The Two Korean 'To Be' Verbs
Unlike English which has one 'to be' verb, Korean has two main verbs that translate to 'to be':
- 이다 - for identity/definition (equals)
- 있다 - for existence/location (exists)
이다 - "To Be" (Identity)
이다 tells us WHAT something IS - its identity, name, or definition.
Structure:
Noun + 이다
Conjugations:
| Tense | After consonant | After vowel |
|---|---|---|
| Present (formal) | 입니다 | 입니다 |
| Present (polite) | 이에요 | 예요 |
| Present (casual) | 이야 | 야 |
| Past | 이었어요 | 였어요 |
Examples:
저는 학생이에요.
I am a student.
이것은 책이에요.
This is a book.
그분은 선생님이세요.
He/She is a teacher. - honorific
오늘은 월요일이에요.
Today is Monday.
있다 - "To Be" (Existence/Location)
있다 tells us WHERE something IS or that something EXISTS.
Structure:
Location에 + Noun이/가 + 있다
Conjugations:
| Tense | Form |
|---|---|
| Present (formal) | 있습니다 |
| Present (polite) | 있어요 |
| Present (casual) | 있어 |
| Past | 있었어요 |
Examples:
책이 책상 위에 있어요.
The book is on the desk.
카페에 친구가 있어요.
My friend is at the cafe.
시간이 있어요?
Do you have time?
돈이 없어요.
I don't have money.
없다 is the negative
Key Differences
| 이다 | 있다 |
|---|---|
| Identifies WHAT | Shows WHERE/EXISTS |
| X = Y | X exists / X is at Y |
| No location particle | Uses 에 for location |
| 학생이에요 (am a student) | 학교에 있어요 (am at school) |
Common Mistakes
Mistake 1: Using 있다 for identity
저는 학생 있어요.
저는 학생이에요.
I am a student.
Mistake 2: Using 이다 for location
친구는 집이에요.
친구는 집에 있어요.
My friend is at home.
Mistake 3: Confusing 있다 (to have) with 이다
저는 차이에요.
I am a car? ❌
저는 차가 있어요.
I have a car. ✅
Special Cases
Location + Existence
서울에 있어요.
I am in Seoul.
Location
Identity Statement
서울은 한국의 수도예요.
Seoul is Korea's capital.
Definition
Having Something
시간이 있어요.
I have time.
Existence/possession
동생이 있어요.
I have a younger sibling.
Existence
Practice Exercise
Fill in with 이다 or 있다:
- 1저는 미국 사람___. (이에요) - identity
- 2고양이가 방에 ___. (있어요) - location
- 3오늘은 금요일___. (이에요) - identity
- 4질문이 ___? (있어요) - existence (Do you have a question?)
- 5이것은 제 가방___. (이에요) - identity
Summary
- 이다 = What something IS (identity, equals)
- 있다 = Where something IS / Something EXISTS
- When in doubt: If you can use "equals" or "is called", use 이다
- If talking about location or possession, use 있다