Let's learn how to use Korean grammar "N + 이/가 아니예요" with conjugation rules and some simple real-life examples.
N + 이/가 아니예요 (“is not …”)
USE:
이/가 아니예요 is used to negate a noun.
It means “is not …” or “it’s not …” in English.
아니예요 is the polite negative form of 이다 (to be).
이/가 is the subject marker:
Use 이 after a noun ending in a consonant.
Use 가 after a noun ending in a vowel.
CONJUGATION RULE:
N + 이/가 아니예요 grammar is used with nouns. The first step of ‘N + 이/가 아니예요' conjugation is to attach 이/가 to the noun based on the batchim ending, Then you add 아니예요 to the noun.
EXAMPLE SENTENCES:
- 저는 학생이 아니예요.
→ I am not a student. - 이 사람은 의사가 아니예요.
→ This person is not a doctor. - 저 사람은 선생님이 아니예요.
→ That person is not a teacher. - 그건 제 책이 아니예요.
→ That is not my book.

