56 Deber vs Deber de Flashcards
In Spanish, when we want to express an obligation or a responsibility, we use the verb deber, properly conjugated of course,
The everyday verb deber is most often used to express that someone has a debt or is obligated to do something.
followed by the infinitive of the verb denoting the action that we must carry out.
I must do my homework.
Debo hacer mi tarea.
In the preterite, deber is used to indicate that something SHOULD have been done.
“You should have warned me.”
Or
“You should have told me in advance.”
In the preterite, deber is used to indicate that something should have been done.Debiste haberme avisado.
Debiste……………. haber….me …….. avisado.
You should have me warned
“Deber + infinitive” tends to imply a sense of internal obligation,
whereas “tener que + infinitive,” which is extremely common and very close in meaning, tends to convey a sense of external obligation.
Emilio should pick up his dirty clothes. (For his own good and that of the household.)
Emilio debe levantar su ropa sucia.
Emilio must/has to pick up his dirty clothes. (Or his mother will ground him.)
Emilio tiene que levantar su ropa sucia.
So any time you want to express a sense of responsibility or obligation, especially one that stems of an internal sense of duty, just conjugate the verb deber and then add the infinitive of the action verb.
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I know it won’t be easy but I must confess the truth.
Sé que no será fácil pero debo confesarle la verdad.
When one wants to give the listener or reader the idea of probability, one also uses the verb deber, but before the infinitive,
one should also include the preposition de.
The phrase deber de can be used to indicate that something is highly probable.
You must be [probably are] confused.
Confundida debes de estar.
Aleks Syntek probably understood the difference. (That is the most likely scenario.)
Aleks Syntek debió de entender la diferencia.
(Use of Preterite for SHOULD)
she should have stayed with him
debió quedarse con él
Expressing Obligation
When used in this way, deber is frequently similar in meaning to the English
“must,” “should,” or “ought”:
You ought to study your lessons.
Debes estudiar tus lecciones.
Which car should I buy?
¿Qué carro debo comprar?