When you go, you
will buy a soda.
If you buy a soda, you
will get refills.
As soon as you get refills, you
will sit down with friends to talk.
Those who sit and talk with friends,
will have a great time.
Yes, all of those sentences require the 'future subjunctive' in Portuguese.
So, if you listen to Orlando, Valdo, Michelle, and José Luís, you
will also learn how to use the future subjunctive.
Don't be intimidated, Spanish speaking friends, it's easier than you think!