내 하늘엔 별이 없어

The line, explained

Some lines feel like a whole song in miniature. 내 하늘엔 별이 없어 means 'there are no stars in my sky', and it is the kind of quiet, aching verse a K-pop ballad opens with. Grammatically it is beautifully simple, because it is built on one of the most important word pairs in Korean: 있어 and 없어, 'there is' and 'there isn't'. Learn those two and you can describe almost any world.

내 means 'my'. It is the casual short form of 나의, and you will hear it constantly: 내 사랑, my love; 내 꿈, my dream. The polite version is 제. 하늘엔 is 하늘, sky, plus two small tags squeezed together: 에, meaning 'in' or 'at', and 는, which marks the topic, 'as for'. So 하늘엔 means 'as for in my sky', which in English is simply 'in my sky'. When spoken, the ㄹ slides forward: ha-neu-ren.

별이 is 'stars', with 이 marking it as the subject. 별 means star, and Korean does not need a plural ending here; 별 can be one star or many. The subject marker is 이 after a consonant and 가 after a vowel. Notice the sound again: the ㄹ at the end of 별 links to 이, so you hear byeo-ri. Korean is full of these smooth joins, and they are a big part of why it sounds so flowing in songs.

없어 is the casual form of 없다, 'to not exist'. Its opposite is 있어, from 있다, 'to exist'. These two verbs do double duty. They mean 'there is / there isn't', and they also mean 'have / don't have': 나 시간 있어, I have time; 돈 없어, I've got no money. Korean thinks of having as 'there is something, for me'. Add 요 to be polite: 있어요, 없어요. Pronounce 없어 as eop-seo; the ㅄ cluster lets its ㅅ carry over.

Sing it slowly: nae ha-neu-ren byeo-ri eop-seo, and let the last syllable fade. Then turn the sadness around with the other half of the pair: 내 하늘엔 별이 있어, there are stars in my sky. Or put the person back into the picture: 내 하늘엔 네가 있어, you're in my sky. One verb change and the song goes from heartbreak to a love song. That is the power of 있어 and 없어.