Question Words(疑問詞)
The core interrogatives used to ask for missing information. Japanese word order does NOT invert for questions; the question word simply replaces the unknown noun and the sentence usually ends in か.
Grammar path · 練習
Practice this in the path
A short lesson: the pattern, its sentence anatomy, a quick quiz and a sentence to build.
Structure · 形
[Sentence with Question Word] + か?
Examples · 例文
それは何ですか?
Sore wa nan desu ka?
What is that?
何 (what) is read なん before the t/d/n sounds (like です) and なに elsewhere.
駅へはどう行けばいいですか?
Eki e wa dou ikeba ii desu ka?
How do I get to the station?
どう (how) asks for the manner/route; 〜ばいいですか = "what is good to do / how should I ~".
なぜ彼が泣いているのか?
Naze kare ga naite iru no ka?
Why is he crying?
なぜ (why) vs どうして (why): なぜ is slightly more direct/formal; どうして is everyday use.
Usage notes · 注意
- Core Set: 何 (なに/なん) what, どこ where, いつ when, 誰 (だれ) who, なぜ/どうして why, どう how, どれ/どの which.
- The "Everything" Formula: [Question word] + も + [Negative Verb] creates absolute negation — 誰も (no one), 何も (nothing), どこも (nowhere). Note いつも means "always" (positive) and is the exception.
Commonly confused with
The JLPT rarely asks whether you recognise a pattern — it asks which of several similar patterns fits. These are the ones Question is tested against.
vs[Question word] + でも (positive)
誰でも/何でも with a POSITIVE verb means "anyone/anything". The same words with も + NEGATIVE (誰も/何も …ない) mean "no one/nothing".
vsどうして vs なぜ vs なんで
All mean "why": なぜ is formal/written, どうして is neutral-polite, なんで is casual/spoken.
Study Japanese grammar on LenGaki
Everything on this page, ready to study
- 7,788 JLPT vocabulary words, N5 through N1, with readings and audio (N5 free)
- 2,057 kanji with on'yomi, kun'yomi and stroke-order practice
- 445 grammar points with examples and commonly-confused comparisons
- Full-length N5 and N4 mock exams, timed, with real listening audio (N5 sets 1 and 2 free)

Get the Android app
Your XP, streak and roadmap sync between this website and the app, which adds offline study and home-screen widgets on your phone.
See the app ›