Can a linking verb also use helping verbs?
Yes. A helping verb links a subject with an action, For example: Charlie IS MAKING pizzas in the kitchen. A linking verb is a verb you use to link the subject and another part of a sentence. The second part is not an action verb, usually a description. For example: Charlie IS very SMART. In example 1, “is” is a helping verb. In example 2, “is: is a linking verb.