Spanish Sentence Complements and Pronoun Functions Explained

Direct Object (Complemento Directo)

Syntactically, this can be a noun or a prepositional phrase. It is usually placed after the verb. To identify it, it can be replaced by the personal pronouns lo, la, los, las. It can be converted from active to passive voice, where the direct object becomes the subject.

Indirect Object (Complemento Indirecto)

Syntactically, this is a prepositional phrase with a noun phrase where the pronoun is the nucleus. To identify it, it can be replaced by le or les.

Agent Complement (Complemento Agente)

Syntactically, this is a prepositional phrase introduced by por. To recognize it, the sentence can be transformed from passive to active, where the agent then becomes the subject.

Attribute (Atributo)

Syntactically, this can be any kind of phrase. Its function is twofold because it complements both the subject and the verb. To identify it, it can be replaced by the pronoun lo.

Predicative Complement (Complemento Predicativo)

Syntactically, this can be an adjectival phrase or a prepositional phrase with de. If deleted, the sentence loses its original meaning.

Regime Complement (Complemento de Régimen)

Syntactically, this is a prepositional phrase. To identify it, it can be replaced by a tonic personal pronoun.

Adverbial Complement (Complemento Circunstancial)

Syntactically, this can be an adverbial phrase, a noun phrase, or a prepositional phrase. There are different types and modes, and several can appear in a single sentence.

Functions of the Pronoun 'Se'

• Substitute for 'le/les': A personal pronoun that serves as the indirect object when replaced by lo, la, los, las.
• Reflexive: Serves as the direct or indirect object in reflexive sentences.
• Reciprocal: In reciprocal sentences, the pronoun serves as the direct or indirect object.
• Component of Pronominal Verbs: The pronoun is an integral part of the verb.
• Dative of Interest: Plays the role of the indirect object, reinforcing the individual's subjective participation in the action.
• Impersonal: Defined as a mark of impersonal sentences, appearing in the third-person singular.
• Passive 'Se': Acts as the mark of passive voice; these sentences have an active verb and a patient subject.