Necesitamos comprar We need to buy petrol.
gasolina.
¿Lograste hacerlo? Did you manage to do it?
Verbs with different subjects
A small number of verbs can take a direct infinitive when the subjects of
the finite verb and the infinitive are not the same.
The main verbs that allow this construction are hacer‘to make’, mandar/
ordenar‘to order’,dejar‘to allow’, permitir‘to permit’, impedir‘to prevent’,
persuadir‘to persuade’, prohibir‘to forbid’, as well as perception verbs such
as oír‘to hear’, escuchar‘to listen’, mirar‘to watch’, sentir‘to feel’:
Nos hicieron traducir un They made us translate a
texto medieval. medieval text.
No permiten fumar a los They don’t allow the passengers
pasajeros. to smoke.
Le prohibieron poner la tele. They forbade him to put on the TV.
Lola mandó callar a su Lola told her brother to be
hermano. quiet.
Te oí entrar anoche. I heard you come in last night.
Note: For alternative constructions based on the subjunctive, see 12.1.1.
The infinitive verb has a passive or impersonal sense after the above verbs
if no subject is specified for it:
Hice llamar a la policía. I had the police called.
Oí cantar una rumba. I heard someone singing a
rumba.
Mandó llenar los bidones. He ordered the drums/cans to
be filled.
Prepositions + infinitive
Preposition required by preceding verb
Often the choice of preposition depends on the preceding verb:
soñar conhacer to dream about doing
dejar dehacer to stop doing
17.2.1
17.2
17.1.2
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Prepositions
+ infinitive