Simple Sentences: Subject and Predicate. and Subject, Predicate, and Direct ObjectThe purpose of the Sentence Analysis is to aid in comprehension, name the parts of a sentence, and analyze these sentences based on these parts. Diagramming sentences allows the child to separate and identify these different components of sentences by arranging them in a diagram. All of these activities leads the child toward a greater appreciation for language, and a deeper comprehension of how language is structu