事がない

Meaning

1. expadj-i
   (something) has never occurred; to have never done (something); such a thing has not happened
2. expadj-i
   never happens; there is never a time when

Example sentences

• こんな馬鹿なことは言ったことが無い。

  That's the stupidest thing I've ever said.

• 彼女は今までに一度も恋をした事が無い。

  She has never fallen in love.

• 彼女は決して学校に遅れた事がない事を誇りにしている。

  She is proud of never having been late for school.