who", "the one that", or "the ones who". This is incredibly useful for pointing out exactly which person you are talking about in a crowded room or extended family.

The godfather is the one who will write the letter for his godson.
El padrino es el que escribirá la carta para su ahijado.
Our daughter-in-law is the one who will help our niece.
Nuestra nuera es la que ayudará a nuestra sobrina.
My sister-in-law and my niece are the ones who will prepare the party.
Mi cuñada y mi sobrina son las que prepararán la fiesta.