Korean Particles - Topic Subject Object

In this lesson, you will learn about the Korean particles 을/를, 은/는, and 이/가. English, and many other languages, do not have these ‘particles’ and so the concept of Korean particles may be a little difficult to understand at first.

However, learning Korean particles is essential if you are going to understand Korean sentences and be understood when you make your own sentences. So, what are Korean particles?

Korean particles are suffixes that typically follow Korean nouns or pronouns to indicate a particular function or grammatical relation of that noun or pronoun.

Confused? Don’t worry. Below we will explain in detail what Korean particles are and provide plenty of examples to help you learn how to use Korean particles in Korean sentences.

There are many particles in Korean. In this lesson, you will learn the object marking particle (을/를), the topic marking particle (은/는), and the subject marking particle (이/가).

Korean Particles

Korean Object Marking Particles – 을/를

Korean Object Marking Particle

An object marking particle is used to indicate the object in a sentence. An object in a sentence is the noun that is being affected by a verb.

For example, in the sentence ‘I like apples.’, the object of the sentence is ‘apple(s)’. ‘Apple(s)’ is the object because it is the thing that is being affected by the verb ‘like’ (i.e. the apples are being liked).

In English, there is nothing which ‘marks’ the object, but in Korean, or is used to mark the object in a sentence.

So, the sentence ‘I like apples.’ in Korean is 사과를 좋아해요.

  • 사과 = apple
  • 사과 = apple + object marking particle
  • 좋아하다 = to like
  • 좋아해요 = like present tense
  • 사과 좋아해요. = (I) like apples.

을 is attached to nouns which end in a consonant, and 를 is attached to nouns which end in a vowel. In the above example, 사과 ends in a vowel (ㅏ) so 를 was attached. Let’s look at some more examples with the object marking particle /.

  • 읽어요 = read a book
  • 바나나 먹어요 = eat a banana
  • 마셔요 = drink tea
  • 케이크 좋아해요. = (I) like cake.

Korean Topic Marking Particles – 은/는

Korean Topic Marking Particle

Adding a topic marking particle to a noun lets the listener know that THAT NOUN is the topic of what you are talking about. For example, in the sentence, ‘Today is Monday.’, the topic is ‘today’.

Again, in English, there is nothing that marks the topic in a sentence, but in Korean, the topic is marked with 은 or 는.

So, in the sentence ‘Today is Monday.’, the topic, ‘today’, must be marked by the topic marking particle.

  • 오늘 = today
  • 오늘 = today + topic marking particle 은
  • 오늘 월요일이에요. = Today is Monday.

은 is used when the preceding word ends in a consonant, and 는 is used when the word ends in a vowel. In the above example, 은 is used because 오늘 ends in a consonant (ㄹ).

Let’s look at some more examples with the topic marking particle 은/는.

  • 사과를 좋아해요. = I like apples.
  • 이 케이크 맛있어요. = This cake is delicious.
  • 저 사람 누구예요? = Who is that person?
  • 내일 화요일이에요. = Tomorrow is Tuesday.

Korean Subject Marking Particles – 이/가

Korean Subject Marking Particle

The Korean subject marking particle 이/가 is used to mark the subject in a sentence. If you’re not sure what a ‘subject’ is, a subject of a sentence is the person or thing that is doing an action (verbs) or being described (adjectives).

WITH VERBS

In the sentence ‘Sumin likes apples.’, ‘Sumin’ is the subject, ‘like’ is the verb, and apple(s) is the object. In this example, ‘Sumin’ is the subject because ‘Sumin’ is the person that is doing the verb (like).

So, to say this sentence in Korean, we must mark ‘Sumin’ (수민) with the subject marking particle:

  • 수민 사과를 좋아해요.

WITH ADJECTIVES

In the sentence, ‘The weather is cold.’, ‘the weather’ is the subject and ‘cold’ is the adjective. ‘The weather’ is the subject because it is the thing being described by the adjective (cold).

So, to say this sentence in Korean, we must mark ‘the weather’ with the subject marking particle:

  • 날씨 추워요.

이 is used when the preceding word ends in a consonant, and 가 is used when the word ends in a vowel. In the first example above, 이 was used because the name 수민 ends in a consonant (ㄴ). In the second example, 가 was used because 날씨 ends in a vowel (ㅣ)

Let’s look at some more examples with the subject marking particle 이/가.

  • 은정씨 김치를 좋아해요. = Eunjeong likes kimchi.
  • 이 바나나 맛있어요. = This banana is delicious.
  • 그 가방 싸요. = That bag is cheap.
  • 없어요. = There is no water.

Korean Particles Practice Exercise

To review what you have learned in this lesson, check out this Korean particles practice exercise. This practice exercise is a quiz. Each question asks you to choose the correct Korean particle to complete the sentence. Enjoy! 🙂


Don’t worry if you still find these Korean particles a little difficult to understand. Overtime, as you learn more and more Korean, and you see these Korean particles in context, you will be able to understand them better.

For now, just remember that 을/를 marks the object, 은/는 marks the topic, and 이/가 marks the subject.

In the next lesson, we will teach you how to make Korean sentences using all the things you have learned in previous lessons.