Structure
[な]Adjective + に + なる
[い]Adjective[く]+ なる
Exceptions:
いい → よくなる
Details
Part of Speech
Expression
Word Type
Verb
Register
Standard
品詞
表現
単語の種類
動詞
使用域
一般
About ~になる・~くなる
- 早く食べて、冷たくなるよ。Hurry up and eat, it will get cold.
- お茶が冷たくなっているよ。The tea got cold.
- コーヒーが温くなった。The coffee has become lukewarm.
- 私は医者にならない。I won't become a doctor.
Additionally, the adjective いい 'good' is an exception to the regular conjugation rules for い-Adjectives, and will conjugate as よくなる, not いくなる.
- 勉強をしているから、頭が良くなる。Because I study, I will become smart. (Literally, 'my head will get good')
Synonyms
Examples
難しくなる。
To become difficult.
嬉しくなる。
To become happy.
早くなる。
To become fast.
良くなる。
To become better.
綺麗になる。
To become pretty/clean.
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Genki I
Page 196
Genki I 2nd Edition
Page 234
みんなの日本語 I
Page 122 [CH 19]
Marugoto Elementary 2 (A2) Rikai
Page 149
Tae Kim's Japanese Grammar Guide
Page 129 & 130
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~になる・~くなる – Grammar Discussion
Most Recent Replies (40 in total)
Vesicularorb
About 29 days ago
Not sure where else to put this. I see in Japanese we use counter words typically as an adverb? And these adverbs seem to function as a noun for connections, ie we use の to connect to a noun after. But what is functionally the difference then between a sentence like 多くの木の公園 where we are describing the trees existing adverbially, vs a sentence like 木が多い公園 where just the い adjective is used plainly?
kariforuniajin
About 20 days ago
Question about ~くなる conjugation in an example that came up in the とき grammar point.
The sentence example is:
昨日の夜布団に入ったときに、トイレに行きたくなった。
“Last night when I got in my futon, I ended up needing to go to the bathroom.”
How does 「トイレに行きたくなった」translate to “I ended up needing to go to the bathroom.”
Upon reading it, I would have thought it meant something more like, “Last night when I entered my futon, I didn’t want to go to the bathroom.”I’m just wondering what the rules are for conjugating verbs into ~くなる?
The grammar point in the ~になる・~くなる page does not cover verb conjugations, so I’m a tad confusedFuga
About 20 days ago
Hey @kariforuniajin !
In this sentence, 行く is conjugated using たい to create 行きたい ‘want to go’ and くなる is added to create 行きたくなる ‘I ended up wanting to go to the bathroom’. When the grammar point になる・くなる is attached to a verb conjugated using たい it will follow the conjugation rule of a い-adjective since たい is conjugated in the same way as い-adjectives.
We hope this clears it up!
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