Brazilian Portuguese Grammar

Formation of the personal infinitive

Do you know how to conjugate verbs in the personal infinitive?

You can derive the personal infinitive from the impersonal infinitive (cantar, beber, compor, partir) by adding inflectional endings:

Infinitivo pessoal
Use	Example	English	English equivalent
The subordinating clause and the main clause have different subjects.	Ele negou estarmos errados.	He denied that we are wrong.	Common in reported speech
	Elas admitiram estarem as contas erradas.	They admitted that the accounts are wrong.	Common in reported speech
Portuguese structure: adjective + personal infinitive	É necessário virem agora. É importante não sermos desonestos.	It's necessary that they come now. It's important that we not be dishonest. It's necessary for them to come now. It's important for us not to be dishonest.	English structures: adjective + that + subject + (not) + verb in the infinitive without to or adjective + for + person + (not) to + verb