IndoLingua C1 Indonesian Course Book — Japanese Edition (Digital eBook + Audio)

About this C1 book for Japanese speakers

This is the CEFR C1 (advanced) level of the IndoLingua method, written for Japanese speakers. At C1 the goal is to use Indonesian fluently and flexibly for academic and professional purposes. Every explanation, translation and example is given in Japanese, so you never have to learn Indonesian through a third language.

What you will learn at C1

The C1 book focuses on nuanced idioms, literary and academic style, argumentation, and subtle register shifts. By the end you will be able to express yourself precisely on complex subjects and understand demanding written and spoken material.

• CEFR C1 syllabus with clear, level-specific learning outcomes
• Vocabulary lists with Japanese translations and pronunciation
• Grammar for the C1 level explained in Japanese with example sentences
• Dialogues set in real Indonesian contexts (Bali, Jakarta, Yogyakarta)
• End-of-chapter exercises with answer keys
• Native audio recordings for every dialogue and vocabulary item

Where C1 fits in the A1–C2 path

IndoLingua's Japanese collection runs from A1 (absolute beginner) to C2 (mastery). C1 is the advanced stage; once you can express yourself precisely on complex subjects and understand demanding written and spoken material, you are ready for the next level up.

Why learn Indonesian?

Indonesian is spoken by 270 million people and is the official language of Indonesia. FSI ranks it as Category II (around 900 hours to professional fluency for English speakers) — no verb conjugations, no noun genders, no tones, Latin alphabet.