〜つ〜つ

“While doing … and … / Alternating between … and …” → Used to express that two actions or states are repeated alternately or occur back and forth over a period of time.

N1

Meaning

“While doing … and … / Alternating between … and …” → Used to express that two actions or states are repeated alternately or occur back and forth over a period of time.

Formation

Verb (ます-stem) + つ 〜 Verb (ます-stem) + つ

Explanation

〜つ〜つ is used when the speaker describes a situation where:

  • two actions are not done at the same time

  • but are repeated alternately

  • over a certain span of time

It often gives a sense of:

  • hesitation

  • fluctuation

  • gradual process

  • back-and-forth movement

This grammar is formal and written, and appears frequently in:

  • narratives

  • essays

  • analytical descriptions

  • JLPT N1 reading passages

💡 Core nuance:
“Doing A, then B, then A again…”