Grammar Rules: Subject Complement

There are two kinds of subject complements.

A predicate nominative is a noun or pronoun which follows a linking verb and refers to the subject.

Example: Carla is the leader. [The noun leader follows the linking verb is and refers to the subject Carla].

A predicate adjective is an adjective which follows a linking verb and describes the subject of the verb.

Example: The buildings are very tall. [The adjective tall follows the linking verb are and describes the subject trees].