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"Tener que" is a transitive verb phrase which is often translated as "to have to", and "deber que" is a phrase which is often translated as "duty that". Learn more about the difference between "tener que" and "deber que" below.
tener que(
teh
-
nehr
 
keh
)
A transitive verb phrase is a phrase that combines a verb with a preposition or other particle and requires a direct object (e.g., take out the trash.).
transitive verb phrase
a. to have to
Tengo que sacar la basura, apesta.I have to take the trash out; it stinks.
Los participantes tienen que llenar el formulario de salud.The participants have to fill out the health form.
b. to have got to
Tienes que decírselo. Solo complicará las cosas si no lo haces.You've got to tell her. It will only complicate things if you don't.
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deber que(
deh
-
behr
 
keh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. duty that
Nunca debemos olvidar el deber que tenemos los unos con los otros como seres humanos.We must never forget the duty that we have to each other as human beings
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