changmuneul yeolmyeon gongwoni boyeoyo.

If you open the window, you can see the park.

Breakdown of changmuneul yeolmyeon gongwoni boyeoyo.

• ~이: subject particle
• ~을: object particle
• 공원: park
• 열다: to open

Questions & Answers about changmuneul yeolmyeon gongwoni boyeoyo.

What does -면 mean in 열면?

-면 is a conditional ending. It means if, when, or once, depending on context.

So 열면 comes from 열다 (to open) + -면, giving the idea:

• if you open
• when you open
• once you open

In this sentence, it often feels very natural as when/if you open the window, the park is visible.

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Why is it 창문을 and not 창문이?

창문을 uses the object particle -을/를 because 창문 is the thing being opened.

• 창문 = window
• 열다 = to open
• 창문을 열다 = to open the window

So the window is the object of the verb 열다.

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Why is it 공원이 and not 공원을?

Because with 보이다 / 보여요, the thing that is seen is usually marked with the subject particle -이/가, not the object particle -을/를.

So:

• 공원이 보여요 = the park is visible / the park can be seen

Here, 공원 is not something you are actively looking at as a direct object in the same way as with 보다. Instead, it is the thing that appears in view.

That is why 공원이 보여요 sounds natural.

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