Matching Pairs Relative ClausesOnline version Learn about relative clauses in a fun way by Manuela Alvarez Cortes 1 Who 2 Which 3 That 4 Whose 5 Whom Subject or object pronoun for people, animals and things in defining relative clauses (who or which are also possible) Subject or object pronoun for animals and things Subject or object pronoun for people Possession for people animals and things Object pronoun for people, especially in non-defining relative clauses (in defining relative clauses we colloquially prefer who)