Sentence diagramming is a visual tool used to represent the structure of a sentence. It provides a clear and organised way to analyse the various components of a sentence, including subjects, verbs, objects, and complements.  Identify the subject and the linking verb in the sentence. The subject is the noun or pronoun the sentence is about, while the linking verb connects the subject to the predicate nominative. Draw a horizontal line. Place the subject on the left side of the line and the linking verb on the right side. Draw a vertical line separating the linking verb from the subject.  Draw a slanting line after the linking verb and place the predicate nominative after the line. Draw a slanting line below the horizontal line and p;ace the article after it.