A verb expresses an action or state, and the sentence attributes it to a subject. The subject may be a separate noun, an attached pronoun, or a concealed pronoun understood from the verb form. Thus a subject is grammatically present even when it is not written as a separate word.
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Why Every Verb Requires a Subject
Rules of the Fāʿil: Explicit Nouns, Pronouns, Number and Gender
A verb expresses an action or state, and the sentence attributes it to a subject. The subject may be a separate noun, an attached pronoun, or a concealed pronoun understood from the verb form. Thus a subject is grammatically present even when it is not written as a separate word.