Word~할 때~hal ttaeMeaningwhenPart of speechpostpositionPronunciationCourseHardcore KoreanLessonLesson 21Usages of ~hal ttae조리할 때 필요한 재료를 미리 준비해 두세요.jorihal ttae piryohan jaeryoreul miri junbihae duseyo.Prepare the ingredients you need for cooking in advance.