Verb → volitional form

Nghĩa: let's ___; I shall ___ (plain volitional)
Cấu trúc (Formation): Ichidan: drop る, add よう (食べる → 食べよう). Godan: u-row → o-row + う (行く → 行こう, 飲む → 飲もう). Irregular: する → しよう, くる → こよう.
Độ trang trọng: casual