seuteureseuga manheumyeon gongwoneseo cheoncheonhi georeoyo.

If I have a lot of stress, I walk slowly in the park.

Breakdown of seuteureseuga manheumyeon gongwoneseo cheoncheonhi georeoyo.

• ~에서: location particle
• ~가: subject particle
• 공원: park
• 걷다: to walk

Questions & Answers about seuteureseuga manheumyeon gongwoneseo cheoncheonhi georeoyo.

What does -(으)면 mean in 많으면?

-(으)면 is a conditional ending meaning if / when.

• 많다 (to be a lot) → 많으면 = if (there is) a lot (of it) / when it’s a lot
  In this sentence it sets up the condition: If you have a lot of stress, (then) …

Why is it 스트레스가 and not 스트레스를?

Because 스트레스 is the thing being described as 많다 (to be 많다 = “to be a lot”), so it functions like the subject of that descriptive verb.

• 스트레스가 많아요 = Stress is a lot / I have a lot of stress
  Using -를 would make it a direct object, which doesn’t fit with 많다 in this structure.

Does 스트레스가 많으면 mean “If stress is 많다” or “If I’m stressed”?

Literally it’s If stress is a lot, but naturally it often means If you have a lot of stress / If you’re very stressed. Korean commonly expresses “to be stressed” as 스트레스가 많다 or 스트레스를 많이 받다.

Is the subject you / I / we? Why isn’t it stated?