Here are some key features of interrogative sentences:
* They begin with an interrogative word: Words like "who", "what", "where", "when", "why", "how", and "which" signal that a question is being asked.
* They often use inverted word order: The subject and verb are often reversed, for example, "Are you going to the party?" instead of "You are going to the party?"
* They aim to elicit information: The purpose of an interrogative sentence is to get an answer from the listener or reader.
Here are some examples of interrogative sentences:
* What is your name?
* Where did you go last night?
* Why are you so tired?
* Can you help me with this?
* Is it raining outside?
Let me know if you have any more questions!