Chapter 17: Subordinated Clauses
The relative pronoun links two clauses in a sentence. Consider for example the following two sentences, which we can join these sentences by using a relative pronoun:
The relative pronoun links the two clauses in two ways:
The word in the first clause that the relative pronoun modifies ("the man") is called the antecedent of the rel p. The relative pronoun must agree in gender and number with its antecedent.
The case of the relative pronoun is determined by the function it serves in the second clause ("who came"). In this sentence, the rel p. serves as the subject of the second clause so it must be in the nominative case.