Portuguese · Chapter 11 · Lesson 12 · Grammar primer
Personal infinitive
Prescribed by the Edexcel specification.
The short version
The personal infinitive has no irregular verbs
Portuguese lets an infinitive take person endings: -mos for nós, -em for vocês and eles, nothing for the rest. Because it is built on the infinitive itself, every verb is regular, even ser and ir: sermos, irmos, serem, irem.
Antes de sairmos, vamos comer.
It is para eu fazer, not para mim fazer
When a pronoun is the one doing the infinitive's action, it is a subject, so it takes the subject form eu. Para mim fazer is everywhere in casual Brazilian speech, but it is widely corrected. With no verb after it, mim is right: é para mim.
Isso é para eu fazer.
That's the gist. The full article goes deeper - more examples, the edge cases, the why - and the practice below scores like a vocabulary session and earns the same XP.
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One question at a time, mixed across the exercises in this lesson. Miss one and it comes back round before the end. There are 17 in all: practise more afterwards if you want them.
Lesson 12 of 22 in this chapter