Two weeks ago, we started the series on word classes. And last week, we delved into report writing. I thought it would be useful to intersperse the series, so we go back to word classes this week. We ...

Demonstrative pronouns are used instead of a noun to avoid repeating it, eg ¿Que libro te gusta? (Which book do you like?) could be answered with the demonstrative pronoun éste (this one).