です
(Desu)
な-adjective non-past.
Connection rules
- +Stem + です (polite) or + だ (plain). Attributive form adds な before a following noun.
- +Common な-adjectives: 静か, 元気, 便利, 親切, 有名, きれい (note: きれい looks like an い-adjective but is actually な-adj), 嫌い (same).
- +Past, negative, and other forms use copula forms (see deshita, dewa-arimasen).
Examples
1.
この部屋は静かです。

Kono heya wa shizuka desu.
This room is quiet.
「な-adjective non-past」
2.
彼女は元気だ。

Kanojo wa genki da.
She is in good spirits. (plain)
「な-adjective non-past」
Practice
My teacher is kind.
私の先生はとても___。
Romaji also accepted