The document discusses different types of sentences according to their structure and function. It defines four types of sentences: declarative sentences that state a fact or opinion, interrogative sentences that ask questions, imperative sentences that express requests or commands, and exclamatory sentences that convey emotion. Examples of each type are provided. Readers are given instructions to identify sentence types, arrange scrambled words into sentences, make different types of sentences based on pictures, and write a short narrative using all four sentence types.