In the sentence <em>"...feels comfortable because of the air dry."</em>, the linking verb is feels . This verb is linking "hot day" with the predicative adjective "comfortable" . Linking verbs (or copulas) have the <em>function of joinning the subject to its</em> <em>complement </em>, usually is the verb be, but other verbs have similar function: look, become, seem, feel, appear, remain, sound, etc.
