N5 grammar
〜くなる
kunaru
Becoming, with i-adjectives
Formationi-adjective, い to く + なる
くなる describes a change: it got colder, prices went up. The adjective takes its く form and なる carries the tense. Nobody has to be responsible for the change; it simply happened.
Examples
〜くなる is marked in each sentence. Tap any word for its dictionary entry.
日に日に寒くなっています。
It is getting colder and colder day by day.
このバナナは悪くなった。
These bananas went bad.
風がどんどん強くなった。
The wind grew stronger and stronger.
朝晩、涼しくなってきましたね。
It's getting cooler, particularly in the mornings and evenings.
日に日に彼は良くなるだろう。
Day by day he seemed to get better.