This is an irregular verb.
Display tenses in:
Display tenses in:
PresentPresentePresente
Ele age como se nada tivesse acontecido.
He acts as if nothing had happened.
PreteritePretérito perfeitoPretérito perfeito
A polícia agiu rapidamente.
The police acted quickly.
ConditionalFuturo do pretéritoCondicional
(Eu) agiria de outra forma.
I would act differently.