-거든요 Korean Grammar: You See / Because

-거든요 is one of those Korean endings that sounds natural in conversation but becomes awkward when translated with one fixed English word.

It often supplies background or explanation that the speaker believes matters to the listener:

오늘은 못 가요. 약속이 있거든요.
I can't go today. I have plans, you see.

Open the full -거든요 reference while studying examples.

What -거든요 is doing

The speaker first says something, then gives information that explains or supports it.

이 식당에 자주 와요. 맛있거든요.
I come to this restaurant often. It's good, you know.

The second sentence is not merely a logical cause. It is explanatory context offered to the listener.

Why “because” is incomplete

English may translate some examples with “because,” but Korean has many reason patterns:

• -아/어서
• -(으)니까
• -기 때문에
• -거든요

They do different conversational work.

Compare the broader -아/어서 vs -(으)니까 guide before treating every reason ending as interchangeable.

Tone matters

With a warm or neutral tone, -거든요 can sound like helpful explanation.

With a sharper tone, it can sound defensive:

제가 이미 했거든요.
I already did it, you know.

The exact social effect comes from intonation, context, and what the listener was assumed to know.

That makes native audio essential for this pattern.

Formation

Attach -거든요 to the relevant predicate form. You will also see related -거든 constructions with different clause behavior, so do not assume every visible 거든 has the identical function.

For this article, focus on the sentence-final polite explanatory use.

Good contexts to practice

Explaining a refusal

오늘 일찍 가야 해요. 내일 시험이 있거든요.
I have to leave early today. I have a test tomorrow, you see.

Explaining a recommendation

그 카페에 가 보세요. 커피가 맛있거든요.
Try that cafe. The coffee is good, you see.

Explaining unexpected behavior

요즘 매일 운동해요. 건강해지고 싶거든요.
I exercise every day these days. I want to get healthier, you see.

Common mistake: putting it everywhere

Once learners discover -거든요, it can become a filler attached to every explanation. That may make speech sound oddly defensive or over-explanatory.

Use it when the listener benefits from the background information.

Listening drill

When you hear -거든요 in a drama, podcast, or conversation, pause and ask:

1. What statement came before it?
2. What does the speaker think the listener needs to understand?
3. Does the tone sound helpful, corrective, embarrassed, or defensive?

That question teaches the pragmatics better than an English gloss.

Continue with -잖아요, -는데, and the speaking hub for more conversational endings.