LEARN KOREAN (한국어) [GRAMMAR] #1

있다: TO BE AT A LOCATION

있다 can also be used to indicate that something/someone is "at a location." You learned about the particle ~에 in Korean. You learned that this particle is used to indicate the place and/or time of something in a sentence. Therefore, ~에 is often used in sentences with 있다 to indicate the location of something/someone.
For example: I am at school

If we wanted to write this sentence with Korean structure and particles, we would write:

나는 학교에 있다 - I am at school

We can also use position words to indicate specifically where someone/something is with respect to another noun. The most common position words are:

안 - inside
위 - on too
밑 - below
옆 - beside
뒤 - behind
앞 - in front

These words are placed after a noun to indicate where an object is with respect to that noun. The particle ~에 is then attached directly to the position words. For example:

학교 앞에 - in front of the school
사람 뒤 - behind the person
집 옆에 - beside the house

These constructions can now act as the location in a sentence:

나는 학교 앞에 있다 - I am in front of the school

Let's make some sentences:
나는 은행 안에 있다 - I am inside the bank
고양이는 의자 밑에 있다 - The cat is under the chair
식당은 은행 옆에 있다 - The restaurant is next the bank

You have learned that ~이/가 can be attached to nouns in sentences to indicate the object that a person "has." ~이/가 can also be used to indicate the subject of a sentence, similar to ~는/은.