haengsajange keun hyeonsumageul miri georeoyo.

에 marks the place related to the action. In this sentence, 행사장에 means at / in the event venue or to the event venue, depending on how you think about the action.

With 걸다 (to hang), 에 often marks the location where something gets hung:

• 벽에 사진을 걸어요. = I hang a picture on the wall.
• 행사장에 큰 현수막을 미리 걸어요. = We/they hang a big banner at the event venue in advance.

So 행사장에 tells you where the banner is being put up.

Because 크다 is the dictionary form, but when an adjective directly modifies a noun, Korean uses a modifier form.

Here:

• 크다 = to be big
• 큰 = big (used directly before a noun)

So:

• 큰 현수막 = a big banner

This is a very common pattern in Korean. Compare:

• 작다 → 작은 = small
• 좋다 → 좋은 = good
• 예쁘다 → 예쁜 = pretty

So 큰 현수막 is the natural way to say big banner.

을/를 marks the direct object of the verb — the thing being acted on.

In this sentence:

• 현수막을 = the banner (as the thing being hung)

The verb is 걸어요 (hang), so what is being hung?
→ 큰 현수막

That is why it takes 을:

• 현수막 ends in a consonant, so it becomes 현수막을

Quick rule:

• noun ending in a consonant + 을
• noun ending in a vowel + 를

미리 means in advance, ahead of time, or beforehand.

It is an adverb, so it usually goes before the verb, but Korean word order is fairly flexible as long as it stays in a natural position.

In this sentence:

• 행사장에 큰 현수막을 미리 걸어요.

This means the hanging is done before it is needed, not at the last minute.

You may also hear similar word order like:

• 행사장에 미리 큰 현수막을 걸어요.
• 큰 현수막을 행사장에 미리 걸어요.

These are all possible, though the original sentence sounds very natural.

The base form is 걸다, which here means to hang something.

Conjugation:

• 걸다 → stem 걸-
• polite present ending -어요
• 걸어요

So:

• 걸어요 = hang / hangs / am hanging / are hanging, depending on context

Korean present tense often covers both a simple present and a near-present/progressive meaning, depending on the situation.

Not always. 걸다 has several meanings in Korean, depending on context. Some common ones are:

• to hang something
• to place/put up
• to 걸다 a phone call = to make a call
• to 걸다 a bet = to bet / stake

In this sentence, because the object is 현수막 (banner), the meaning is clearly to hang / put up.

So vocabulary in Korean is often understood through context, not just by one fixed English translation.

There are two separate ideas here.

1. Why not a different verb like an intransitive form?
걸다 is transitive: you hang something.
걸리다 is intransitive/passive-like: something is hung / gets caught / takes time, depending on context.

Compare:

• 현수막을 걸어요. = Someone hangs the banner.
• 현수막이 걸려 있어요. = The banner is hanging / has been put up.

This sentence focuses on the action of putting it up, so 걸어요 is the right choice.

2. Why is there no subject?
Korean often omits the subject when it is obvious from context. English usually wants a subject like we, they, or staff, but Korean often leaves it out.

So this could mean:

• We hang a big banner in advance at the venue.
• They put up a big banner in advance at the venue.
• You should hang a big banner in advance at the venue.

The exact subject depends on context.

걸어요 is in the polite informal style, often called the -아요/-어요 style.

It is:

• polite
• natural in everyday conversation
• very common in speech

Compare:

• 걸어요 = polite, conversational
• 겁니다 / 겁니까 = more formal
• 걸어 = casual/plain intimate
• 겁니다 in a written instruction or formal announcement may sound more official

So the sentence feels polite and natural, not stiff.

Yes. Korean word order is more flexible than English, especially with adverbs and phrases. The core relationships are shown by particles like 에 and 을, so the sentence can be rearranged to some extent.

For example, these are all possible:

• 행사장에 큰 현수막을 미리 걸어요.
• 행사장에 미리 큰 현수막을 걸어요.
• 큰 현수막을 행사장에 미리 걸어요.

They all mean roughly the same thing, but the emphasis changes slightly.

The original order is very natural and neutral:

• place → object → adverb → verb

It can feel like either one in English.

With 걸다, 에 marks the location where something is hung, so in many cases English translates it as:

• at the venue
• in the venue
• on/onto a place, depending on the noun

For example:

• 벽에 걸어요 = hang it on the wall
• 문에 걸어요 = hang it on the door
• 행사장에 걸어요 = hang it at/in the event venue

So the exact English preposition depends on the noun, but the Korean particle 에 is doing the location-marking job.

현수막 usually means a large banner, especially one used for:

• events
• promotions
• announcements
• celebrations
• public messages

It often suggests a banner displayed in a visible public place rather than a small decorative sign.

So 큰 현수막 sounds very natural for an event setting, because large banners are commonly used at venues.

In natural speech, pronunciation can sound a bit smoother than the spelling suggests.

A learner may hear something close to:

• 큰 현수마글

This is because 현수막을 is pronounced with linking between syllables:

• 현수막을 → roughly 현수마글

Also, 큰 is often pronounced quickly and lightly before the next word.

You do not need to change the spelling — this is just a pronunciation point to help with listening.