Hello and "boa noite", Portuguese Warriors. Today I'll teach you about the Portuguese's rules. How you know, portuguese have a lot of useless things. But the today's useless thing is "Mas/Mais":

Here we go. In portuguese, we have two words that is a little similar, but they aren't. Mas e Mais have different meanings. "MAS" is for opposition, so, "mas" is like "but" or "however". "MAIS" is for addition, so, "mais" means "more".

For example:

Eu comprei esse bolo, MAS eu prefiro o bolo de chocolate.

I bought this cake, BUT I prefer chocolate cake.

Eu joguei pouco, eu quero jogar MAIS.

I played too few, I'd like to play MORE.