The document provides information on report writing criteria and sentence structure. It discusses the key aspects of an effective investigative report, including clarity, accuracy, brevity, specificity, completeness and timeliness. It then defines the four main types of sentences according to structure - simple, compound, complex and compound-complex - and provides examples of each. The document also classifies sentences according to function as declarative, interrogative, imperative or exclamatory and gives examples of each type.