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Grammar Book

GrammarBook N5: Japanese Verb groups (u/ru/irregular)

  • 31 Dec, 2025
  • Com 0
N5-G-015

Verb Groups (U / Ru / Irregular)

Core / Verbs

๐Ÿ‘€ Layer A: Visual Guide (็›ดๆ„Ÿ็†่งฃ)

๐Ÿ“ Quick Summary (ใพใจใ‚)

ๆ—ฅๆœฌ่ชžใฎๅ‹•่ฉž(ใฉใ†ใ—)ใฏ3ใคใฎใƒใƒผใƒ ใซๅˆ†ใ‹ใ‚Œใพใ™ใ€‚ใ“ใ‚Œใ‚’็Ÿฅใ‚‰ใชใ„ใจใ€ใ€Œใพใ™ๅฝข(ใ‘ใ„)ใ€ใŒไฝœใ‚Œใพใ›ใ‚“๏ผ
Japanese verbs are divided into 3 Groups. This determines how they conjugate into “Masu-form”.

  • G1 (U-Verbs): End in u, ku, su, tsu, nu, bu, mu, ru. (Requires change: u โ†’ i).
  • G2 (Ru-Verbs): End in -iru or -eru. (Drop ‘ru’, add ‘masu’).
  • G3 (Irregular): Only two! “Suru” and “Kuru”.

๐Ÿ” Layer B: Deepening (ๆทฑๆŽ˜ใ‚Š)

๐Ÿ’ก Raya’s Hack (ๆ”ป็•ฅๆณ•)

ใ€Œใ‚‹ (ru)ใ€ใง ็ต‚(ใŠ)ใ‚ใ‚‹ ๅ‹•่ฉž(ใฉใ†ใ—)ใฎใ€ๅ‰(ใพใˆ)ใฎ ้Ÿณ(ใŠใจ)ใ‚’ ่ฆ‹(ใฟ)ใฆ๏ผ
ใ€Œใ‚ค(i)ใ€ใ‹ใ€Œใ‚จ(e)ใ€ใฎ ๆฎต(ใ ใ‚“)ใชใ‚‰ใ‚ฐใƒซใƒผใƒ—2๏ผˆใใฎใพใพใ‚ซใƒƒใƒˆ๏ผ‰๏ผ
ใ€Œใ‚ข(a)ใƒปใ‚ฆ(u)ใƒปใ‚ช(o)ใ€ใชใ‚‰ใ‚ฐใƒซใƒผใƒ—1๏ผˆๅค‰ๅŒ–(ใธใ‚“ใ‹)ใ™ใ‚‹๏ผ‰ใ ใ‚ˆ๏ผ

Look at the sound BEFORE “ru”. If it’s an “i” or “e” sound (Tabe-ru, Mi-ru), it’s usually Group 2. If it’s “a, u, o” (Nobo-ru, Tsukur-u), it’s Group 1!

๐Ÿšง Joy’s Mistake (ใ‚ˆใใ‚ใ‚‹้–“้•ใ„)

Scene: Joy adding ‘masu’ to ‘Yomu’ (Read).

Joy: ใ€Œใ‚ˆใ‚€ ใพใ™ใ€
(Yomumasu)

โŒ Wrong!

Why?

ใ€Œ่ชญใ‚€ (Yomu)ใ€ใฏใ‚ฐใƒซใƒผใƒ—1ใงใ™ใ€‚ใ€Œuใ€ใ‚’ใ€Œiใ€ใซๅค‰(ใ‹)ใˆใฆใใ ใ•ใ„ใ€‚ใ€Œ่ชญใฟใพใ™ (Yomimasu)ใ€ใŒๆญฃ่งฃ(ใ›ใ„ใ‹ใ„)๏ผ

Yomu is Group 1. You must shift the ‘u’ sound to ‘i’. Yomu โ†’ Yomi-masu.

๐Ÿ”ฅ Layer C: Practice Loop

Now itโ€™s time to test your learning through the next 10 practice drills!

Level 1: Basic (Identify the Group)

Q1. Tabe-ru (Eat) – ends in ‘e-ru’
็ญ”ใˆ: Group 2 (Ru-Verb)

(Tabe-masu)

Q2. Nom-u (Drink) – ends in ‘mu’
็ญ”ใˆ: Group 1 (U-Verb)

(Nom-i-masu)

Q3. Mi-ru (Watch) – ends in ‘i-ru’
็ญ”ใˆ: Group 2 (Ru-Verb)

(Mi-masu)

Q4. Ik-u (Go) – ends in ‘ku’
็ญ”ใˆ: Group 1 (U-Verb)

(Ik-i-masu)

Q5. Suru (Do) – Special!
็ญ”ใˆ: Group 3 (Irregular)

(Shimasu)

Level 2: Advanced (Conjugate to Masu)

Q6. Kaku (Write) โ†’ ?
็ญ”ใˆ: Kakimasu (ๆ›ธใใพใ™)

(Group 1: ku โ†’ ki)

Q7. Okiru (Wake up) โ†’ ?
็ญ”ใˆ: Okimasu (่ตทใใพใ™)

(Group 2: Drop ‘ru’, add ‘masu’)

Q8. Hanasu (Speak) โ†’ ?
็ญ”ใˆ: Hanashimasu (่ฉฑใ—ใพใ™)

(Group 1: su โ†’ shi)

Q9. Kuru (Come) โ†’ ?
็ญ”ใˆ: Kimasu (ๆฅใพใ™)

(Group 3: Irregular)

Q10. Kaeru (Return) – [Exception Alert!] โ†’ ?
็ญ”ใˆ: Kaerimasu (ๅธฐใ‚Šใพใ™)

(Exception: Looks like Group 2, but it is Group 1. Kaeru โ†’ Kaerimasu)

Related posts:

GrammarBook N5 : AใฏBใงใ™ (A is B) GrammarBook N5: The Particle ใฏ (topic marker) GrammarBook N5: The Particle ใŒ (identifier/existence marker) GrammarBook N5: The Particle ใ‚‚ (also)
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