I've read it on a website that "True Linking Verbs, as their name implies, are always linking verbs and any form of verb "to be" is a linking verb."<br/><br/>But is it necessary for a linking verb to be the main verb of the object. <br/><br/>Consider the following example;<br/><br/>1. He is going to school.<br/><br/>Here "is" is an auxiliary. <br/><br/>So can we call it a linking verb?<br/><br/>GB