da bi: so that

Level B1 · Unit 13: Learning languages · Lesson 4: In class, and da bi

Da bi + the l-participle says why you do something. The participle agrees with the person, as always:

Učim se slovensko, da bi dobil boljšo službo. … so that I can get a better job.
Delam, da bi kupila stanovanje. I work so that I can buy a flat.
Grem v Ljubljano, da bi obiskal prijatelje. I'm going to Ljubljana to visit friends.

Compare plain da ("that"), which uses the normal tense: Mislim, da je to res. "I think that's true."

Practise this in the free course

This explanation comes from Unit 13, Lesson 4 of Slovenim, a free Slovenian course with dialogues, audio and exercises that check your answers.