What do you call the pronoun that joins antecedent to subordinated clause of which it is?

The pronoun that joins an antecedent to a subordinate clause is called a relative pronoun.

Here's a breakdown:

* Antecedent: The noun or pronoun that the relative pronoun refers to.

* Subordinate Clause: A clause that depends on the main clause for its meaning.

* Relative Pronoun: A pronoun that introduces a relative clause and connects it to the antecedent.

Example:

* The book that I read was very interesting.

Here:

* "The book" is the antecedent.

* "that I read" is the subordinate clause.

* "that" is the relative pronoun, connecting the antecedent "book" to the clause "that I read."

Common relative pronouns include:

* who (for people)

* whom (for people, used as the object of a verb or preposition)

* whose (for possession)

* which (for things)

* that (for people or things)