Take a look at the conjugation of deber (must) in El Presente:
| yo | debo |
| tú | debes |
| él / ella / Ud. |
debe |
| nosotros / nosotras |
debemos |
| vosotros / vosotras |
debéis |
| ellos / ellas / Uds. |
deben |
The endings are the same as regular -er verbs: Conjugate regular -er verbs in El Presente (present tense).
Look at and listen to these examples:Note that in the examples above, the modal verb deber is followed by an infinitive.
See also Using deber, poder, querer + infinitive to express must, can, to want to.
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