In Arabic grammar, Kana (كان) is the verb “to be” and is widely used to create sentences conveying a sense of existence or state. Kana, along with its sisters, modifies the sentence structure and indicates a time or condition, usually in the past. When using Kana, the verb is followed by the subject (noun or pronoun) and the predicate, thus forming a basic sentence with various possible expressions. Understanding the function of Kana is essential for learners who want to enhance their command of Arabic grammar and consequently improve their overall communication skills in the language.