One of the things that I love about learning a new language are the little idiosyncrasies that make that language unique. Brazilian Portuguese has a lot of these!
In particular, Brazilians have a very cool way of saying “yes” to yes or no questions, that I have not heard in any other language : they tend to give an affirmative response by using the conjugated verb, instead of saying “yes.”
For instance, if you were to ask someone “voce fala portugues?” (“Do you speak Portuguese?”), more likely than not, instead of saying “sim” (“yes”), they would respond “Falo” (“I speak”).
Another example: if someone asks, “Voce mora na franca?” (“Do you live in France?”), the other person would likely respond “Moro” (“I live”).
This works the same way, even when 2 verbs are used to form the future tense. For example, if someone asks, “Voce vai trabalhar hoje à noite?” the person would respond “Vou.”
Or when directed to more than one person: “Voces querem ir na festa hoje à noite?” (“Do you all want to go to the party tonight?”) and the affirmative response would be “Queremos.”
That being said, this doesn’t mean that Brazilians don’t say “sim” in response to a question; I have heard both. But the use of the conjugated verb is certainly the most common way to mark one’s affirmation. So if you really want to sound Brazilian…this is one step in the right direction!