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Conjugation Chart of “Deber” (to have to, must) in the Subjunctive Mood

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Understanding the Subjunctive Mood of “Deber”

The Subjunctive Mood of Deber is used to express doubt, desire, or uncertainty about an action or event, for example: Dudo que debas ir a la fiesta. (I doubt that you should go to the party.)

Deber is a regular -er verb, so its conjugations in the Present Subjunctive follow the regular pattern for this verb type.

How to Use Deber in the Subjunctive Mood

The present subjunctive of deber is used to express obligation, duty, advice, or probability in the present tense.

Obligation or duty: For example, Debo estudiar para el examen. (I must study for the exam.)

Advice: For example, Debes comer más frutas y verduras. (You should eat more fruits and vegetables.)

Probability: For example, Deben estar en camino. (They must be on their way.)

Slang/Idiomatic: For example, ¡Debes estar bromeando! (You must be joking!/You can’t be serious!)

Real Life Examples of Deber in the Subjunctive Mood

Antes de salir de viaje, deba hacer una lista de lo que necesito empacar. (Before going on a trip, I should make a list of what I need to pack.)

Para tener una vida sana, debamos comer frutas y verduras todos los días. (To live a healthy life, we should eat fruits and vegetables every day.)

Aunque no quieras, debas respetar las reglas de la sociedad. (Even if you don’t want to, you should respect society’s rules.)

Es importante que deban llegar a tiempo a la reunión. (It’s important that they should arrive on time for the meeting.)

Según las noticias, deba evitar viajar a esa zona por ahora. (According to the news, one should avoid traveling to that area for now.)

Para progresar en tu carrera, debas seguir aprendiendo y capacitándote. (To progress in your career, you should keep learning and training.)

Aunque cueste, debamos ahorrar para el futuro de nuestros hijos. (Even though it’s difficult, we should save for our children’s future.)

Oye, deban ir con cuidado por esa zona peligrosa. (Hey, they should be careful in that dangerous area.)

Para una buena relación, deba haber comunicación y respeto mutuo. (For a good relationship, there should be communication and mutual respect.)

Aunque no te guste, debas hacer tus tareas antes de salir a jugar. (Even if you don’t like it, you should do your homework before going out to play.)

Según los expertos, debamos reciclar más para cuidar el medio ambiente. (According to experts, we should recycle more to take care of the environment.)

Oye, deban pedir permiso antes de tomar algo que no es suyo. (Hey, they should ask for permission before taking something that isn’t theirs.)

Para tener éxito en los negocios, deba ser persistente y trabajar duro. (To be successful in business, one should be persistent and work hard.)

Aunque sea difícil, debamos ser honestos y decir la verdad. (Even though it’s difficult, we should be honest and tell the truth.)

Según las reglas, deban usar casco cuando montan en bicicleta. (According to the rules, they should wear a helmet when riding a bicycle.)

Conjugation Chart with English Translations

Conjugations of Deber (to have to, must) in the Subjunctive Mood (Latin American Spanish) with English Translations:

This post covers Latin American Spanish. For Castilian Spanish, click here

Synonyms

The Subjunctive mood is also known as the Simple Subjunctive, Subjunctive Present, or Present Subjunctive Mood in English, and as Presente de Subjuntivo, Subjuntivo Presente, Presente del Modo Subjuntivo, or Tiempo Presente del Subjuntivo in Spanish.