
Japanese has only five vowels and a simple sound system, but English speakers still make the same pronunciation mistakes again and again. The good news: each one has a clear fix.
Most of these mistakes come from English habits: reducing vowels, stressing one syllable, gliding vowels into diphthongs, and ignoring sounds that English does not have. In Japanese, some of these habits change the meaning of a word.
This post covers nine common mistakes. For each one you get a short explanation, a table of minimal pairs (real words that differ by one sound), audio with the pairs in natural sentences, and a short drill. At the end there is a "listen and choose" quiz.
When you are ready to practise with real speech, Corodomo's pronunciation courses let you practise sentence by sentence and get an AI score for pronunciation accuracy and fluency.
English is stress-timed. Stressed syllables are long and loud, and the rest are squeezed. Japanese is mora-timed. Every mora (beat) takes about the same time, including long vowels, small っ and ん.
English also has many vowel sounds, and it changes them freely: "a" in "about" becomes a weak "uh", and "o" in "go" becomes "oh-w". Japanese has five short, pure vowels: あ, い, う, え, お. They do not change in unstressed positions.
So the core rule for this whole post is simple: keep every beat, and keep every vowel pure.
English speakers often say 空手 (karate) as "kuh-RAH-tee": the first vowel becomes a weak "uh" and the last becomes "ee". A more careful learner may say "kah-rah-tay", but "tay" is still a glide (e + i). Japanese え is short and pure, like the "e" in "get".
The glide matters. In Japanese, え + い sounds like a long え. So if め (eye) becomes "may", it starts to sound like めい (niece). The same happens with お: "oh-w" sounds like a long お, so とる can drift toward とおる.
| Word | Reading | Meaning | English habit | Aim for |
|---|---|---|---|---|
| 空手 | からて (karate) | karate | "kuh-RAH-tee" | か・ら・て, three even beats |
| カラオケ | karaoke | karaoke | "carry-OH-key" | カ・ラ・オ・ケ, four even beats |
| お酒 | おさけ (osake) | alcohol, sake | "SAH-kee" | け like "ke" in "kettle" |
| 寿司 | すし (sushi) | sushi | "SOO-shee", round lips | す with relaxed, flat lips |
| Minimal pair | Romaji | Meaning |
|---|---|---|
| 目 (め) / めい | me / mei | eye / niece |
| 取る (とる) / 通る (とおる) | toru / tōru | to take / to pass through |
Drill: say あ・い・う・え・お with a mirror. Your jaw and lips should stop still on each vowel, with no slide at the end. Then say め, めい, め, めい: the first is one beat, the second is two.
English marks important syllables with stress: louder, longer and higher. Standard Japanese uses pitch accent instead: each mora is high or low, and loudness and length stay the same. In Tokyo Japanese, 雨 (あめ, rain) goes high-low, and 飴 (あめ, candy) goes low-high.
When English speakers stress a mora, they also make it longer. That extra length can sound like a long vowel, which is a bigger problem than wrong pitch. So the first fix is: keep the beats even, and change only the pitch.
| Word | Reading | Meaning | Tokyo pitch |
|---|---|---|---|
| 雨 | あめ (ame) | rain | high-low |
| 飴 | あめ (ame) | candy | low-high |
| 箸 | はし (hashi) | chopsticks | high-low |
| 橋 | はし (hashi) | bridge | low-high, the next particle drops |
Pitch accent is a big topic, so this post keeps it short. To look up patterns, try OJAD (Online Japanese Accent Dictionary) from the University of Tokyo, and read our guide to Japanese pitch accent with an accent checker. Note that Corodomo's AI scores pronunciation accuracy and fluency; it does not grade pitch accent.
Drill: hum the word first ("mm-mm", high-low or low-high), then say it with the same melody and two equal beats.
A long vowel in Japanese is two beats, not one. English does not use vowel length to change meaning, so English speakers often cut long vowels short. Then おばあさん (grandmother) becomes おばさん (aunt), and ビール (beer) becomes ビル (building).
| Minimal pair | Reading | Romaji | Meaning |
|---|---|---|---|
| おばさん / おばあさん | お・ば・さ・ん / お・ば・あ・さ・ん | obasan / obāsan | aunt, middle-aged woman / grandmother, elderly woman |
| ビル / ビール | ビ・ル / ビ・ー・ル | biru / bīru | building / beer |
| 主人 / 囚人 | しゅじん / しゅうじん | shujin / shūjin | (my) husband / prisoner |
| ここ / 高校 | ここ / こうこう | koko / kōkō | here / high school |
Drill: tap the table once per mora. おばさん = 4 taps, おばあさん = 5 taps. The long vowel gets its own tap, with no break in the sound.
The small っ (sokuon) has no sound of its own. It is a one-beat pause where your mouth is ready for the next consonant but waits. English has a similar moment in "bookcase" or "hot tea", but it does not change meaning. In Japanese, it does.
| Minimal pair | Reading | Romaji | Meaning |
|---|---|---|---|
| 来て / 切手 | きて / きって | kite / kitte | come (te-form) / postage stamp |
| 音 / 夫 | おと / おっと | oto / otto | sound / husband |
| 坂 / 作家 | さか / さっか | saka / sakka | slope, hill / writer |
| 部下 / 物価 | ぶか / ぶっか | buka / bukka | subordinate / prices (cost of living) |
Drill: say "hot-tea" in English slowly and notice the stop before "tea". Now say き・っ・て with that stop held for one full tap. Alternate: きて, きって, きて, きって.
ん is a full mora. English speakers often glue it to the next sound, so こんな (konna) becomes こな (kona), and きんえん (no smoking) becomes きねん (commemoration). Before a vowel or y, ん must not join the next syllable. Romaji shows this with an apostrophe: kin'en, kin'yū.
ん also changes its sound by position: like "m" before p, b, m (さんぽ, sanpo), like "ng" before k, g (ぎんこう, ginkō), and like a nasal hum before vowels, y, s and h (ほんや, hon'ya). You do not need to think about this much. Just keep it one beat long.
| Minimal pair | Reading | Romaji | Meaning |
|---|---|---|---|
| 粉 / こんな | こ・な / こ・ん・な | kona / konna | flour, powder / this kind of |
| 記念 / 禁煙 | き・ね・ん / き・ん・え・ん | kinen / kin'en | commemoration / no smoking |
| 記入 / 金融 | き・にゅ・う / き・ん・ゆ・う | kinyū / kin'yū | filling in (a form) / finance |
The Japanese r (ら, り, る, れ, ろ) is a quick tap of the tongue tip just behind the upper teeth. It is close to the "tt" in American "better" or the "dd" in "ladder". An English r (curled tongue, round lips) or a heavy English l sounds foreign, although people will usually understand you.
The real risk is the other direction: if your tap is too strong, it sounds like d. Then まる (circle) can sound like まど (window). Keep the tap light and fast.
| Minimal pair | Reading | Romaji | Meaning |
|---|---|---|---|
| 丸 / 窓 | まる / まど | maru / mado | circle / window |
| 楽 / 抱く | らく / だく | raku / daku | easy, comfortable / to hold (in your arms) |
Drill for ん: say き・ん・え・ん with a small hum on each ん, and do not touch your tongue to the roof of your mouth before え. Drill for r: say "gotta, gotta" quickly in American English, then change it to ごら, ごら. Then try ら・り・る・れ・ろ with the same light tap.
English has "ts" only at the end of words ("cats"). At the start of a word, English speakers often drop the t: つなみ becomes "soo-nami". In Japanese, that can change the word: つき (moon) vs すき (like).
ふ is not an English f. Your top teeth do not touch your lip. Bring both lips close together and blow gently, as if you are cooling hot soup. The vowel う after it is short, with relaxed lips.
| Pair / word | Reading | Romaji | Meaning |
|---|---|---|---|
| 月 / 好き | つき / すき | tsuki / suki | moon / to like |
| 次 / 過ぎ | つぎ / すぎ | tsugi / sugi | next / past (a time) |
| 冬, ふとん | ふゆ, ふとん | fuyu, futon | winter, futon |
| 豆腐, 二つ | とうふ, ふたつ | tōfu, futatsu | tofu, two (things) |
Drill: say "cats" and hold the "ts". Add a short vowel: "cats-u". Now drop "ca": つ. Repeat つき, すき, つき, すき. For ふ, hold a sheet of paper in front of your mouth: it should move a little, and your teeth should not touch your lip.
In standard Japanese, い and う often become whispered (devoiced) when they sit between voiceless consonants such as k, s, sh, t, ch, h, or at the end of a sentence after one. That is why です often sounds like "des" and すき sounds like "s'ki". How much speakers do this depends on speed and region.
English speakers make two opposite mistakes here. Some say every vowel fully ("de-SU", "su-KI"), which sounds slow and robotic. Others drop the whole mora, which breaks the rhythm. The vowel goes quiet, but the beat stays.
| Word | Reading | Sounds like | Meaning |
|---|---|---|---|
| です | desu | "des" | is, am, are (polite) |
| 学生 | がくせい (gakusei) | "gak'sei" | student |
| 地下鉄 | ちかてつ (chikatetsu) | "ch'katetsu" | subway |
| 好き | すき (suki) | "s'ki" | to like |
| 明日 | あした (ashita) | "ash'ta" | tomorrow |
Drill: whisper the whole sentence first, then say it aloud but keep the whispered vowels in です, がくせい and すき. Keep tapping one beat per mora.
Katakana loanwords look like English, so English speakers say them in English. But they are Japanese words with Japanese sounds and Japanese rhythm. A vowel follows every consonant except ん, and English "-er" endings usually become a long vowel.
If you say "McDonald's" in English, a Japanese listener may need a second to understand you. If you say マクドナルド in six even beats, it is instantly clear.
| English | Japanese | Romaji | Mora | Watch out for |
|---|---|---|---|---|
| McDonald's | マクドナルド | Makudonarudo | 6 | a vowel after every consonant |
| coffee | コーヒー | kōhī | 4 | two long vowels |
| hotel | ホテル | hoteru | 3 | end with a light る, not "tel" |
| convenience store | コンビニ | konbini | 4 | shortened word; ん is a full beat |
| computer | コンピューター | konpyūtā | 6 | "-ter" becomes ター, a long vowel |
| ice cream | アイスクリーム | aisukurīmu | 7 | no "cr" cluster: ク・リ |
Drill: write the katakana, split it into mora with dots (ア・イ・ス・ク・リ・ー・ム), and tap each one. Forget the English word while you say it.
Play the clip. You will hear six sentences. For each one, choose the word you hear. Do not look at the answers until you finish.
Missed 1, 5 or 6? Work on long vowels. Missed 2, 3 or 4? Work on small っ. In both cases, count the beats: listening and speaking improve together.
Pronunciation improves through short, regular practice with feedback. You do not need an hour a day. Ten focused minutes are enough if you work on one mistake at a time.
| Week | Focus | Mistakes from this post |
|---|---|---|
| 1 | Pure vowels and even beats | 1, 2 |
| 2 | Length: long vowels and っ | 3, 4 |
| 3 | ん, r, つ, ふ | 5, 6, 7 |
| 4 | Natural flow: whispered vowels and loanwords | 8, 9 |
For feedback beyond your own ears, the pronunciation courses on Corodomo give you sentence-by-sentence practice by topic. The AI scores your pronunciation accuracy and fluency and highlights unclear words, which is useful for catching dropped beats and unclear sounds. It does not grade pitch accent, so use OJAD for that. Full AI scoring is part of the Plus plan.
For more listening and speaking material at your level, visit the Learn Japanese hub.
Related reading: Japanese Shadowing Practice for Beginners: A Step-by-Step Guide · Japanese Shadowing vs Repeating: Which Method Should You Use?
For most English speakers, it is timing: long vowels, small っ and ん each take a full beat, and English does not use length this way. These mistakes can change the meaning of a word, so they matter more than a slightly foreign r.
You do not need to master it early, but it helps to know it exists and to copy the melody when you shadow. Focus on even beats and pure vowels first. When you are ready, use OJAD or an accent checker to look up patterns.
Tap the tip of your tongue once, lightly, just behind your upper front teeth. It is close to the "tt" in American "better". Do not curl your tongue like an English r, and do not press hard, or it will sound like d.
The final う in です is usually devoiced (whispered) in standard Japanese, because it comes after the voiceless s at the end of a sentence. The vowel goes quiet, but the beat is still there. Many speakers devoice less when they speak slowly or carefully.
Yes, for some parts. Corodomo's AI scores pronunciation accuracy and fluency and highlights unclear words. Full AI scoring is in the Plus plan (from $6/month billed yearly); the Free plan has limited AI usage. For pitch accent, use OJAD and compare by ear.
Practice with Corodomo: Learn Japanese · Learn with videos · JLPT practice