What is an objective complement?
The objective complement is a noun or pronoun or adjective that comes after a direct object and renames or describes the direct object. Certain verbs, such as called, named, considered, elected, and thought are frequently present in sentences that have an objective complement. (This is not an exhaustive list.) The use of an object complement prevents misunderstanding the writer’s intent. Look at this sentence: Jane called her dog. This sentence seems to indicate that Jane summoned her dog to come to her. The use of an objective complement lets us know what Jane called her dog. Jane called her dog Skippy. This sentence makes it clear that Jane is not summoning her dog, but naming her dog. Objective complements make clear the intent of the sentence by renaming or describing the direct object.