"كانا" is an Arabic verb that means "to be" or "to exist." It is often used in various grammatical contexts to indicate a state of being or existence. In Arabic, it is commonly used in both past and present forms, helping to describe situations, characteristics, or conditions. In addition to its basic meaning, "كانا" can also serve as an auxiliary verb in sentences. For example, it can be used to form the past tense or to express ongoing actions. Understanding "كانا" is essential for grasping the structure of Arabic sentences and enhancing overall language proficiency.