Practical Korean Usage Intermediate 3

PKU Intermediate 3 — Practical Korean Usage
Your AI-Powered Guide to Korean Grammar

The bridge from SPEAKING Korean to WRITING it.

This is where intermediate Korean grows up. Pitched at TOPIK II, Level 4, this volume hands you the formal register: the "because" of essays, the connectors that weigh one idea against another, the discourse glue that turns loose sentences into flowing paragraphs. By the final chapter, the 12-line poem that has run through every PKU book comes full circle — and you write the essay that closes it. Volume 7 of the Practical Korean Usage (PKU) series, the third and final intermediate book.

📘 WHAT YOU'LL MASTER
- Summing-up — "it practically amounts to" (-(으)ㄴ/는 셈이다)
- Formal, written-register reason (-(으)므로)
- Contrast for essays — "whereas" (-(으)ㄴ/는 데 반해)
- Purpose & degree — "so that," "to the point of" (-도록)
- The near-miss, condition & ruling-out, careful speculation (-(으)ㄹ 뻔하다, -는 한 / -(으)ㄹ 리가 없다, -(으)ㄹ지도 모르다)
- Natural principle, blame & credit, intention (-기 마련이다 / -는 법이다, 탓에 / 덕분에, -(으)ㄹ 테니까)
- A full guide to discourse connectors (접속부사) — the joints that make writing flow
- PLUS an appendix of four-character idioms (사자성어) & proverbs — a treasury of Korean wisdom.

✨ WHAT MAKES PKU DIFFERENT
🤖 AI Companion — every chapter ends with guided exercises you do WITH an AI tutor: quizzes, writing coaching, even drafting your own short essay. Learning becomes a conversation, not a worksheet.
🎬 K-Drama scenes — each grammar point lives inside a short dramatic scene, so you feel WHEN a Korean speaker would actually reach for it.
✍️ The running sonnet — the 12-line poem threaded through the whole series comes full circle here, and you write its closing essay yourself.
📚 Contrastive pairs — the tricky look-alikes (-(으)므로 vs -아서/어서, -도록 vs -게) are placed side by side, so the difference finally clicks.
🎙️ Pronunciation spotlights, 🌍 K-Culture notes, and 📝 mini-quizzes with full answer keys round out every chapter.

🎯 WHO IT'S FOR
Upper-intermediate learners preparing for TOPIK II writing, anyone moving from conversation to composition, and teachers building essay-writing material.

📚 THE PKU SERIES
Written by Korean-language educator Sungtaek Lee (이성택), PKU teaches grammar the way it is actually used in real life, through the "Snowball Method" — small pieces that build, chapter by chapter, into confident fluency. Created in collaboration with Claude (Anthropic). New to the series? Start anywhere; the six earlier volumes carry you from the basics.

🆓 Completely free. Thank you for learning with us — and may your Korean grow as fluent as your heart desires.