Why Vietnamese Learners Often Pass the JLPT Faster (and Where They Still Struggle)
Vietnamese students often surprise newcomers with how quickly they absorb Japanese vocabulary. It isn’t luck — there is a real linguistic reason. But the same students hit a grammar wall that others don’t. Here is an honest look at both sides.
The Big Advantage: Hán-Việt
A large share of Vietnamese vocabulary comes from Chinese roots — the Hán-Việt (漢越語) layer — and so does Japanese 漢語 (kango, the on’yomi compound words). That means many Japanese words have a Vietnamese cousin that sounds and means almost the same.
Once a Vietnamese learner notices this pattern, kanji compounds stop feeling random. The on’yomi often “rhymes” with a word they have known since childhood, so N5–N3 vocabulary builds fast.
Cognate Examples
| Japanese (kango) | Hán-Việt | Meaning |
|---|---|---|
| 注意（ちゅうい） | chú ý | attention / caution |
| 自由（じゆう） | tự do | freedom |
| 安全（あんぜん） | an toàn | safety |
| 準備（じゅんび） | chuẩn bị | preparation |
| 時間（じかん） | thời gian | time |
| 意見（いけん） | ý kiến | opinion |
| 文化（ぶんか） | văn hóa | culture |
| 歴史（れきし） | lịch sử | history |
| 銀行（ぎんこう） | ngân hàng | bank |
| 結婚（けっこん） | kết hôn | marriage |
Where Vietnamese Learners Still Struggle
The advantage is in words — not in grammar. Vietnamese and Japanese are structurally very different, and that is where the same difficulties repeat.
Word order & particles
Vietnamese is SVO and analytic, with no case particles. Japanese is SOV and leans entirely on は・が・を・に・で. Learning which particle to use — and the は/が distinction — takes real effort.
Verb conjugation
Vietnamese verbs don’t conjugate. So ます形 / て形 / plain form / potential are all brand new. I always slow down and teach the verb groups carefully here.
Vowel length & small っ
Vietnamese has its own rich sound system, but Japanese length distinctions (おばさん vs おばあさん, きて vs きって) still need dedicated ear training.
Keigo (敬語)
Vietnamese politeness works largely through pronouns and address terms; Japanese does it through verb forms (尊敬語・謙譲語). The mapping is not one-to-one.
My Advice for Vietnamese Learners
- Lean hard on the Hán-Việt bridge for kanji and vocabulary — it is your superpower. When you meet a new 漢語, ask “what is the Hán-Việt?”
- But spend your study hours on grammar, particles, and conjugation, because that is where points are actually lost. Don’t let easy vocabulary fool you into neglecting grammar.
- Treat listening length and contractions as a separate skill — train your ears a little every day.
Teacher’s Note
Used well, the Hán-Việt advantage can carry you through N5 and N4 quickly — just make sure your grammar keeps pace so N3 doesn’t catch you off guard. The learners I see stall at N3 are almost always the ones who coasted on vocabulary and skipped grammar drills.
Explanations in your language
Nihongo Pass explains grammar and vocabulary in Vietnamese, so you understand why — not just what. Built by a JLPT N1 teacher.
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