コンビニ弁当 べんとうじゃありませんでした
kombinibentōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of コンビニ弁当

1. It wasn't a convenience store bento.; It wasn't a boxed lunch from a convenience store.

Past/Perfective
Negative
Polite
Terminal Form