An exclamatory sentence is a type of sentence that expresses strong emotion or excitement. It often ends with an exclamation mark (!). For example, "What a beautiful day!" conveys enthusiasm about the weather. Exclamatory sentences can be used to show feelings like joy, surprise, or anger. These sentences are different from declarative sentences, which simply state facts, and interrogative sentences, which ask questions. Exclamatory sentences can be found in everyday speech, literature, and even in social media posts. They help convey the speaker's emotions more vividly, making communication more engaging.