There are many different ways to form questions. Let's look at two kinds of questions: yes / no questions and WH- questions.
Yes / No Questions
A yes / no question is a question that can be answered with yes or no.
Is he Italian? Yes, he is / No, he isn't
Do you like music? Yes, I do / No, I don't
You ask for information using WH- question words (who, what, where, how, whose, why, and when).