Master 8 Core Korean Particles: 은/는, 이/가, 을/를, 에/에서 

 July 20, 2025

By  Dr. Satish Satyarthi

Mastering 8 Core Korean Particles: 은/는, 이/가, 을/를, 에/에서

Welcome to one of the most important lessons in your Korean journey! Today, we are going to master the 8 basic particles that form the skeleton of almost every Korean sentence.

Particles are “markers” that attach to nouns to show what “job” that noun does in the sentence. Is it the subject (who/what)? The object? The location? Particles tell us!

We will start with simple sentences and build our way up to a complete, complex sentence. Let’s begin!

1. The “Who” or “What”: Subject Particles 이/가

This is the most basic particle. It marks the subject of the sentence—the person or thing that is doing an action or being described.

Rule: Consonant + 이, Vowel + 가

  • If the noun ends in a consonant, add -이.

    Example: 가방 (bag) → 가방이
  • If the noun ends in a vowel, add -가.

    Example: 날씨 (weather) → 날씨가

Simple Sentences:

We use 이/가 with an adjective or verb to make a complete thought. The verb/adjective ending here is the -아요/어요 (present tense).

  • Korean: 가방 예뻐요.
    English: “The bag is pretty.” (What is pretty? The bag.)
  • Korean: 날씨 좋아요.
    English: “The weather is good.” (What is good? The weather.)
  • Korean: 친구 와요.
    English: “A friend is coming.” (Who is coming? A friend.)

2. The “Topic”: Topic Particles 은/는

This is the *other* particle that can mark the “main character” of a sentence. Instead of just identifying the subject, 은/는 sets the topic. It’s like saying, “As for…” or “Speaking of…”

Rule: Consonant + 은, Vowel + 는

  • If the noun ends in a consonant, add -은.

    Example: 가방 (bag) → 가방은
  • If the noun ends in a vowel, add -는.

    Example: 저 (I) → 저는

Simple Sentences:

This is most common for introductions or stating a general fact.

  • Korean: 학생이에요.
    English: “As for me, I am a student.” (I am the topic.)
  • Korean: 이 사과 맛있어요.
    English: “This apple (speaking of this apple), it is delicious.”

3. The Big Question: 은/는 vs. 이/가

This is the biggest challenge for beginners. Here is the simple difference:

이/가: The Subject (New Info / Identifier)

Use 이/가 to identify *who/what* did something or to introduce new information. It answers the question “Who?” or “What?”

Question: “Who is coming?”
Answer: “친구 와요.” (A friend is coming.) – We are identifying *who*.

은/는: The Topic (Known Info / “As for…”)

Use 은/는 to talk *about* something that is already known. It also has a strong nuance of contrast.

Question: “What about your friend?”
Answer: “친구 지금 와요.” (As for my friend, he is coming now.) – The friend is already the topic.
Contrast: “이것 좋아요. 하지만 저것 나빠요.”
English:This one is good. But that one is bad.”

4. The “Action-Receiver”: Object Particles 을/를

Now that we have a subject/topic, what is it *doing*? If the verb is an action (like “eat”, “see”, “buy”), it needs an object. The particle 을/를 marks this object.

Rule: Consonant + 을, Vowel + 를

  • If the noun ends in a consonant, add -을.

    Example: 밥 (rice) → 밥을
  • If the noun ends in a vowel, add -를.

    Example: 영화 (movie) → 영화를

Building the Sentence:

Let’s add an object to our sentences.

  • Korean: 저는 밥 먹어요.
    English: “I eat rice.” (Topic: I. Object: rice. Verb: eat.)
  • Korean: 친구가 영화 봐요.
    English: “My friend watches a movie.” (Subject: My friend. Object: movie. Verb: watches.)

5. The Location (Static, Time, Destination): Particle 에

Great! We know *who* is doing *what*. Now, *where* or *when*? The particle has three main jobs.

Function 1: Static Location (at, in, on)

Used with verbs like 있어요 (to be at), 없어요 (to not be at), and 살아요 (to live).

  • Korean: 저는 집 있어요.
    English: “I am at home.”

Function 2: Destination (to)

Used with verbs of motion, like 가요 (to go) and 와요 (to come).

  • Korean: 저는 학교 가요.
    English: “I am going to school.”

Function 3: Time (at, on)

Used to mark a specific time or day.

  • Korean: 3시 만나요.
    English: “Let’s meet at 3 o’clock.”

6. The Location (Active): Particle 에서

This is the *other* location particle. It is often confused with . The rule is simple:

Use 에서 to mark the location where an action takes place. If the verb is an action (eat, study, work, meet), you use 에서.

The Crucial Difference: 에 vs. 에서

Compare these two sentences:

Korean: “저는 집 있어요.”
English: “I am at home.” (Static verb “to be”)
Korean: “저는 집에서 일해요.”
English: “I work at home.” (Action verb “to work”)

Simple Sentences:

  • Korean: 식당에서 밥을 먹어요.
    English: “I eat rice at the restaurant.” (The action “eat” happens *at* the restaurant.)
  • Korean: 도서관에서 공부해요.
    English: “I study at the library.” (The action “study” happens *at* the library.)

7. Putting It All Together

Now we have all the pieces to build our final, complete sentences. Let’s look at more examples that combine all these particles. The particles are bolded for you.

  1. Korean: 식당에서 먹어요.
    English: I eat rice at the restaurant.
  2. Korean: 민수 어제 공원에서 친구 만났어요.
    English: Minsu met a friend at the park yesterday.
  3. Korean: 책상 있어요.
    English: The book is on the desk.
  4. Korean: 언니 카페에서 커피 마셔요.
    English: My older sister drinks coffee at the cafe.
  5. Korean: 학생 도서관 가요.
    English: The student is going to the library.
  6. Korean: 사과 좋아해요.
    English: I like apples.
  7. Korean: 날씨 좋아요. 하지만 바람 많이 불어요.
    English: The weather is good. But the wind (topic/contrast) blows a lot.
  8. Korean: 주말 영화 볼 거예요.
    English: I will watch a movie on the weekend.
  9. Korean: 동생 백화점에서 샀어요.
    English: My younger sibling bought bread at the department store.
  10. Korean: 공원 사람 없어요.
    English: There are no people in the park.

8. Summary & Next Steps

Here is a quick-reference chart for the particles you learned:

  • 이/가: Subject. (Consonant/Vowel)
  • 은/는: Topic / Contrast. (Consonant/Vowel)
  • 을/를: Object. (Consonant/Vowel)
  • : Static Location (at/in), Destination (to), Time (at/on).
  • 에서: Active Location (where an action happens).

A Note on Tenses

Notice that the particles never change, even if the verb tense changes. You just need to learn how to conjugate the verb at the end of the sentence!

Dr. Satish Satyarthi


Dr. Satish is the founder of LKI School of Korean Language. He got his Masters degree in Korean Language Education from Seoul National University, South Korea under GKS scholarship. He did his M.Phil. and PhD in Korean Language from Jawaharlal Nehru University, Delhi. He also taught at Centre for Korean Studies, JNU for 2 years. He has a passion for education and technology. He has been involved in Korean language education and research for more than 10 years and has trained thousands of Korean language learners across the globe both online and in physical classrooms.

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