This document discusses changing simple sentences into compound sentences to improve writing. Simple sentences connected together can sound choppy, so using conjunctions like "and", "but", and "or" joins sentences for a smoother flow. Conjunctions are called FANBOYS. The example shows how three simple sentences about a boy can be combined into a single compound sentence for greater readability. Additional descriptions, phrases, adverbs and adjectives can further strengthen sentences. Learning activities provide practice combining sentences while adding relevant details to a story.