N'asụsụ Igbo, akụkụ "na-" bụ akara oge ugbu a (present continuous tense marker). Mgbe a na-etinye "na-" n'ihu ngwaa (verb), ọ na-egosi na omume ahụ na-eme ugbu a, ya bụ n'oge a.
Dịka ọmụmaatụ, n'okwu "na-arị," akụkụ "na-" na-egosi na omume ịrị (ịrịgo ma ọ bụ ịrị elu) na-aga n'oge a. Otu aka ahụ, "na-eri" pụtara na-eri ugbu a, "na-aga" pụtara na-eje ugbu a.
Nke a dị iche na oge gara aga (past tense) nke na-eji akụkụ dị iche iche dịka "-rV" (dịka "rịrị", "gara"), na oge ga-abịa (future tense) nke na-eji "ga-a" (dịka "ga-arị").
Ya mere, Oge a (present tense) bụ azịza ziri ezi, n'ihi na "na-" bụ akara a na-eji egosi na ihe na-eme ugbu a n'asụsụ Igbo.
