-(으)ㄹ 테니까
I’ll do it, so… / it must be, so…
Gives a reason built on something not yet settled — your own intention, or a strong guess. Because it is a reason ending, it leads naturally into a request.
Build it
Pick a verb
When to use it
Attachment is the standard rule with the ㄹ short form: 만들다 gives 만들 테니까.
With I as subject it states an intention offered as grounds for what you are asking: 제가 할 테니까 걱정하지 마세요. With anyone else it becomes a confident guess: 지금쯤 도착했을 테니까 전화해 보세요.
Like -(으)니까, it accepts commands and suggestions in the second clause — in fact that is where it usually appears.
For a guess about something already finished, the past goes inside: -았/었을 테니까. The related -(으)ㄹ 텐데 sets up background instead of a reason.
How to attach it
| Stem type | Form | Example |
|---|---|---|
| Ends in a vowel | -ㄹ 테니까 | 하다 → 할 테니까 |
| Ends in a consonant | -을 테니까 | 먹다 → 먹을 테니까 |
| Ends in ㄹ | nothing added | 만들다 → 만들 테니까 |
| First person | intention | 제가 할 테니까 |
| Third person | strong guess | 바쁘실 테니까 |
| Past guess | -았/었을 테니까 | 도착했을 테니까 |
In use
제가 저녁을 만들 테니까 좀 쉬세요.
I’ll make dinner, so you go and rest.
제가 연락할 테니까 걱정하지 마세요.
I’ll get in touch, so don’t worry.
지금쯤 도착했을 테니까 전화해 보세요.
He’ll have arrived by now, so try calling him.
길이 막힐 테니까 지하철로 가세요.
The roads will be jammed, so take the subway.
선생님은 바쁘실 테니까 나중에 여쭤봅시다.
The teacher will be busy, so let’s ask her later.
제가 표를 살 테니까 자리를 맡아 주세요.
I’ll buy the tickets, so please save us seats.
Compared with
-(으)니까
-(으)니까 gives an established reason; -(으)ㄹ 테니까 gives one that is still ahead — your plan, or your prediction.
비가 오니까 우산을 가져가세요. (it’s raining) / 비가 올 테니까 우산을 가져가세요. (it’s going to rain)
-(으)ㄹ 거니까
Close in meaning and more casual. -(으)ㄹ 테니까 sounds a little more considerate, which is why offers of help tend to use it.
제가 할 테니까 쉬세요. / 제가 할 거니까 쉬어.
-(으)ㄹ 텐데
Same 테 base, different ending. 텐데 supplies background and often trails off; 테니까 supplies a reason and leads into a request.
바쁘실 테니까 나중에 봅시다. (so let’s meet later) / 바쁘실 텐데 괜찮으세요? (you must be busy — are you alright?)
Watch out
제가 저녁을 만들을 테니까 쉬세요.
제가 저녁을 만들 테니까 쉬세요.
A stem ending in ㄹ already supplies it, as with 만들 거예요 and 만들 수 있다.
지금쯤 도착할 테니까 전화해 보세요. — meaning “he’ll have arrived”
지금쯤 도착했을 테니까 전화해 보세요.
For a guess about something already complete, the past goes inside the ending.
그 사람이 갈 테니까 저도 갈게요.
그 사람이 갈 테니까 저도 가려고요.
With a third-person subject the ending states your guess, not their promise. Keep the second clause as your own reaction rather than a commitment on their behalf.
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