Relative pronoun

A relative pronoun marks a relative clause; it has the same referent in the main clause of a sentence that the relative modifies. A relative pronoun marks a relative clause; it has the same referent in the main clause of a sentence that the relative modifies. An example is the word that in the sentence 'This is the house that Jack built.' Here the relative pronoun that marked the relative clause 'that Jack built,' which modifies the noun house in the main sentence. That has an anaphoric relationship to its antecedent 'house' in the main clause.