文法 ぶんぽう形式 けいしきじゃなかったです
bumpōkeishikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 文法形式

1. Wasn't a grammatical form.; Wasn't in the correct grammatical form.

Past/Perfective
Negative
Polite
Casual Register
Linguistics