-(으)ㄹ수록

-(으)ㄹ수록 means 'the more A happens or the stronger A is, the more B changes along with it.'

정도·비교Degree & comparison

Han: -(으)ㄹ수록 does not take the past tense marker -았/었-; attach it directly to the verb stem.

Examples

이 노래는 들을수록 좋아요.The more you listen to this song, the more you like it.

날씨가 추울수록 따뜻한 국물이 생각나요.The colder the weather, the more I crave hot soup.

바쁠수록 건강을 챙겨야 해요.The busier you are, the more you should take care of your health.

한국어는 공부하면 할수록 재미있어요.The more I study Korean, the more fun it gets.

V/A+(으)ㄹ수록 (often: V/A + (으)면 + same V/A + (으)ㄹ수록)

N+일수록

먹다 → 먹을수록, 가다 → 갈수록, 춥다 → 추울수록, 만들다 → 만들수록, 학생 → 학생일수록

Do not put past tense -았/었- before -(으)ㄹ수록: say 먹을수록, not 먹었을수록.
It is a connecting ending, so the sentence cannot end with it; the second clause must describe a change or degree (often with 더, 점점).
For emphasis, the same verb or adjective is usually repeated with -(으)면: 보면 볼수록, 생각하면 할수록.
Stem changes follow normal irregular rules: ㄹ-stems just add 수록 (살수록), ㅂ-stems become 우 (추울수록).

Wrong: ~~많이 먹었을수록 살이 쪄요.~~

Right: 많이 먹을수록 살이 쪄요.

-(으)ㄹ수록 does not take the past tense marker -았/었-; attach it directly to the verb stem.

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