~ない~はない
JLPT N4
Meaning
There is no ... that does not ...
Explanation
V-nai + N + はない
Examples
彼を知らない人はいません。
There's no one who doesn't know him.

Practice 「~ない~はない」 in context

Start Free Training →
~ない~はない — JLPT N4 Grammar | Nihongo Pass