haesbichi ganghalsurok mojaga kkok piryohae.

The stronger the sunlight gets, the more you really need a hat.

Breakdown of haesbichi ganghalsurok mojaga kkok piryohae.

• ~이: subject particle
• ~가: subject particle
• 꼭: definitely
• 필요하다: necessary

Questions & Answers about haesbichi ganghalsurok mojaga kkok piryohae.

What does -ㄹ수록 mean in 강할수록?

-ㄹ수록 means the more..., the more... or as ... more and more.

So 햇빛이 강할수록 모자가 꼭 필요해 means something like:

• The stronger the sunlight, the more necessary a hat is.
• As the sunlight gets stronger, you really need a hat.

Here, 강하다 becomes 강할수록:

• 강하다 = to be strong/intense
• 강할수록 = the stronger it is / the more intense it is

This pattern is very common in Korean:

• 비쌀수록 좋다고 생각하는 사람도 있어. = Some people think the more expensive it is, the better.
• 많이 할수록 늘어요. = The more you do it, the more you improve.

Why is it 강할수록 and not 강해질수록?

Both can work, but the nuance is slightly different.

• 강할수록 = the stronger it is
• 강해질수록 = as it becomes stronger

In many contexts, these are very close in meaning.

With 햇빛이 강할수록, the sentence sounds like a general statement about degree:

• The more intense the sunlight is, the more a hat is needed.

With 햇빛이 강해질수록, the sentence would focus a little more on change over time:

• As the sunlight becomes stronger, a hat becomes more necessary.

So the original sentence is natural and compact, especially for a general truth.

Why is the subject marked with 이 in 햇빛이 강할수록?