For ichidan verbs — the class often called 一段 or simply "ru-verbs" — the te-form is as easy as Japanese conjugation ever gets: drop the final る and add て. 食べる (taberu) → 食べて (tabete). There is no doubling, no nasalizing, no vowel softening, no voicing — none of the euphonic changes that complicate the godan groups. The whole difficulty of this page is not forming the te-form; it is being sure the verb is actually ichidan in the first place.
The rule in one line
Remove る, attach て.
| Dictionary form | te-form | Reading |
|---|---|---|
| 食べる (to eat) | 食べて | taberu → tabete |
| 見る (to see / watch) | 見て | miru → mite |
| 起きる (to get up) | 起きて | okiru → okite |
| 教える (to teach / tell) | 教えて | oshieru → oshiete |
| いる (to be / exist) | いて | iru → ite |
| 寝る (to sleep) | 寝て | neru → nete |
| 忘れる (to forget) | 忘れて | wasureru → wasurete |
| 開ける (to open) | 開けて | akeru → akete |
朝ごはんを食べてから出かけよう。
asagohan o tabete kara dekakeyō
Let's eat breakfast and then head out.
ちょっとこれ見て！すごくきれいだよ。
chotto kore mite! sugoku kirei da yo
Hey, look at this! It's so pretty.
駅までの道を教えてください。
eki made no michi o oshiete kudasai
Please tell me the way to the station.
Why it stays clean
The godan groups change shape because their te-form historically attached to a stem ending in a consonant sound (書き + て, 飲み + て), producing clusters the language then smoothed. Ichidan verbs never had that problem. Their stem already ends in a pure vowel (食べ-, 見-, 起き-), so て attaches to a vowel with nothing to smooth. That is the deep reason the class is exception-free: there is no rough seam to file down.
疲れたでしょう。早く寝て、明日また頑張ろう。
tsukareta deshō. hayaku nete, ashita mata ganbarō
You must be tired. Get to bed early and let's try again tomorrow.
傘を電車に忘れて、次の駅まで取りに戻った。
kasa o densha ni wasurete, tsugi no eki made tori ni modotta
I left my umbrella on the train and went back to the next station to get it.
The real trap: is it really ichidan?
The danger is not the te-form rule — it is misjudging the class. A verb whose dictionary form ends in る might be ichidan (drop る, add て) or godan (る → って). Get the class wrong and you produce ×帰て instead of the correct 帰って.
There is a reliable test. Look at the vowel of the kana immediately before る:
- If it is an い-row or え-row sound, the verb is usually ichidan → drop る, add て. 食べる, 見る (mi-ru), 起きる, 教える.
- If it is an あ・う・お sound, the verb is godan → use って. 作る (tsuku-ru), 乗る (no-ru), and 終わる (owa-ru) all fit this cleanly. (Watch out for 帰る, which looks like an え-row ichidan verb but is a godan exception — covered just below.)
| Before-る vowel | Class | Example | te-form |
|---|---|---|---|
| え (e-row) | ichidan | 食べる (taberu) | 食べて |
| い (i-row) | ichidan | 起きる (okiru) | 起きて |
| あ (a-row) | godan | 作る (tsukuru) | 作って |
| う (u-row) | godan | 乗る (noru) | 乗って |
| お (o-row) | godan | 取る (toru) | 取って |
This one test resolves the majority of verbs on sight. English has no equivalent problem — our verbs don't split into two conjugation classes that share an ending — so this is a genuinely new habit to build. Practise it until "the vowel before る" is the first thing you notice.
Honest warning: the vowel test has exceptions
The test is a strong heuristic, not an iron law. A well-known set of everyday verbs have an い-row or え-row sound before る and yet conjugate as godan — they look ichidan but take って. You must memorize these directly:
| Verb (looks ichidan) | Actually godan → te-form |
|---|---|
| 帰る (kaeru, to go home) | 帰って |
| 入る (hairu, to enter) | 入って |
| 走る (hashiru, to run) | 走って |
| 知る (shiru, to know) | 知って |
| 切る (kiru, to cut) | 切って |
| 要る (iru, to need) | 要って |
| 喋る (shaberu, to chat) | 喋って |
The sharpest case is a pair that sound identical in the dictionary: 切る (kiru, "to cut") and 着る (kiru, "to wear"). Both are pronounced kiru with き before る, so the vowel test would call both ichidan. But 切る is a godan exception, while 着る is genuinely ichidan — and their te-forms diverge:
ケーキを半分に切って、二人で分けた。
kēki o hanbun ni kitte, futari de waketa
I cut the cake in half and we split it between us.
寒いから、コートを着て出かけた。
samui kara, kōto o kite dekaketa
It was cold, so I put on my coat and went out.
切る → 切って (godan), but 着る → 着て (ichidan). And 着て is read kite — the very same sound as 来て ("come"). Only the kanji and context keep the three apart. When a verb is on the exception list, trust the list over the vowel test.
仕事が終わって、家に帰って、すぐに寝た。
shigoto ga owatte, ie ni kaette, sugu ni neta
I finished work, went home, and went straight to sleep.
That sentence shows the danger vividly: 帰る looks like an ichidan え-verb but gives 帰って, not ×帰て. For a full walk-through of sorting the two classes, see identifying ichidan vs godan.
Common mistakes
❌ 仕事が終わったら、すぐ家に帰て。
shigoto ga owattara, sugu ie ni kaete
Incorrect — 帰る is godan, so it takes って, not just て.
✅ 仕事が終わったら、すぐ家に帰って。
shigoto ga owattara, sugu ie ni kaette
Come straight home when you finish work.
Treating a godan る-verb as ichidan is the number-one te-form error for English speakers. 帰る, 走る, 切る, 知る all take って.
❌ 毎朝六時に起きって、走っています。
maiasa rokuji ni okitte, hashitte imasu
Incorrect — 起きる is genuinely ichidan, so it never doubles; it's 起きて.
✅ 毎朝六時に起きて、走っています。
maiasa rokuji ni okite, hashitte imasu
I get up at six every morning and go running.
This is the mirror mistake: forcing って onto a true ichidan verb. 起きる drops る cleanly → 起きて. (Note how 走る, right beside it, is godan → 走って.)
❌ ちょっとここに居って、動かないで。
chotto koko ni itte, ugokanaide
Incorrect — いる (to be) is ichidan; ×居って collides with 行って.
✅ ちょっとここにいて、動かないで。
chotto koko ni ite, ugokanaide
Stay right here for a sec, don't move.
いる (to exist) is ichidan → いて. Doubling it to ×居って would produce the sound itte, which is 行く's te-form — a genuine ambiguity you avoid by keeping いる clean.
Key takeaways
- Ichidan: drop る, add て. No euphonic changes, ever — the easiest class.
- The same clean stem builds every form: 食べる／食べます／食べない／食べて／食べた.
- The hard part is class ID: check the vowel before る — い/え-row usually means ichidan, あ/う/お means godan (って).
- Memorize the look-alike godan exceptions: 帰る, 入る, 走る, 知る, 切る, 要る, 喋る → all take って.
- The two irregulars する and 来る stand apart from this class entirely.
Now practice Japanese
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Start learning Japanese→Related Topics
- The Irregulars: する → して, 来る → 来てN4 — The te-form of Japanese's only two irregular verbs — する becomes して and 来る becomes 来て (read きて) — plus the compounds built on each.
- Godan う・つ・る → ってN4 — The first godan te-form group: verbs ending in う, つ, or る take the doubling change (促音便) to form って — 買う→買って, 待つ→待って, 取る→取って — plus the る-verb trap.
- The te-form Song: All Rules on One PageN4 — The complete te-form system on a single page, built around the classic learner mnemonic — う・つ・る→って, む・ぬ・ぶ→んで, く→いて, ぐ→いで, す→して, plus ichidan and the two irregulars.
- The て-form: Japanese's Universal ConnectorN4 — Why the tenseless, politeness-free て-form is the single most productive conjugation in Japanese — the hinge that feeds requests, progressives, sequence, permission, and dozens more constructions.