Broadly, there are yes/no questions (e.g., Is it hot in here?) and so-called wh-questions (e.g., Where do you live?). Leaving aside minor forms such as tags (e.g., It's hot, isn't it) and echoes ( e.g., You're what?) Yes/no questions can be divided into those with a need for do support and those without.
If the corresponding affirmative form of the question has only a lexical verb and no auxiliary verb, then the question form requires the insertion of (do) before the subject.
- He likes this. -> Does he like this?
- He went to Halifax. -> Did he go to Halifax?
- You will marry me. -> Will you marry me?
- He is nice. -> Is he nice?
- He plays in Etobicoke. -> Where does he play?
- He has played in Etobicoke. -> Where has he played?
- Where did he go?
- How should I do it?
- Why is that happening?
- The door went bang. -> What went bang?
- Brett can get the pizza. -> Who can get the pizza?
- This pencil is the best. -> Which pencil is the best?
- I banged the door. -> What did you bang?
- Brett can get the pizza for us. ->Who can Brett get the pizza for?
- She likes that pencil. -> Which pencil does she like?