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: 가방이 예뻐요.
English: “The bag is pretty.” (What is pretty? The bag.) - Korean: 날씨가 좋아요.
English: “The weather is good.” (What is good? The weather.) - Korean: 친구가 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: 저는 학생이에요.
English: “As for me, I am a student.” (I am the topic.) - Korean: 이 사과는 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?”
Answer: “친구가 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.
Answer: “친구는 지금 와요.” (As for my friend, he is coming now.) – The friend is already the topic.
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 밥을 먹어요.
English: “I eat rice.” (Topic: I. Object: rice. Verb: eat.) - Korean: 친구가 영화를 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 에 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 집에 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 학교에 가요.
English: “I am going to school.”
Function 3: Time (at, on)
Used to mark a specific time or day.
- Korean: 3시에 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 에. 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:
English: “I am at home.” (Static verb “to be”)
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.
-
Korean: 저는 식당에서 밥을 먹어요.
English: I eat rice at the restaurant. -
Korean: 민수는 어제 공원에서 친구를 만났어요.
English: Minsu met a friend at the park yesterday. -
Korean: 책이 책상에 있어요.
English: The book is on the desk. -
Korean: 언니는 카페에서 커피를 마셔요.
English: My older sister drinks coffee at the cafe. -
Korean: 학생이 도서관에 가요.
English: The student is going to the library. -
Korean: 저는 사과를 좋아해요.
English: I like apples. -
Korean: 날씨가 좋아요. 하지만 바람은 많이 불어요.
English: The weather is good. But the wind (topic/contrast) blows a lot. -
Korean: 저는 주말에 영화를 볼 거예요.
English: I will watch a movie on the weekend. -
Korean: 동생이 백화점에서 빵을 샀어요.
English: My younger sibling bought bread at the department store. -
Korean: 공원에 사람이 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)
- 에: 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!
- Present: 저는 밥을 먹어요. (I eat rice.)
Learn Present Tense -아요/어요 - Past: 저는 밥을 먹었어요. (I ate rice.)
Learn Past Tense -았/었어요 - Future: 저는 밥을 먹을 거예요. (I will eat rice.)
Learn Future Tense -(으)ㄹ 거예요

