“Why” questions are a type of grammatical construction in the English language that are used to ask for the reason or cause behind an action, event or situation. They are formed by using the adverb “why” and adding the subject of the sentence and the main verb. For example: “Why did you leave?”, “Why are you crying?”, “Why is the sky blue?”. These questions are asking for the reason or cause behind an action, event or situation. They are used to inquire about the purpose, the motivation or the explanation behind something. It can also be used to ask for clarification or to seek more information.