This document discusses different types of sentences: compound, complex, and compound-complex. It defines each sentence type and provides examples. A compound sentence contains at least two independent clauses joined with coordinating conjunctions. A complex sentence has one independent clause and one dependent clause joined by a subordinating conjunction. A compound-complex sentence is made up of at least two independent clauses and one dependent clause joined by conjunctions. The document also lists common coordinating and subordinating conjunctions and provides exercises for identifying sentence types.