How to study Japanese by yourself: what actually works, from a teacher who watches it fail独学で日本語を勉強する: どこまで行けて、どこで止まるか
You can study Japanese by yourself by following one structured course, reviewing useful language, and practising both understanding and producing sentences. Start with manageable tasks, use audio from the beginning, and measure what you can do without looking at an answer. When your own checks stop revealing the problem, outside feedback can help you choose the next step.
一人でも、かなり先まで行けます。かな、最初の1000語、文法のほとんど、そしていい耳。独学が止まる場所は、いつも同じです。その場で文を作ること。この記事は、そこまでできるだけ遠くへ行く方法と、かべの見分け方です。
Self-study is 独学 (どくがく). It gives you control over your schedule, materials, and interests, but it also makes you responsible for noticing what is missing. Finishing a video is easy to count; understanding a new question or writing a sentence from memory takes a different kind of check.
This guide offers a beginner-friendly routine, not a deadline for fluency. The timings and exercises below are practical starting suggestions. Adjust them to your available time, accessibility needs, and goals rather than treating them as a scientifically established formula.
The basics
Start with a task you want to perform
Choose something smaller than “learn Japanese”: introduce yourself, order a drink, or describe yesterday. That task helps you decide which words and sentence patterns deserve attention first. If your goal is reading manga, you still need grammar and vocabulary, but your balance of reading and conversation practice may differ from someone preparing to live in Japan.
日本語を独学で勉強しています。 — I am studying Japanese on my own.
Here, で marks the method: through self-study. You do not need to analyse every part perfectly before using the sentence. Learn its meaning, listen to a reliable model when available, and return to its grammar as your course introduces it.
Write one weekly goal that you can demonstrate. “Study introductions” is vague. “Introduce myself using three sentences without reading” gives you an observable result. An imperfect attempt is useful evidence about what to review.
Learn kana while beginning simple Japanese
Begin learning hiragana, then add katakana. Practise recognising characters in short words as well as on a chart. There is no universal two-week deadline: previous experience, study time, and the kind of practice you do all affect the pace. You can start listening and using basic expressions while kana recognition is still developing.
Use romanisation as temporary support if necessary, then gradually remove it from material you know. Learn kanji through words you actually encounter, including their readings in those words. Trying to memorise every reading of a new character at once can make a small task unnecessarily large. See Japanese writing systems for how hiragana, katakana, and kanji work together.
Choose one main course and a small support kit
Your 教材 (きょうざい, learning materials) should provide a sequence, understandable explanations, audio, and some way to check exercises. Keep one main course, a dictionary, and a review system. Add another resource when it solves a specific problem, such as finding easier listening, rather than because starting something new feels productive.
For an example of a structured resource, the Japan Foundation describes Irodori as a course focused on everyday communication, with downloadable materials and audio. Its practical tasks can help you define what to practise. See the official Irodori introduction for the course design and materials.
Grammar, 文法 (ぶんぽう), gives you patterns for combining words. Vocabulary words, 単語 (たんご), give those patterns useful content. Study them together: after learning a pattern for describing a daily action, put a familiar verb into it and make a true sentence about yourself.
毎日、日本語の本を読みます。 — I read a Japanese book every day.
Do not require yourself to finish all beginner grammar before trying this. A small sentence that you understand and can adapt is enough for the first attempt.
Try a repeatable thirty-minute session
The following schedule is a suggested allocation, not a minimum effective dose. If you only have ten minutes, shorten each activity or rotate them across the week. If a weekend session is your only option, use it; a plan that fits your life is more useful than one you repeatedly abandon.
| Activity | Suggested time | A concrete result |
|---|---|---|
| Review familiar material | 5 minutes | Recall a few meanings or sentences before checking |
| Work through your main course | 10 minutes | Understand one small dialogue or grammar point |
| Listen with a transcript | 10 minutes | Recognise one short passage after checking it |
| Speak or write from memory | 5 minutes | Produce two or three personal sentences |
Review is 復習 (ふくしゅう). Attempt an answer before revealing it, then revisit difficult material in a later session. A flashcard system can schedule these returns, but paper cards or a notebook can also work. Keep the workload small enough that reviewing does not crowd out reading, listening, and using the language.
昨日の単語を復習します。 — I will review yesterday's vocabulary words.
Record what you recalled, what you needed to look up, and one item for next time. A short note is enough. The purpose is to guide tomorrow's work, not to turn study into an elaborate tracking project.
Beyond the basics
Turn listening into a task you can check
Choose a short recording with a transcript and language that is mostly accessible. Listen once for the situation. Read the transcript and resolve the words that block understanding. Listen again without reading, then summarise what you understood in English or simple Japanese.
If you still cannot identify any meaningful phrases, choose easier material or a shorter segment. Replaying an incomprehensible recording indefinitely gives you little information about what to fix. On the other hand, missing a few details does not mean that the whole recording is unsuitable.
短い会話を聞きます。 — I will listen to a short conversation.
会話 (かいわ) means conversation. You can study a recorded conversation alone, but participating in one adds turn-taking and responses you did not prepare. Those are useful additional skills when interaction is part of your goal.
Use anime as a focused supplement
Anime can keep you interested and provide memorable scenes, but difficulty and speaking style vary widely. Choose a short exchange you enjoy. Work out who is speaking to whom, what the line means in that scene, and whether its tone fits an ordinary interaction. English subtitles may convey the scene naturally without matching the Japanese word for word.
Study one useful line, replay it, and try a small variation after checking the pattern. You can also watch purely for enjoyment; just keep that separate from the tasks you use to evaluate progress. For a more detailed routine, see the Japanese subtitles method.
Avoid assuming that every dramatic pronoun or command is a safe default with a stranger. Compare the situation with the examples in your course. The guide to polite and casual Japanese explains why the relationship between speakers matters.
Build speaking practice without a partner
You can create useful solo 練習 (れんしゅう, practice). Read a short model aloud, put it away, and say something similar about your own day. Record the attempt if that helps you notice pauses or compare it with audio. If recording makes the task harder to sustain, begin with private spoken repetitions.
今日は発音を練習します。 — I will practise pronunciation today.
発音 (はつおん) means pronunciation. For a short audio segment, listen, pause, and repeat before attempting shadowing, where you speak just behind the recording while it continues. Match a manageable stretch instead of chasing an entire dialogue. Imitating audio practises delivery; answering a new prompt practises choosing your own message. Include both if speaking is your goal.
You can also use timed prompts alone. For example, give yourself a comfortable amount of time to answer “What did you do yesterday?” and repeat the task later. A timer creates time pressure, but it does not reproduce another person's unexpected question or misunderstanding. Treat it as preparation for interaction rather than a complete simulation.
昨日、日本語を勉強しました。 — I studied Japanese yesterday.
明日は短い日記を書きます。 — Tomorrow I will write a short diary entry.
A diary can connect yesterday's actions with tomorrow's plans. Keep sentences within your current range, then expand one detail. If you need a dictionary for every word, simplify the message. You are practising access to language, not trying to write a polished essay every evening.
Diagnose a plateau before changing your routine
A feeling of being stuck does not identify its cause. You may be using harder material, forgetting earlier vocabulary, avoiding a particular skill, or simply overlooking small gains. Compare similar tasks over time: a familiar short passage, an introduction without notes, or a paragraph on an everyday topic.
| What you notice | One possible gap | An experiment for the next week |
|---|---|---|
| Words look familiar but their meanings do not come | Recall needs practice | Try answering before revealing flashcards |
| A transcript is easy but its audio is confusing | Recognising connected speech | Repeat a short transcript-supported listening task |
| You understand a question but cannot answer | Sentence production needs practice | Answer several related prompts from memory |
| Your sentences repeatedly confuse a listener | Meaning or usage needs checking | Ask about one sentence and its intended context |
These are possibilities, not diagnoses. Change one part of your routine and see whether the relevant task becomes easier. Do not abandon useful input simply because speaking feels difficult; you may need to add output practice while keeping material that supplies words and models.
Get feedback where self-checking is weak
Answer keys help with controlled exercises. Transcripts help verify what a recording said. Neither can fully assess a new sentence whose intended meaning only you know. A teacher or capable language partner can help compare that intention with what your sentence communicates.
この文は自然ですか。 — Does this sentence sound natural?
間違いを直してください。 — Please correct the mistakes.
間違い (まちがい) means mistake, and 直す (なおす) means to correct or fix. When asking for help, include the situation and your intended meaning. “Is this natural when speaking to a shop assistant?” is easier to assess than an isolated sentence with no context.
Keep feedback narrow: one recurring particle problem or one unclear sound is a manageable target. Outside help can be occasional. There is no need to treat self-study and lessons as mutually exclusive, or to promise that a fixed number of lessons will solve every difficulty.
Common mistakes
Confusing recognition with independent use
Recognising an answer in a multiple-choice exercise is useful, but it does not show that you can produce it unaided. After checking an example, close the page and make a related sentence. If it does not come, reopen the model, identify the missing part, and try again later.
Collecting more resources than you can use
A new app may solve a real problem, but repeatedly restarting beginner lessons can hide gaps. Before adding anything, name the need: clearer audio, more reading at your level, or explanations you understand. If your current course meets that need, continue with the next manageable task.
Increasing new vocabulary while reviews become unmanageable
There is no universal daily word quota. Reduce new items when reviews become a burden, and choose words that recur in your course or daily interests. Include enough context to distinguish meanings. Knowing one English equivalent does not tell you every situation where a Japanese word fits.
Making every sentence a translation puzzle
English can help you understand a new pattern. Trouble starts when every attempt becomes a long English sentence that you then struggle to convert. Begin with a Japanese pattern you know and express a smaller message. Add detail as your available language grows.
Treating difficulty as evidence of failure
One confusing recording does not mean that your whole routine is broken. Lower its difficulty, shorten the task, or take a break. Progress can differ between reading, listening, speaking, and writing. Track the skill you actually want to improve instead of using one difficult activity as a verdict on your Japanese.
Practice
Try these ten questions before opening the answers. The planning answers are suggestions; the sentence answers are models that you can adapt.
1. Replace “get better at Japanese this week” with one goal you can demonstrate.
Show answer
For example: introduce yourself in three sentences without reading your notes. This gives you a task to attempt and a clear way to identify missing language.
2. You have thirty minutes and spend all of it adding vocabulary cards. What change would make the session more balanced?
Show answer
Add fewer cards and reserve time for course material, short listening, and a sentence from memory. The exact split can vary; the aim is to practise more than adding new information.
3. You cannot understand a recording even after checking several words. What are two reasonable adjustments?
Show answer
Choose an easier recording or work on a shorter segment with its transcript. Repetition becomes easier to assess when you can identify the meaning you are listening for.
4. Translate: “I am studying Japanese on my own.”
Show answer
日本語を独学で勉強しています。 — I am studying Japanese on my own.
5. Translate: “I will review yesterday's vocabulary words.”
Show answer
昨日の単語を復習します。 — I will review yesterday's vocabulary words.
6. Translate: “I studied Japanese yesterday.”
Show answer
昨日、日本語を勉強しました。 — I studied Japanese yesterday.
7. You want feedback on whether a sentence sounds natural. What can you say, and what extra information should you give?
Show answer
この文は自然ですか。 — Does this sentence sound natural? Also explain the intended meaning and the situation, including who you are speaking to.
8. Does successfully shadowing a recording prove that you can answer an unfamiliar question? Explain.
Show answer
No. Shadowing gives you the words to follow. Answering an unfamiliar question also requires understanding its meaning and selecting your own response. Practise a short prompt without the script as a separate task.
9. An anime character uses a line you want to copy. Name two things to check before using it with a stranger.
Show answer
Check what the line means in context and whether its level of politeness fits the situation. The relationship between characters and the dramatic tone can affect whether it is appropriate elsewhere.
10. Your listening improves but speaking still feels slow. Suggest a change that preserves what is working.
Show answer
Keep the useful listening and add a brief spoken response using its vocabulary. Repeat related prompts, and seek feedback on a recurring difficulty when possible. Slow speaking alone does not show that listening practice has no value.
FAQ
Can I learn Japanese without a teacher? Yes. You can learn a great deal through structured materials, audio, reading, and independent practice. The practical limitation is checking things you cannot yet judge, particularly original sentences and interaction. If conversation matters to you, add opportunities to respond to other people when possible. That can include language exchange or occasional feedback as well as lessons.
How long should I study each day? Start with time you can realistically protect. The thirty-minute plan above is an example, not a requirement or a guarantee. A shorter session with a clear task is still useful. If your schedule only permits longer sessions on some days, use those and look for small opportunities to revisit material between them when convenient.
Should I learn kanji before grammar? You do not need to finish kanji before studying sentences. Learn kana, basic vocabulary, and grammar together, then add kanji through familiar words and reading. Your course can provide a sequence. Prioritise recognising useful words in context instead of making complete knowledge of a character a condition for moving forward.
Can anime be my main learning material? For a beginner, anime alone leaves you to discover the grammar sequence, select suitable vocabulary, and judge speaking style yourself. A structured course makes those tasks more manageable. Keep anime as a motivating source of short scenes to investigate, and compare expressions with material that explains their meaning and context.
When should I ask someone for feedback? Ask when the same confusion keeps returning, when an answer key cannot evaluate your own sentence, or when interaction is the skill you want to practise. Bring a specific example and explain your intention. You can continue studying independently while using that feedback to choose a narrower practice target.
For guided speaking and feedback, Book a trial lesson · $13, or explore practice options to choose your next step.
Vocabulary from this article
Every word below appears in the explanations or examples above. Read the Japanese, try recalling its meaning, and then check the table. The readings are supplied to support review; they are not a separate list to memorise before using the examples.
| Japanese | Reading | Meaning in this article |
|---|---|---|
| 独学 | どくがく | self-study |
| 教材 | きょうざい | learning materials |
| 文法 | ぶんぽう | grammar |
| 単語 | たんご | vocabulary word |
| 復習 | ふくしゅう | review |
| 会話 | かいわ | conversation |
| 練習 | れんしゅう | practice |
| 発音 | はつおん | pronunciation |
| 間違い | まちがい | mistake |
| 直す | なおす | to correct; to fix |
For a tab-separated flashcard copy, use the block below. Keep only the entries that are useful to your current study, and return to the example sentences for context.
独学 どくがく — self-study 教材 きょうざい — learning materials 文法 ぶんぽう — grammar 単語 たんご — vocabulary word 復習 ふくしゅう — review 会話 かいわ — conversation 練習 れんしゅう — practice 発音 はつおん — pronunciation 間違い まちがい — mistake 直す なおす — to correct; to fix
Sources
- The Japan Foundation: What is Irodori? — Official description of a course built around everyday communication tasks, with audio and downloadable learning materials.
- Seiichi Makino and Michio Tsutsui, A Dictionary of Basic Japanese Grammar, The Japan Times — Reference for basic sentence patterns and usage, including particles and polite verb forms.
The study schedule, troubleshooting suggestions, and practice questions are guidance created for this article. They are not a tested timetable for reaching a particular proficiency level, and the Japanese example sentences are original teaching examples.
「独学(どくがく)」は、おとる方法ではありません。とても上手な人の多くが、ほとんど一人で作りました。うまくいかないのは方法ではなく、順番です。「進んでいる感じ」がすることに時間を使い、「実さいに伸びること」をあとまわしにしてしまいます。
基本
順番
- ひらがな、そしてカタカナ — 2か月ではなく2週間。 先に進むには必要です(3つの文字)。
- 文法を1本の線で。 動画をたくさん見るより、1冊を順番に。文法はくさりです。て形ができないと、あとの形が全部止まります。
- 単語は毎日、アプリで。 少しずつ毎日。日曜日に3時間より、毎日20分です。
- 聞くのは最初の週から。 分からなくてかまいません。「どこで言葉が切れるか」の練習です。
- 話す・書くのを早く始める。 ここを後回しにするのが、独学が止まるいちばんの理由です。
1日の形
30〜45分を、こう分けます。
- 10分 — アプリの復習(最初にやります。時間がなくなると、ここを飛ばすからです)
- 15分 — 文法1つ。例文は声に出して言います
- 10分 — 聞くだけ
- 5分 — 今日のことを、習った形で3文
最後の5分が、いちばん効きます。自分の生活のことを言うと、「分かる」から「使える」に変わります。
今日は新しい文法を勉強しました。 — I studied new grammar today. (polite) 難しかったですが、面白かったです。 — It was difficult, but it was interesting. (polite; two clauses)
アニメの使い方
アニメは本物のインプットですが、先生としては半分です。耳・単語・やる気に使い、文法と話し方の手本にはしないでください。
やり方はせまくします。1話ではなく、1シーン。字まくあり→なし→好きな1文を全部調べる。1文を完全に分かるほうが、1話をなんとなく見るより強いです。
もう一度お願いします。 — One more time, please. (polite; the most useful sentence anywhere)
話し方(一人称や語尾)はキャラクターのものです。日本語の「わたし」を見てください。
もう少し先へ
独学が止まる3か所
1. speed(速さ)。 15秒あれば正しい文が作れます。会話は2秒です。この差は、時間のプレッシャーの中でしかちぢまりません。
2. 気づかないまちがい。 自分で気づけないまちがいは、直せません。助詞のずれ、語順、ていねいさのずれは、何年も残ります。
3. 頭の中で訳している。 ほとんどの人が通ります。これは段階で、自然には消えません。「訳す前に答える」を何度もやると消えます。
3つとも、インプットを増やしても直りません。
一人で「話す」練習
- 全部声に出す。 例文もカードも。だまって勉強すると、だまって話せない人になります。
- シャドーイング。 音声に重ねて同時に言います。一人でできる練習では、いちばん強いです。
- 3文日記。 「したこと・思ったこと・明日すること」。毎日同じ形で。
- 1日を日本語で実きょうする(心の中で)。 止まった所が、あなたの単語リストです。
- 月に1回、自分の声を録音する。 つらいですが、いちばんはっきり進歩が見えます。
毎日、少しずつ続けています。 — I'm keeping at it a little every day. (polite)
JLPT は?
しめ切りとしては便利、目標としては注意が必要です。JLPTには話す試験も書く試験もありません。N2に合格しても会話ができないことがあります。それは試験の欠点ではなく、「はかっているもの」がちがうだけです。
どのくらいかかりますか
正直な答えは「年ではなく、時間の合計しだい」です。でも形は決まっています。最初の数か月は速く、まん中に長い平らな時期があり、そのあとまた伸びます。
平らな時期でやめる人が多いです。理由は、むずかしいからではありません。分かるのに、新しく学んでいる感じがしないからです。これは力の止まりではなく、「インプットからアウトプットへ変える時」という合図です。
先生は何のためにいるの?
上の3つのためです。その場で言わせること・見えないまちがいを直すこと・少しだけ上の難しさに合わせること。
「文法を説明してくれる人」は、いちばん価値が低い答えです。文法の説明は、無料でいくらでもあります。
よくあるまちがい
- 教材を集めて、1つも終わらせない。 3冊の4章より、1冊の20章です。
- 「準備ができてから」話そうとする。 準備は、へたに話すことでできます。
- だまって勉強する。 読む人になって、話す人になりません。
- アニメを教科書にする。 インプットとやる気には最高です。
- 復習を飛ばして新しいカードを入れる。 復習がしくみそのものです。
- ローマ字を続ける。 かなが いつまでも重いままです。
止まる所と、直し方
| 止まっているもの | 見え方 | 直すもの |
|---|---|---|
| 速さ | 文はできるが、間に合わない | 時間つきのアウトプット(会話・シャドーイング・録音) |
| 気づかないまちがい | 自然に聞こえるまちがい | 聞き分けられる人の訂正 |
| 頭で訳している | 話す前に必ず止まる | 量+時間のプレッシャー |
| 平らな時期のやる気 | 進んでいる感じがしない | インプットからアウトプットへ変える |
練習
まず答えてから、見てください。1番と2番はペアです。
1. 毎日20分と、日曜に3時間。どちらがいいですか。
答えを見る
毎日20分 — 間をあけてくり返すほうが、記おくに残ります。
2. 3冊の4章と、1冊の20章。
答えを見る
1冊の20章 — 文法は順番です。やり直すたびに、やさしい所に戻ります。
3. 一人でできる、いちばんいい話す練習は?
答えを見る
シャドーイング — 音声に重ねて言います。速さ・発音・リズムを同時に練習できます。
4. 好きなアニメの1シーンで何をしますか。
答えを見る
1文を完全に分かるまで調べる — 1話をなんとなく見るより強いです。
5. 「今日は新しい文法を勉強しました」と言ってください。
答えを見る
今日は新しい文法を勉強しました — そして声に出します。それが練習です。
6. 「難しかったですが、面白かったです」と言ってください。
答えを見る
難しかったですが、面白かったです — 形容詞の過去形+「が」。2つの文をつなげたら、最初の大きな一歩です。
7. なぜN2に合格しても話せないことがあるのですか。
答えを見る
JLPTに話す試験がないから — 読むことと聞くことをはかる試験です。
8. まん中の「平らな時期」は何の合図ですか。
答えを見る
インプットからアウトプットへ変える時 — 力が止まったのではありません。
9. もう一度言ってほしい時は?
答えを見る
もう一度お願いします — どこでも使えます。
10. 独学でできない3つは?
答えを見る
その場で言うプレッシャー・見えないまちがいの訂正・ちょうどいい難しさ — 3つとも、相手が必要です。
よくある質問
一人で上手になれますか。 読む・聞くは、一人でかなり上まで行けます。話すのは会話が必要です。練習しているのは「速さ」だからです。
どの教科書がいいですか。 有名なものなら、どれでも。大事なのは最後までやることです。
単語アプリだけで足りますか。 「見て分かる」には十分です。「自分で出す」には足りません。両方向の練習がいります。
アニメは勉強に入りますか。 字まくつきで見るのは「ふれる」ことで、勉強ではありません。耳とやる気には役に立ちます。話し方についてはていねい体とふつう体を見てください。
いつ話し始めますか。 こわいと思うより早く。かな・数百語・基本の文の形があれば、おそくてへたな、役に立つ会話ができます。
練習する相手がいない時は? シャドーイング、声の日記、心の中の実きょう。そして、できる時に会話の時間を作ってください。訂正つきの1時間は、一人の10時間ではできないことをします。
この記事に出た単語
下のブロックをタップして全部えらび、コピーしてください。Anki では ファイル → 読み込み、ノートの種類は 基本、区切りは タブ です。
独学 どくがく — self-study 勉強 べんきょう — study 文法 ぶんぽう — grammar 単語 たんご — vocabulary word 発音 はつおん — pronunciation 続ける つづける — to continue 覚える おぼえる — to memorise, learn 復習 ふくしゅう — review 予習 よしゅう — preparation, pre-study 練習 れんしゅう — practice 教材 きょうざい — study materials 難しい むずかしい — difficult 面白い おもしろい — interesting 毎日 まいにち — every day 少しずつ すこしずつ — little by little 会話 かいわ — conversation 間違い まちがい — mistake 直す なおす — to correct, fix
私はユウキです。東京で日本語を教えています。 italki の Top 1% の先生で、アニメは1,500本以上見ました。生徒のほとんどは、文法を自分で勉強してから来ます。さがしているのは、一人では作れない1つだけ——訳す時間をくれない相手です。
More drills like the ones above, plus a timed JLPT-style mock test: Practice · N5上のような練習問題と、時間つきのJLPT形式のもぎ試験: 練習ページ · N5
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本当の会話で、ためしてみませんか?
30-minute trial lesson, $13. Times shown in your own timezone.
30分の体験レッスン、$13。時間はあなたのタイムゾーンで表示されます。
Book a trial lesson · $13