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. Beginner -be-ㅂ니다-예요-이에요Consumer electronics 【-이에요/예요】What are the most frequently used endings in daily life? Practice -be-ㅂ니까-ㅂ니다greetingjobself introduction 【Practice①】Let’s solve the exercises using ‘-입니다/입니까’. Beginner -be-ㅂ니까-ㅂ니다greetingjobself introduction 【-입니다/입니까】Let’s learn basic grammar for self introduction.