jimeul samulhame bogwanhaeyo.

짐 usually means baggage, luggage, belongings, or things you’re carrying.

In this sentence, it most naturally means luggage or your stuff. It is a very common word, and it does not have to mean only a suitcase. It can also refer more generally to your bags or belongings.

Examples:

• 짐이 많아요. = I have a lot of baggage / I have a lot of stuff.
• 짐을 내려놓아요. = Put down your luggage/stuff.

Because 짐 ends in a consonant, it takes the object particle 을.

The object particle is:

• -을 after a consonant
• -를 after a vowel

So:

• 짐 → 짐을
• 가방 → 가방을
• 우유 → 우유를

In this sentence, 짐을 marks 짐 as the thing being stored.

Here, 에 marks the location/destination where something is placed or stored.

So 사물함에 means:

• in the locker
• into the locker
• at the locker, depending on context

In this sentence, it tells you where the luggage is being stored.

A simple way to read the structure is:

• 짐을 = the luggage
• 사물함에 = in the locker
• 보관해요 = store/keep

This is a very common question.

• 에 is often used for the place something exists in, goes to, or is placed in
• 에서 is often used for the place where an action happens

With 보관하다 in this kind of sentence, Korean usually focuses on the place where the item is kept, so 에 is natural.

Compare:

• 짐을 사물함에 보관해요. = I store the luggage in a locker.
• 도서관에서 공부해요. = I study at the library.

In the second sentence, studying happens at the library, so 에서 is used. In your sentence, the locker is more like the target location where the luggage ends up.

The dictionary form is 보관하다, which means to store, to keep, or to hold for safekeeping.

It is a 하다 verb:

• 보관하다 = dictionary form
• 보관해요 = polite present-style form

This verb often has a slightly more formal or practical feeling than a basic verb like 놓다 (to put/place) or 두다 (to leave/keep).

So 보관하다 suggests storing something properly or safely, not just putting it somewhere.

Because 하다 verbs change like this in the polite -아요/어요 style:

• 하다 → 해요

So:

• 보관하다 → 보관해요
• 공부하다 → 공부해요
• 정리하다 → 정리해요

This is one of the most common conjugation patterns in Korean.

Grammatically, 보관해요 is in the present polite style, but in Korean this form can cover several meanings depending on context:

• I store it
• I am storing it
• I store luggage there (habitually)
• I will store it sometimes, if the situation makes that clear

So Korean often relies on context more than English does.

If you wanted to make the past explicit:

• 짐을 사물함에 보관했어요. = I stored the luggage in the locker.

Korean often omits the subject when it is already understood from context.

So 짐을 사물함에 보관해요 could mean:

• I store the luggage in the locker
• We store the luggage in the locker
• (Someone) stores the luggage in the locker

Usually, the situation tells you who the subject is.

This is very normal in Korean. English usually needs a subject, but Korean often does not.

Yes, but Korean word order is also somewhat flexible.

The basic pattern here is:

• 짐을 = object
• 사물함에 = location
• 보관해요 = verb

So the overall structure is: Object + Location + Verb

Because Korean verbs usually come at the end, 보관해요 must stay near the end.

You may also hear slight variations like:

• 사물함에 짐을 보관해요.

This still means the same thing. The particles 을 and 에 show the roles of the words, so Korean allows some movement for emphasis.

Yes, but the nuance changes.

Some related verbs are:

• 놓아요 = put/place
• 두어요 / 둬요 = leave/keep
• 넣어요 = put in
• 보관해요 = store/keep safely

For example:

• 짐을 사물함에 넣어요. = I put the luggage into the locker.
• 짐을 사물함에 둬요. = I leave the luggage in the locker.
• 짐을 사물함에 보관해요. = I store the luggage in the locker.

보관해요 sounds a bit more like storing than simply putting.

Yes. 사물함 is the standard Korean word for a locker.

It is made up of:

• 사물 = things/articles
• 함 = box/case/container

So it literally has the sense of a box for things, which became the normal word for locker.

You will commonly see it in places like:

• schools
• gyms
• train stations
• swimming pools

Example:

• 사물함 열쇠 = locker key
• 사물함 번호 = locker number

The sentence you have is in the polite everyday style: 보관해요.

Other levels:

• 짐을 사물함에 보관합니다. = more formal
• 짐을 사물함에 보관해. = casual/plain

So the same verb changes depending on the speech level:

• 보관합니다 = formal polite
• 보관해요 = standard polite
• 보관해 = casual

This is about politeness and style, not a change in basic meaning.