Learn Hardcore Korean: biga geuchimyeon gongwoneseo sanchaekhal geoyeyo. - When the rain stops, I will take a walk in the park.

It’s the conditional “if/when.” In 비가 그치면, it can mean “when the rain stops” (neutral/expected condition) or “if the rain stops” (uncertain). Context decides which feels more natural.

Why is 비 marked with -가 instead of -는?

그치다 (“to stop”) is intransitive, so the rain is the grammatical subject: 비가 그치다. Using 비는 would topicalize “the rain,” and 비는 그치면 sounds odd; 비가 그치면 is natural.

Can I say 비가 그칠 때 instead of 비가 그치면?

Yes, but nuance differs:

-ㄹ/을 때: time marker, “when/at the time (that) it stops.”
-면: condition, “if/when it stops.” Here -면 frames it as a condition to do the walk.

Can I use 멈추다 instead of 그치다 for rain?

You’ll hear 비가 멈추다, but 비가 그치다 is more idiomatic/natural for rain. 멈추다 is common for machines/traffic, movement, etc.

Is 그치다 irregular? How do you get 그치면?

It’s regular. 그치다 + -면 → 그치면. Other forms: 그쳤어요 (past), 그치고 (and then stops), 그치자마자 (as soon as it stops).

Why is it 공원에서 and not 공원에?

에서 marks the place where an action happens (do something “in/at” a place): 공원에서 산책하다. 에 marks destination or static location: 공원에 가다 (go to the park), 공원에 있다 (be at the park).

Can I say 공원을 산책할 거예요?

It’s possible (meaning “stroll around the park”), but in everyday speech 공원에서 산책할 거예요 is much more natural. 공원을 산책하다 sounds more written/formal or stylistic.

What exactly does -(으)ㄹ 거예요 express?

It’s a common future/intention/prediction form (“will/going to”). Here 산책할 거예요 means “I’m going to take a walk” (plan/intention).

Why is it spelled 거예요 and not 거에요?

It’s the contraction of 것이에요 → 거예요. After a vowel, 이에요 contracts to 예요, so 거예요 is correct; 거에요 is a misspelling.

Is it 산책할거예요 or 산책할 거예요?

Write 산책할 거예요 with a space. 할 modifies the noun 거, so they’re separate. Inside that chunk, 거예요 has no space.

Can I add 만약? Does it change the nuance?

Yes: 만약 비가 그치면 …. 만약 highlights the hypothetical “if” feeling. Without it, the sentence can feel more neutral or “when”-like.

How do I say “as soon as the rain stops”?

비가 그치자마자 공원에서 산책할 거예요. (as soon as)
비가 그치고 나면 공원에서 산책할 거예요. (after it has stopped)
비만 그치면 공원에서 산책할 거예요. (“the moment it stops,” strong emphasis)

How do I change the politeness level?

Casual: 비가 그치면 공원에서 산책할 거야.
Polite (current sentence): … 산책할 거예요.
Formal: … 산책할 겁니다.

Do I need to say 저는?

No. Korean often drops the subject when it’s clear from context. You can add 저는 for emphasis or contrast: 저는 비가 그치면 ….

How do I say the negative version (“If it doesn’t stop raining, I won’t take a walk”)?

비가 안 그치면 공원에서 산책 안 할 거예요.
More formal negative: 비가 안 그치면 공원에서 산책하지 않을 거예요.

Can the conditional clause go at the end, like “공원에서 산책할 거예요, 비가 그치면”?

Korean prefers the if/when clause first. Ending with it can sound like an afterthought: 공원에서 산책할 거예요. 비가 그치면. It’s used in speech but is less tidy.

Can I put 요 after the -면 clause: 비가 그치면요?

Yes, in conversation you can say 비가 그치면요, … to keep a polite tone. You still need to finish with a polite main clause.

What’s the difference between 산책하겠어요 and 산책할 거예요?

-겠어요 often shows will/resolution or conjecture. 산책할 거예요 is the default for a plan/intention. 산책하겠습니다 is a formal, firm resolve (“I will indeed take a walk”).