V1+(으)면 V2 is used to express that if V1 is met, V2 may take place
안 먹으면 배고픈을 거예요
If you don’t eat, you will be hungry
안 자면 피곤할 거예요
If you don’t sleep, you will be tired
한국어를 공부하면, 재미있어요
If you study Korean, it’s fun
시간 되면 같이 밥을 먹을까요?
If you have time, shall we eat together?
날씨가 좋으면 해변에 갈 거예요
If the weather is good, I’m going to go to the beach
집에 가면 전화하세요
Call me when you’re going home