haengsa jeone jawonbongsajareul deo mojiphaeyo.

전에 means before. It attaches to the noun 행사 (event), so 행사 전에 means before the event.

A very common pattern is:

• noun + 전에 = before noun
• verb stem + 기 전에 = before doing verb

So here, because 행사 is a noun, you use 행사 전에.

The -를 particle marks the direct object of the verb. In this sentence, the thing being recruited is 자원봉사자 (volunteers), so it becomes 자원봉사자를.

Breakdown:

• 자원봉사자 = volunteer
• 자원봉사자를 = volunteers (as the object)

Because 모집하다 means to recruit, it needs something to recruit, and that object is marked with -을/를.

Korean often does not mark plural when it is clear from context.

So 자원봉사자 can mean:

• a volunteer
• volunteers

In this sentence, because of the overall meaning and especially 더 (more), it is naturally understood as more volunteers, not just one volunteer.

Korean does have a plural marker -들, but it is not required here.
So 자원봉사자들을 더 모집해요 is possible, but it sounds less natural in many ordinary contexts.

더 means more or additional(ly).

Here it means they are recruiting more volunteers than they already have, or recruiting additional volunteers.

It commonly appears before the verb or before the thing being increased:

• 더 먹어요 = eat more
• 더 공부해요 = study more
• 사람을 더 모집해요 = recruit more people

So in this sentence, 더 adds the idea of more volunteers.

The dictionary form is 모집하다, which means to recruit or to gather applicants/participants.

It is made of:

• 모집 = recruitment / gathering recruits
• 하다 = to do

When 하다 verbs are conjugated in polite present style, 하다 becomes 해요:

• 모집하다 → 모집해요

So 모집해요 is the polite present-style form of 모집하다.

Grammatically, 모집해요 is in the present polite form, but in Korean, that form can also refer to the near future depending on context.

So this sentence could mean something like:

• We recruit more volunteers before the event.
• We’re recruiting more volunteers before the event.
• We will recruit more volunteers before the event.

Korean often uses the present form for planned or scheduled future actions when the context makes the time clear.

The subject is omitted because Korean often leaves out subjects when they are understood from context.

So the sentence does not explicitly say:

• we
• they
• the organizers

It just says that more volunteers are recruited before the event, with the doer understood from the situation.

In real Korean, this is very normal. If the speaker wants to specify the subject, they can add it:

• 우리는 행사 전에 자원봉사자를 더 모집해요. = We recruit more volunteers before the event.

But usually, leaving it out sounds natural.

Korean often places time expressions early in the sentence, often near the beginning.

A very common Korean order is:

• time + object + verb

So:

• 행사 전에 = before the event
• 자원봉사자를 더 = more volunteers
• 모집해요 = recruit

That gives:

• 행사 전에 자원봉사자를 더 모집해요.

This ordering is very natural in Korean, even though English word order may feel different.

Yes, Korean word order is somewhat flexible, as long as the particles make the roles clear.

For example, these are also possible:

• 자원봉사자를 행사 전에 더 모집해요.
• 자원봉사자를 더 행사 전에 모집해요.

However, 행사 전에 자원봉사자를 더 모집해요 is the most natural and straightforward version for many contexts.

Even though Korean allows some movement, the verb usually stays at the end.

모집해요 is in the 해요-style, which is polite but not extremely formal.

It is appropriate in many everyday situations, such as:

• normal conversation
• workplace conversation
• announcements with a friendly tone

If you wanted a more formal style, you could say:

• 행사 전에 자원봉사자를 더 모집합니다.

So:

• 모집해요 = polite, conversational
• 모집합니다 = more formal

Although it is written 모집해요, it is pronounced more like 모지패요.

This happens because the final ㅂ in 모집 meets the ㅎ in 해요, and the sound changes in pronunciation.

So:

• written: 모집해요
• pronounced: 모지패요

This kind of sound change is very common in Korean, so it is good to get used to the fact that spelling and pronunciation do not always match exactly.

Both are related, but they are used a little differently.

• 행사 전 = before the event / pre-event
• 행사 전에 = before the event, used as an adverbial phrase in a sentence

In this sentence, 전에 works naturally to mean before the event in the sense of at a time before the event.

For example:

• 행사 전 준비 = pre-event preparation
• 행사 전에 준비해요 = prepare before the event

So 전에 is the natural form here because it is describing when the action happens.

Not exactly. 모집하다 specifically has the sense of recruiting, gathering, or calling for participants/applicants.

It is more organized and intentional than just looking for someone.

So 자원봉사자를 더 모집해요 sounds like:

• officially recruiting more volunteers
• trying to gather more volunteers for the event

If you just wanted to say we’re looking for volunteers, other expressions might be used depending on the nuance. 모집하다 is especially common for organized recruitment.