Building Foundational English Skills: Advanced Grammar Superpowers Step 1

The Superpower Series precisely identifies grammar points that Korean learners frequently get wrong or find difficult when learning English. It easily explains why such mistakes occur and shows how to correct them, helping learners use English with confidence. Through a step-by-step learning design tailored to learners' levels, from basic to advanced grammar, even learners with no foundation in English can gradually build their skills by following the course.