TOPIK I Grammar · Ch.5 Tense, Progress & States 02

TOPIK I Grammar · Ch.5 Tense, Progress & States 02

'-겠- vs -(으)ㄹ 거예요' - Two Futures: "I'll" and "I'm Going To"

English marks the future in more than one way - "I'll get the phone" (decided this second) and "I'm going to visit Korea" (planned already). Korean splits the same ground, but not along the same line: the on-the-spot ending below belongs to formal speech, and casual Korean has a separate ending for it that comes in a later lesson.

Key point -겠- ≈ a formal "I'll" - on-the-spot willingness in polite or formal speech, plus strong guesses (맛있겠어요! = that looks delicious!). -(으)ㄹ 거예요 ≈ "I'm going to" - plans and calm predictions. Form: batchim → 을 거예요, vowel → ㄹ 거예요.

How to use it

The will/going-to feeling transfers well, as a guide rather than a perfect match. When you decide as you speak - volunteering or promising at that moment - use 겠: 제가 하겠습니다 (= I'll do it). When the future was already on your calendar, that's ㄹ 거예요: 내년에 한국에 갈 거예요 (= I'm going to Korea next year). Predictions about the world usually take ㄹ 거예요 too: 내일 비가 올 거예요.

겠 has a second use that English "will" doesn't have: reacting to what's in front of you. See a cake, say 맛있겠어요! - "that must be delicious!" It also appears in set politeness phrases you will use daily: 잘 먹겠습니다 (said before eating) and 알겠습니다 (= understood). The first literally means "I will eat well," and English has no equivalent phrase. Learn those two as whole units - fixed phrases you'll use at every meal and in every workplace.

At a glance

Sentence	Form	Feeling
제가 문을 닫겠습니다	겠	volunteering now
와, 맛있겠어요!	겠	strong guess at the scene
알겠습니다	겠	fixed phrase: understood
주말에 쉴 거예요	ㄹ 거예요	plan
내일 비가 올 거예요	ㄹ 거예요	calm prediction
동생은 지금 집에 있을 거예요	을 거예요	guess about now

Examples

방학에 고향에 돌아갈 거예요. I'm going to go back to my hometown during the vacation. - A plan already made → ㄹ 거예요.

처음 뵙겠습니다. 잘 부탁드리겠습니다. Nice to meet you. I'll be counting on you. - Set greetings keep 겠; it softens the tone.

케이크가 정말 맛있겠어요! That cake must be really delicious! - Guessing from what is in front of you → 겠.

Common mistakes

❌ 내년에 부산에 가겠어요. → ⭕ 내년에 부산에 갈 거예요. If you use 겠 for a plan you made earlier, it sounds like a serious promise - much heavier than you meant. If it was decided before this conversation, ㄹ 거예요 is the natural fit.

❌ 주말에 친구를 만날 꺼예요. → ⭕ 만날 거예요. It's pronounced with a tense [꺼] sound, but it's always written 거예요. Spelling by ear here is one of the most common written errors at this level - and the writing section counts it.

Quick check

Fill each blank with -겠- or -(으)ㄹ 거예요. Where the blank follows a noun, add 하다 in the form the sentence needs.
1. (Greeting before a meal) 잘 먹(      )습니다.
2. (A plan) 내년에 한국에서 공부(      ).
3. (A guess) 하늘이 어두워요. 곧 비가 오(      )어요.

Show answers

1. 겠 (polite intention at that moment; 잘 먹겠습니다 is a set phrase)   2. 할 거예요 (a plan decided before now)   3. 겠 (a guess from what you see now)

💡 Study tip - Ask "when did I decide?" Decided before this moment → ㄹ 거예요. Deciding as the words leave your mouth → 겠. That one-second test tells you the future was not planned; the formal ending here is the one to use when the setting is polite or formal.