# どうして: why or how come > Learn how to use どうして, a JLPT N5 Japanese grammar point meaning why or how come, with structure, nuance, examples, mistakes, and comparisons. JLPT level: N5 · Updated: 2026-05-17 · Canonical: https://hane-app.com/blog/n5-doushite/ **どうして** means **why or how come**. It is a **JLPT N5** Japanese grammar pattern used to ask the reason for something. This grammar point appears often in beginner conversations, textbooks, and JLPT-style reading questions. If you want to ask reasons naturally in Japanese conversation, **どうして** is a useful pattern to learn early because it connects directly to everyday communication. ## What does どうして mean? Use **どうして** when you want to ask for a reason or cause. Natural translations include: - why - how come - for what reason The exact English translation changes with context. The important point is to understand what job the pattern is doing in the sentence, not to memorize only one English phrase. ## How to form どうして
どうして + sentence + か
In casual speech, you can also end with a rising intonation instead of か. Examples of the pattern: - どうしてですか - どうして行いきませんか - どうしてそう思おもいますか Pay attention to the form that comes before the grammar point. Many beginner mistakes happen because the learner understands the meaning but attaches the pattern to the wrong word form. ## When is どうして used? Use **どうして** in situations like: - asking reasons - checking someone’s thinking - reacting to surprising information Tone and register: - neutral; can sound direct depending on intonation - Common in daily speech, textbook examples, and beginner JLPT questions ## どうして example sentences
どうして日本語にほんごを勉強べんきょうしていますか。
Why are you studying Japanese?
polite
どうして来こなかったんですか。
Why didn’t you come?
polite
どうしてそう思おもいますか。
Why do you think so?
polite
どうして泣ないているの？
Why are you crying?
casual
どうしてこの店みせが好すきですか。
Why do you like this shop?
polite
Read the Japanese sentence first, then check whether the English translation matches the feeling of the whole sentence. This helps you avoid translating each piece too literally. ## Nuance of どうして The key nuance is **a direct request for a reason**. This matters because learners often know the dictionary meaning but miss the speaker's intention. In real Japanese, grammar points show attitude, politeness, contrast, certainty, desire, or context. For **どうして**, focus on how the pattern changes the role of the sentence. For example: - In conversation, it can sound curious, but can sound challenging if said sharply. - Compared with **なぜ**, it feels more conversational.
! In conversation, どうして can sound curious, but it can sound challenging if said sharply.
## どうして vs なぜ
どうして
common in everyday questions
casual or polite speech
どうして遅おくれましたか。
Why were you late?
vs
なぜ
slightly more formal or written
essays, explanations, and news
なぜ遅おくれましたか。
Why were you late?
If you are unsure which one to use, ask what the sentence is trying to do: define something, ask something, show a reason, mark a subject, describe a desire, or connect ideas. ## Common mistakes with どうして
❌ Using どうして when you mean “how” as a method
✅ Use どうやって to ask about method
❌ Sounding accusatory by using a harsh tone
✅ Keep your intonation neutral and curious
❌ Forgetting か in polite questions
✅ End polite questions with か, e.g. どうしてですか
A good study habit is to make one simple original sentence, then change only one part of it. That makes the function of the grammar point easier to see. ## Is どうして on the JLPT?
N5

Yes. どうして is commonly taught as JLPT N5 grammar.

  • Recognize it in reading and listening
  • Understand its nuance in context
  • Use it in simple original sentences

For test preparation, do not only memorize the English gloss. Practice identifying the word before and after the grammar point, because JLPT questions often test structure and context together.

## Practice questions for どうして
1 Ask why someone studies Japanese. production
2 Ask why a friend is busy. production
3 Ask why someone likes a city. production
Keep the sentences short at first. Once the form feels natural, add time words, places, reasons, or contrast to make the sentence more realistic. ## Learning path for どうして Use **どうして** as part of your **JLPT N5** question, explanation, and confirmation grammar toolkit. Find the question word, question particle, or explanatory ending first. These patterns tell the listener whether you are asking, confirming, guessing, or giving background information.
1 Make one short sentence with どうして.
2 Compare it with だろう to see how a question ending changes the feeling.
3 Add ね or はどうですか to see how the basic meaning changes.
4 Write one basic example, one with a different subject or time word, and one that contrasts it with a related pattern below.
## Related grammar to review next - [だろう](/blog/n5-darou/) — builds control over questions, confirmation, guessing, and explanation endings. - [ね](/blog/n5-ne/) — builds control over questions, confirmation, guessing, and explanation endings. - [はどうですか](/blog/n5-wa-dou-desu-ka/) — builds control over questions, confirmation, guessing, and explanation endings. - [か](/blog/n5-ka-question-particle/) — builds control over questions, confirmation, guessing, and explanation endings. Browse more lessons here: - [All grammar lessons](/blog/) - [JLPT N5 grammar lessons](/blog/n5/) ## Learn どうして with Hane If you want to review **どうして** together with the related patterns above, Hane helps you practice Japanese in short, focused sessions. Browse more lessons here: - [All grammar lessons](/blog/) - [JLPT N5 grammar lessons](/blog/n5/)