Indirect objects are words, phrases, and clauses that indicate to or for whom or what the action of a ditransitive verb is performed. The term "indirect object" describes a grammatical function, which is what a word, phrase, or clause does. In many languages, nouns, noun phrases, and pronouns primarily function as indirect objects; however, other grammatical forms including noun clauses, verb phrases, and prepositional phrases perform the grammatical function of indirect object. Sentences that contain an indirect object usually must also contain a direct object. This grammar guide can answer even the most complex questions about indirect objects through articles, lesson plans, and more.