Topic Marker (은/는)

은 and 는 are topic-marking particles, among the most fundamental in Korean. They tell the listener what the sentence is about. Use 은 after a noun ending in a consonant and 는 after a noun ending in a vowel.

The topic marker sets the context for the rest of the sentence. In '저는 학생이에요' (I am a student), 는 marks 저 (I) as the topic. It's like saying 'As for me, I am a student.' This framing function makes 은/는 essential for introducing subjects and making general statements.

One important nuance is that 은/는 can also express contrast. For example, '커피는 좋아해요. 하지만 차는 안 좋아해요.' (I like coffee. But I don't like tea.) Here, 는 contrasts coffee and tea. Understanding the difference between the topic marker 은/는 and the subject marker 이/가 is a key milestone for Korean learners.