IndoLingua B2 Indonesian Course Book — Japanese Edition (Digital eBook + Audio)
About this B2 book for Japanese speakers
This is the CEFR B2 (upper-intermediate) level of the IndoLingua method, written for Japanese speakers. At B2 the goal is to reach professional fluency and discuss abstract topics. 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 B2
The B2 book focuses on formal vs informal registers, business Indonesian, news and media language, and complex sentence structures. By the end you will be able to participate in detailed discussions, follow Indonesian news and write structured texts.
- CEFR B2 syllabus with clear, level-specific learning outcomes
- Vocabulary lists with Japanese translations and pronunciation
- Grammar for the B2 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
Learning Indonesian as a Japanese speaker
What you already have for free
Japanese speakers arrive with three habits that transfer. The five Japanese vowels are almost exactly the Indonesian five, so pronunciation is unusually easy. Nouns are not marked for plural in either language. And Japanese counters (本, 匹, 人) map directly onto Indonesian classifiers buah, ekor and orang — the concept needs no explaining, only new words.
What you have to unlearn
The order has to be inverted. Indonesian is subject-verb-object where Japanese is subject-object-verb, so the verb moves to the middle of every sentence you build. There are no particles like は, が or を: position alone marks the role of a word, and adding a marker where Indonesian expects none is the most visible learner error.
The mistakes Japanese speakers actually make
Politeness does not work the same way. Indonesian has registers, but they live in the choice of pronoun and title (Anda, kamu, Bapak, Ibu) rather than in verb forms, so there is no です/ます layer to switch on. Japanese speakers also tend to leave the subject unspoken, which Japanese allows and Indonesian generally does not.
Pronunciation: what to drill first
The main obstacle is consonant clusters: Japanese inserts a vowel between consonants, so praktik, struktur and transportasi need deliberate practice. Indonesian r is tapped rather than the Japanese ら-row flap, and l and r are distinct phonemes — lupa (forget) and rupa (appearance) are different words.
Words you already know
Words borrowed into both languages are recognisable: televisi (テレビ), komputer (コンピューター), kamera (カメラ), bis (バス), tiket (チケット), roti and sepatu.
This is why the Japanese edition exists as its own book rather than a translated appendix: the B2 explanations are written against Japanese habits, and the vocabulary lists give Japanese equivalents rather than English ones.
The grammar taught at B2
B2 is about register. Indonesian splits sharply between bahasa baku, the standard written form used in news, contracts and government, and the colloquial spoken language of Jakarta, where tidak becomes nggak and affixes are routinely dropped. You learn to read the first and speak the second, plus the passive-heavy sentence structures that dominate journalism and formal writing.
A sentence you can read at B2: Rapat tersebut akan diadakan minggu depan setelah seluruh dokumen diserahkan kepada pihak berwenang. — "The meeting will be held next week once all documents have been submitted to the authorities." Two passives and a formal tersebut, exactly as an Indonesian newspaper would write it.
What CEFR B2 certifies
CEFR B2 means you can understand the main ideas of complex text on both concrete and abstract topics, interact with a degree of fluency and spontaneity that makes conversation with native speakers comfortable, and write clear detailed text on a wide range of subjects.
Where B2 fits in the A1–C2 path
IndoLingua's Japanese collection runs from A1 (absolute beginner) to C2 (mastery). B2 is the upper-intermediate stage, reached once you can participate in detailed discussions, follow indonesian news and write structured texts. At C1, precision and idiom replace correctness as the thing you are working on.
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.