人称 にんしょう だい名詞 めいしだったら
ni ninshōdaimeishidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 二人称代名詞

1. If you were (referring to the second-person pronoun); If one were (referring to the second-person pronoun)

Tara Conditional
Linguistics