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 express feelings such as joy, surprise, anger, or admiration. These sentences are different from declarative, interrogative, and imperative sentences, which serve other purposes. While a declarative sentence states a fact, an interrogative sentence asks a question, and an imperative sentence gives a command, exclamatory sentences focus on the speaker's emotional response. They can enhance writing by adding intensity and passion.