The particle に in adverbs
The particle に fulfills a role in Japanese that would be described as “adverbial” in terms of English grammar.
会社に対して特に文句がない。
Kaisha ni taishite toku ni monku wa nai.
I don’t have particularly have any complaints toward my company.
最近、物価は急に上がりました。
Saikin, bukka wa kyū ni agarimashita.
Prices have suddenly increased of late.
これは非常にいい車です。
Kore wa hijou ni ii kuruma desu.
This is an extremely good car.