Spanish Grammar: The Subjunctive in Adjective Clauses

The Subjunctive in Adjective Clauses (Gramática 14.1)

An adjective clause is used to modify nouns or pronouns. In Spanish, the subjunctive mood is employed within these clauses to indicate that the existence of the person, place, thing, or idea being described is either uncertain, indefinite, or nonexistent.

Core Usage of the Subjunctive

The subjunctive is required in an adjective clause when it refers to a person, place, thing, or idea that corresponds to the following criteria:

  • The entity does not exist.

  • The existence of the entity is uncertain.

  • The entity is indefinite or unspecified by the speaker.

Example of Uncertainty:

  • Busco un profesor que enseñe japonés. (I'm looking for a professor who teaches Japanese.)

Example of Indefinite Inquiry:

  • ¿Conoces un buen restaurante que est cerca de mi casa? (Do you know a good restaurant that is near my house?)

Core Usage of the Indicative

The indicative mood is used when the adjective clause refers to a person, place, thing, or idea that is clearly known, certain, or definite.

Example of Known Entity:

  • Quiero ir al restaurante que est en frente de la biblioteca. (I want to go to the restaurant that's in front of the library.)

Example of Definite Entity:

  • Conozco a alguien que va a esa peluquera. (I know someone who goes to that hair salon.)

Comparative Examples: Indicative vs. Subjunctive

The choice between the indicative and subjunctive moods depends on whether the speaker is referring to a specific, known object or a hypothetical/unspecified one.

Indicative (Definite/Certain)

  • Necesito el libro que tiene informacin sobre Venezuela. (I need the book that has information about Venezuela.) - Refers to a specific book the speaker knows contains the info.

  • Quiero vivir en esta casa que tiene jardn. (I want to live in this house that has a garden.) - Refers to a specific, existing house.

  • En mi barrio, hay una heladera que vende helado de mango. (In my neighborhood, there's an ice cream shop that sells mango ice cream.) - Refers to a shop known to exist.

Subjunctive (Indefinite/Uncertain/Nonexistent)

  • Necesito un libro que tenga informacin sobre Venezuela. (I need a book that has information about Venezuela.) - The speaker is looking for any book that fits the description.

  • Quiero vivir en una casa que tenga jardn. (I want to live in a house that has a garden.) - The speaker is describing a desired, hypothetical house.

  • En mi barrio, no hay ninguna heladera que venda helado de mango. (In my neighborhood, there is no ice cream shop that sells mango ice cream.) - Refers to something that does not exist in that location.

Verbs Commonly Followed by Adjective Clauses in the Subjunctive

Certain verbs frequently introduce the need for a subjunctive adjective clause because they often deal with searching, needing, or questioning existence:

  • buscar (to look for)

  • conocer (to know/be acquainted with)

  • encontrar (to find)

  • haber (there is/there are)

  • necesitar (to need)

  • querer (to want)

Rules for the Personal "a"

The use of the personal "a" changes depending on whether the direct object is a specific person or a hypothetical one.

Hypothetical People

The personal "a" is typically not used with direct objects that represent hypothetical or unspecified people.

  • Necesitamos un empleado que sepa usar computadoras. (We need an employee who knows how to use computers.)

Specific People

The personal "a" is used when the direct object refers to a specific, known person.

  • Necesitamos al empleado que sabe usar computadoras. (We need the employee who knows how to use computers.)

Exceptions: Alguien and Nadie

The words alguien (someone) and nadie (no one) are special cases. They are always preceded by the personal "a" when they function as direct objects, regardless of their certainty.

  • Busco a alguien que pueda cocinar hoy. (I'm looking for someone who can cook today.)

  • No conozco a nadie que pueda cocinar hoy. (I don't know anyone who can cook today.)

  • Slo necesitamos a alguien que nos deje pasar! (We only need someone who lets us pass!)

Usage in Questions and Responses

The subjunctive is commonly used in questions when the speaker is uncertain about the existence of the entity they are asking about. However, if the person responding provides specific information confirming the existence, the indicative is used in the answer.

Question (Subjunctive for uncertainty):

  • Hay un parque que est cerca de nuestro hotel? (Is there a park that's close to our hotel?)

Response (Indicative for certainty):

  • S, hay un parque que est muy cerca del hotel. (Yes, there's a park that's very close to the hotel.)

Additional Example of Uncertain Inquiry:

  • Hay algn cajero automtico que est cerca? (Is there any ATM that is nearby?)