Focused learning guide
The Portuguese personal infinitive explained
Understand when an infinitive can show its own subject and why forms such as fazermos and chegarem are useful.
Portuguese can inflect an infinitive for its understood subject, especially when that subject needs to be clear or differs from the main clause participant.
Why the form exists
Compare a general infinitive with one whose agent is explicit. Phrases after prepositions often use the personal infinitive to clarify who performs the action.
Forms and overlap
Many endings resemble future-subjunctive forms, while first- and third-person singular may look like the uninflected infinitive. Meaning and syntax identify the construction.
Learn through useful frames
Practise antes de sairmos, para eles perceberem and é importante fazermos. Retrieve the subject and purpose rather than reciting endings alone.
Questions learners ask
Frequently asked questions
Does English have a personal infinitive?
No equivalent inflectional system exists, though English can express an infinitive subject in other ways.
Must every infinitive be inflected?
No. Choice depends on syntax, subject reference, clarity and style.
Is it used in everyday speech?
Yes, especially in frequent prepositional constructions.