When you would like to know something, you normally ask a question.
All questions have several common features:
  1. When you ask a question, you raise your voice at the end of the sentence.
  2. When you write a question, you put a ? at the end.
There are two types of questions.
  1. Yes/No Questions:
    When you want to know if something is true or not, you use a yes/no question: Are you tired? Do you want coke? answer: Yes, I am./ No, I'm not. Yes, I do./ No, I don't.
  2. Wh-Questions:
    When you want to know specific information about a fact/person/thing/place/manner/.. then you use a wh-question: Where is the post office? What do you want?

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