What is an interrogative sentence?

An interrogative sentence is defined as a sentence in the indicative mood that asks a question. This type of sentence typically begins with a helping verb or an interrogative word such as "who," "what," "where," "when," "why," or "how." The primary function of an interrogative sentence is to elicit information from the listener or reader, which distinguishes it from other sentence types like declarative sentences that make statements, imperative sentences that give commands, or exclamatory sentences that express strong emotion. The structure and purpose of an interrogative sentence are crucial in understanding how we communicate inquiries effectively.