Beginner -았/었、the pastirregularity conjugation 【-았/었/였】How to make and express the past tense. Practice -지 않다negative sentencenot안 【Practice⑩】Let’s practice using ‘안、-지 않다’ to make a negative sentences. Beginner -지 않다negative sentencenot안 【안、-지 않다】Expressing “do not” in negative sentences. Practice -ㅂ니까-ㅂ니다 【Practice⑨】Let’s practice using ‘-ㅂ니다/습니다’ to make a polite language. Beginner -ㅂ니까-ㅂ니다the polite 【-ㅂ니다/습니다】Learn the polite language everyone uses, from beginners to experts. Expression numberphone숫자 Difficult to pronounce a phone number? How to make sure you exchange numbers in Korean. Practice -be-아니다negative sentencenot아니에요 【Practice⑧】Let’s practice using ‘-이/가 아니에요’ to make a negative sentence. Beginner -be-아니다negative sentencenot아니에요 【-이/가 아니에요】Master simple negative sentences for immediate use! Practice -be-예요-이에요 【Practice⑦】Let’s practice using ‘-예요/이에요’. Beginner -be-ㅂ니다-예요-이에요Consumer electronics 【-이에요/예요】What are the most frequently used endings in daily life? ≪ 1 … 7 8 9 10 11 ≫