Here are the key characteristics of an interrogative sentence:
* Ends with a question mark (?). This is the most obvious way to identify an interrogative sentence.
* Typically starts with a question word (who, what, when, where, why, how).
* Often uses a helping verb (is, are, do, does, have, has, will, can, could, etc.) before the subject. This inverts the usual subject-verb order.
Here are some examples of interrogative sentences:
* What is your name?
* Where are you going?
* Why are you late?
* Do you like pizza?
* Can you help me?
* Have you seen my keys?
Interrogative sentences are essential for communication because they allow us to gather information, request clarification, and engage in conversation.