There are sooooooooooo many verb endings in Korean but I'll list you the most important ones. 가다 dictionary form 가(요) simple present (formal 갑니다) 가고 있어(요) present continuous (formal 가고 있습니다) 갔어(요) simple past (formal 갔습니다) 갈 거야 (거예요) simple future (formal 갈 겁니다) 갈게(요) when proposing your help to someone, or to soften what you're saying to not sound rude 가겠어(요) uncertain future, or expresses determination/volition 가자 let's go (formal 갑시다) 가면 if I go 가지(요) expresses that your listener knows what you're talking about 가잖아(요) when correcting someone 가는데 but, or as a connective verb ending before asking a question 가지만 but 가기 -ing (not always usable, there are some set expressions -기를 바라다/원하다, -기 전에, -기 위해) 가서 indicating a reason (cannot be used if result is imperative) 가니까 indicating a reason (can be used if result is imperative) 갈 수 있어(요) can go 갈 수 없어(요) can't go 못 가(요) / 가지 못해(요) can't go 안 가(요) / 가지 않아(요) doesn't go 가야 해(요)/돼(요) I have to go 가니 interrogative, can sound feminine 가냐 interrogative, can sound mischievous 갈까(요) interrogative, wondering something, talking to yourself 가나(요) interrogative (without the -요 it's the same as 갈까, with the -요 you can add it to any question) 갑니까 formal interrogative 간 past adjective (간 곳 the place I went to) 가는 present adjective (가는 곳 the place I go/am going to) 갈 future adjective (갈 곳 the place I will go to)