"The subject (story) is what the sentence is about,and the predicate describes something about the subject". This is a vice versa sentence, it repeats itself. Why does the subject tell you something about the subject and then the predicate repeats itself like the number (1) then (2) through whatever number is like a list. Is there a comma in a every sentence to tell the reader the sentence is in two or more parts like the subject and predicate as a sentence?