Breakdown of Quando a Júlia vier aqui, ela vai trazer papinha e fralda para a filha.
e
and
ir
to go (future auxiliary)
quando
when
aqui
here
Questions & Answers about Quando a Júlia vier aqui, ela vai trazer papinha e fralda para a filha.
Why is it vier and not vem or vir after quando?
Because Portuguese normally uses the future subjunctive after quando when the sentence refers to a future event.
- Quando a Júlia vem aqui... = When Júlia comes here... as a habitual or present-time idea
- Quando a Júlia vier aqui... = When Júlia comes here... in the future
So in this sentence, vier is the correct form because the speaker is talking about a future moment.
A useful pattern to remember is:
- quando + future subjunctive
- se + future subjunctive
- assim que + future subjunctive
when the meaning is future-oriented.
What exactly is vier?