In Korean, ‘거든요’ and ‘잖아요’ are both used to explain or clarify something, but they have different nuances and usage. ‘거든요’ is often used to provide new information or justify a statement, while ‘잖아요’ is used to remind the listener of something they should already know. Understanding the difference between these two expressions will help you sound more natural in Korean conversations. Let’s explore their meanings, usage, and examples.
Contents
1. Definition
- -거든요: Think of this as a way to provide background information or a soft explanation. It’s like saying “you see,” “because,” or “the thing is” in English. You’re giving a reason or some context the listener might not know.
- -잖아요: This one is used to remind someone of something they should already know or to correct them gently. It’s similar to saying “you know,” “don’t you remember?” or “isn’t it?” You’re pointing out something that’s (or should be) already understood.
2. Form (Structure)
| Expression | Structure | Example |
| 거든요 | Verb/Adjective + 거든요 | 바빠요. 일이 많거든요. (I’m busy. You see, I have a lot of work.) |
| 잖아요 | Verb/Adjective + 잖아요 | 피곤하잖아요. 어제 늦게 잤잖아요. (I’m tired, you know. I went to bed late yesterday.) |
3. Meaning & Usage
- 거든요 – Giving background information or explaining something new
- Used to provide a reason or explanation for something, often in casual speech.
- The listener may not know this information yet.
- Frequently used when providing explanations, not just answering “why” questions.
- Can be used to introduce new information voluntarily.
Examples:
- 오늘은 못 가요. 일이 있거든요. (I can’t go today. You see, I have something to do. Explanation: The speaker is providing a reason the listener might not know.
- 한국 음식을 좋아해요. 맛있거든요. (I like Korean food. You see, it’s delicious.)
Explanation: The speaker is giving a reason for their preference, possibly new information for the listener. - 비가 올 거예요. 날씨 예보를 봤거든요. (It will rain. You see, I checked the weather forecast.)
Explanation: The speaker is sharing information from a source the listener might not have seen. - 이 드라마를 추천해요. 정말 감동적이거든요. (I recommend this drama. You see, it’s really touching.)
Explanation: The speaker is providing a reason for their recommendation, likely new information. - 지금 출발해야 해요. 기차 시간이 다 됐거든요. (We need to leave now. You see, the train time is near.)
Explanation: The speaker is explaining the urgency, which might be new information to the listener.
- 잖아요 – Reminding or correcting someone
- Used when the speaker assumes or knows the listener already has the information.
- Often used to confirm, emphasize, or remind about previously mentioned or commonly known facts.
- Can sound persuasive, slightly argumentative, or express mild frustration depending on the tone.
- Used to seek agreement or point out something obvious.
Examples:
- 조용히 하세요. 도서관이잖아요. (Be quiet. It’s a library, you know.)
Explanation: The speaker assumes everyone knows libraries should be quiet. - 내일 시험이 있잖아요. 공부해야 해요. (We have a test tomorrow, you know. We should study.)
Explanation: The speaker is reminding the listener of a known fact about the test. - 지갑 가져왔지? 어제 잃어버렸잖아. (You brought your wallet, right? You lost it yesterday, remember?)
Explanation: The speaker is reminding the listener of a recent event they should remember. - 너무 덥지 않아요? 여름이잖아요. (Isn’t it too hot? It’s summer, you know.)
Explanation: The speaker is pointing out an obvious fact about the season to explain the heat. - 운동을 해야 해요. 건강이 중요하잖아요. (You need to exercise. Health is important, you know.)
Explanation: The speaker is emphasizing a commonly known fact about health to persuade.
Here’s a table summarizing the meaning and usage differences between ‘-거든요’ and ‘-잖아요’:
| Feature | –거든요 | -잖아요 |
| Primary Function | Introducing new information or giving explanations | Reminding or emphasizing known information |
| Listener’s Knowledge | Assumes listener might not know the information yet | Assumes listener already knows the information |
| Typical Usage | Providing reasons, answering “why” (but not limited to) | Confirming, emphasizing, or seeking agreement |
| Tone | Generally softer, more explanatory | Can be persuasive, slightly argumentative, or frustrating |
| Example Scenarios | Explaining why you’re late, recommending a movie | Pointing out an obvious fact, reminding about a test |
4. Key Points to Remember
- 거든요 is used to explain background reasons.
- 잖아요 is used to remind someone of something they should know.
- 거든요 often comes at the end of a sentence in casual speech.
- 잖아요 is often used when correcting someone.
5. Practice Exercises
Fill in the blanks with ‘거든요’ or ‘잖아요’.
- 오늘은 못 만나요. 일이 (많다)____.
(I can’t meet today because I have a lot of work, you see.) - 빨리 가야 해요. (늦다)____.
(We need to go quickly because we’re late, you know.) - 이거 정말 맛있어요. 제가 직접 (만들다)____.
(This is really delicious because I made it myself, you see.) - 밖에 비 와요. 우산 (가져가다)____.
(It’s raining outside, so we need to take an umbrella, you see) - 조용히 해 주세요. 아기가 (자고 있다)____.
(Please be quiet because the baby is sleeping, you know.) - 김치는 건강에 좋아요. 유산균이 (많다)____.
(Kimchi is good for your health because it has a lot of probiotics, you see.) - 여기가 조용해요. 사람이 별로 (없다)____.
(It’s quiet here because there aren’t many people, you see.) - 그 영화 안 봤어요. 재미없다고 (들었다)____.
(I didn’t watch that movie because I heard it wasn’t interesting, you see.) - 오늘 회의가 있어요. 모두 (참석하다)____.
(We have a meeting today. Everyone should attend, you know.) - 이 책은 베스트셀러예요. 모두들 (읽고 있다)____.
(This book is a bestseller. Everyone is reading it, you know.)
6. Answers
- 많거든요
- 늦었잖아요
- 만들었거든요
- 가져가야 하거든요
- 자고 있잖아요
- 많거든요
- 없거든요
- 들었거든요
- 참석해야 잖아요
- 읽고 있잖아요
7. Common Mistakes and Tips
⚠️ Mistake 1: Using ‘잖아요’ for New Information
Incorrect: 내일 비가 올 거잖아요. ❌ (It’s going to rain tomorrow, you know.) [When the listener doesn’t know this information]
Correct: 내일 비가 올 거예요. ✅ (It’s going to rain tomorrow.)
💡 Tip: Only use ‘잖아요’ for information that you believe the listener already knows or should know.
⚠️ Mistake 2: Using ‘거든요’ for Obvious or Known Information
Incorrect: 여기는 도서관이거든요. 조용히 해주세요. ❌ (This is a library, you see. Please be quiet.)
Correct: 여기는 도서관이잖아요. 조용히 해주세요. ✅ (This is a library, you know. Please be quiet.)
💡 Tip: Use ‘거든요’ when providing new information or explanations, not for reminding someone of obvious facts.
⚠️ Mistake 3: Overusing ‘잖아요’ in Formal Situations
Incorrect: 사장님, 이 보고서는 중요하잖아요. ❌ (Boss, this report is important, you know.)
Correct: 사장님, 이 보고서는 중요합니다. ✅ (Boss, this report is important.)
💡 Tip: In formal situations, it’s often better to use more polite forms instead of ‘잖아요’, which can sound too casual or presumptuous.
Understanding the difference between ‘거든요’ and ‘잖아요’ will help you sound more natural in Korean conversations. ‘거든요’ is great for giving explanations, while ‘잖아요’ is used to remind someone of known facts. Practice using them in real-life situations to improve fluency.