The most effective Korean grammar textbook for English-speaking learners,
'Korean Grammar in Use' (English version)_Complete edition for beginner, intermediate, and advanced levels!

This is a grammar master textbook that appears in advanced (level 5-6) textbooks taught at Korean universities and academies.
It summarizes the differences in grammar that are similar in meaning, usage, and form at a glance, and includes TOPIK-type practice problems to help you prepare for the Advanced level of the Test of Proficiency in Korean (TOPIK).
This is a useful textbook for both students and teachers, as it provides practical conversations using grammar that can be practiced in a variety of situations, and can be used for systematic Korean grammar classes.
Additionally, you can easily listen to conversations and examples anytime, anywhere through QR codes.