Japanese Grammar

The Potential Form (Can do)

To express ability ('I can speak Japanese') or possibility ('I can eat this'), we change the verb into its potential form.

What is the Potential Form?

In English, we add the word 'can' before a verb (can eat, can go). In Japanese, we don't add a new wordโ€”we change the verb itself.

The most important thing to remember: When a verb changes into the potential form, the object particle usually changes from ใ‚’ (o) to ใŒ (ga).

Example: ๆ—ฅๆœฌ่ชžใ€Žใ‚’ใ€่ฉฑใ™ (Speak Japanese) -> ๆ—ฅๆœฌ่ชžใ€ŽใŒใ€่ฉฑใ›ใ‚‹ (CAN speak Japanese).

Conjugation Rules

Group 1 (U-Verbs)
Change 'u' sound to 'eru'
โ†’ใ€œใˆใ‚‹ (eru)
The 'u' row becomes the 'e' row + ru
ๆ›ธใ (kaku)
โ†’ๆ›ธใ‘ใ‚‹ (kakeru)
Can write
่ฉฑใ™ (hanasu)
โ†’่ฉฑใ›ใ‚‹ (hanaseru)
Can speak
ๅพ…ใค (matsu)
โ†’ๅพ…ใฆใ‚‹ (materu)
Can wait
้ฃฒใ‚€ (nomu)
โ†’้ฃฒใ‚ใ‚‹ (nomeru)
Can drink
Group 2 (Ru-Verbs)
Drop 'ru', add 'rareru'
โ†’ใ€œใ‚‰ใ‚Œใ‚‹ (rareru)
Note: Many young people just use 'reru' (tabereru)
้ฃŸในใ‚‹ (taberu)
โ†’้ฃŸในใ‚‰ใ‚Œใ‚‹ (taberareru)
Can eat
่ฆ‹ใ‚‹ (miru)
โ†’่ฆ‹ใ‚‰ใ‚Œใ‚‹ (mirareru)
Can see
Group 3 (Irregular)
ใ™ใ‚‹ (suru)
โ†’ใงใใ‚‹ (dekiru)
Can do (COMPLETELY different word)
ใใ‚‹ (kuru)
โ†’ใ“ใ‚‰ใ‚Œใ‚‹ (korareru)
Can come

Example Sentences

็งใฏๆ—ฅๆœฌ่ชžใŒ่ฉฑใ›ใพใ™ใ€‚
Watashi wa nihongo ga hanasemasu.
I can speak Japanese.
ๆผขๅญ—ใŒ่ชญใ‚ใพใ›ใ‚“ใ€‚
Kanji ga yomemasen.
I cannot read kanji.
ๆ˜Žๆ—ฅใ€ใƒ‘ใƒผใƒ†ใ‚ฃใƒผใซ่กŒใ‘ใพใ™ใ‹๏ผŸ
Ashita, paatii ni ikemasu ka?
Can you go to the party tomorrow?

Teacher's Advice

Understanding the grammar shift

Why does ใ‚’ change to ใŒ? Think of it this way: The potential form acts more like an adjective describing a state of possibility, rather than an active verb. So 'Nihongo ga hanaseru' literally feels more like 'Japanese is speakable (to me)'. That's why we use ใŒ.

JLPT Exam Patterns

  • โ€ขKnowing that ใ™ใ‚‹ becomes ใงใใ‚‹ (N5/N4)
  • โ€ขThe particle shift from ใ‚’ to ใŒ (N4)
  • โ€ขDistinguishing 'mirareru' (potential: can see) from 'mieru' (spontaneous: is visible) (N4)

Master the Potential Form

Practice transforming verbs into their potential forms to speak about your abilities fluently.

Start Practice โ†’
Japanese Potential Form: How to say 'can do' | Nihongo Pass