専門 せんもん知識 ちしきじゃありませんでした
semmonchishikijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 専門知識

1. I didn't have expertise.; I wasn't knowledgeable.; I didn't have the skills.

Past/Perfective
Negative
Polite
Terminal Form