むかしとんぼじゃありません
昔蜻蛉じゃありません
mukashitombojārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of むかしとんぼ

1. It is not a dragonfly.; I am not a dragonfly.

Negative
Polite
Terminal Form
Usually Written in Kana