Let's Learn Korean - Particle 는/(으)ㄴ데, 는/(으)ㄴ데요, 는/(으)ㄴ데도 -

난 오늘도 영 못 잠들겠는데  ...

The function of this conjunction is to give background information of the main clause. 는데 is used for root word of verbs. For adj and copula, 은데 is used for root word which ends by consonant, while ㄴ데 is for vowel.

Example:  verb  :  -  가다               →  가는데

                                -  이야기하다  →  이야기하는데

                                -  있다               →  있는데

                                -   없다              →  없는데

                   adjective and copula

         consonant  :  -  싫다               →  싫은데

                                -  좋다               →  좋은데

         vowel          :  -  행복하다      →  행복한데

                                -  이상하다      →  이상한데

         copula        :  -  이다               →  인데

                                -  아니다           →  아닌데

1. Particle 는/(으)ㄴ데

Example:  -  날씨가 너무 좋은데 바닷가에 갑시다!  =  Since the weather is so nice, let's go to the beach!

                  -  어제 추웠는데 밖에 사람이 많았어요  =  Although yesterday was cold, but there were so many people outside

                  -  여기는 도서관인데 좀 조용히 해 주세요  =  This is library, so please be quiet

                  -  그 사람은 얼굴이 잘생긴데 왜 안 좋아요?  =  He's handsome, but why you don't like him?

Confuse? does the particle mean 'so' or 'but'? kkkkk

Like i've said earlier of this post, it's being used to give background information of the main clause.

Now take a look at this example to get more understanding..

Example:  -  한국어를 공부하는데 재미있어요  =  I'm studying Korean and it's so interesting

The meaning of this particle can be everything. It depends on the main clause.

2. Particle 는/(으)ㄴ데요

This particle is used as the closing sentence. as you know, the '요' is the sign of polite form (read about polite form here).

In this particle you don't have to tell the main clause.

WHY? cause sometimes you don't wanna or can't tell the reason bcuz it's just too complicated to be told or it's kinda impolite, so the only thing you can do is only saying the point.

Example:  A:  생일파티에 갈 수 있어요?       =  Can you go to the birthday party?

                  B:  아 이번 주는 정말 바쁜데요     =  Ah this week I'm so busy, so.... 

Maybe B's real reason of not going to the party because he thinks his business is more important than the party, but since he thinks it ought to be so impolite of him to say that, so he used this particle to avoid telling the reason.

희본씨, 나 배고픈데...

He only said that he's hungry because he doesn't feel good to ask Heebon to cook for him.

3. Particle 는/(으)ㄴ데도

This particle means 'although'. The using term of 는/(으)ㄴ is the same as 는/(으)ㄴ데.

Example:  -  많은 돈이 있는데도 그 사람이 거만하지 않아요  =  That person isn't arrogant although he's rich

                  -  주말인데도 손님이 별로 없네요  =  Although it's weekend, but there are only a few of visitors
                  -  알고 있는데도 모르는 체 하더라고요  =  He pretends to know nothing even though he knows something