We've written about ACABAR de before -- because it's such a useful combination. When you place a de after acabar, it takes on the meaning of, to have just. ACABAR in Portuguese by itself means: to end, to end-up, to finish. Everyone gets these mixed-up (confundida) ~ That DE makes all the difference!
Use ACABAR + de to express the idea that something just (now happened; You just finished doing something. Learn to use this combo ~ it's 2nd only to gostar + de in popularity.
Examples of acabar in Portuguese
A few examples will help clear this up:
Acaba sendo diferente. » It winds up being different.
Essa história acaba hoje. » This story ends today.
Como acaba exatamente, ninguém sabe. » How exactly it ends up no one knows.
Ela sempre acaba virando o chefe » She always ends up becomming the boss.
Diga-me que essa agonia acaba logo. » Tell me that this agony ends soon.