This document discusses three strategies for sentence structure: coordination, subordination, and parallelism. Coordination connects related words, phrases, or clauses with conjunctions like "and" or "but." Subordination establishes one idea as more important by placing it in an independent clause and a less important idea in a dependent clause, using relative pronouns or subordinating conjunctions. Parallelism emphasizes similarities among ideas by repeating a grammatical structure using words paired with words and clauses with clauses.