Translation:I'll be back.
Future tense is easy, and is simply a matter of adding ~겠다 to the stem of a word: 나는 먹다 = I eat (unconjugated) 나는 먹겠다 = I will eat 나는 가다 = I go (unconjugated) 나는 가겠다 = I will go 나는 배우다 = I learn (unconjugated) 나는 배우겠다 = I will learn Two verbs specifically that are often conjugated in the future tense without actually having a meaning in the future tenses are 알다(to know) and 모르다(to not know). I don’t want to make any example sentences (because they would be too complicated at this point), but it would be good to remember that the words 알다 and 모르다 are often conjugated to 알겠다 or 모르겠다. Although they are conjugated to the future tense, those two words are typically used to express that somebody knows/doesn’t know something in the present tense. Also note that the ending of the conjugation will often change as well depending on the different honorifics that you will learn in the next lesson.