What are yes or no questions?

There are two types of questions Wh questions and yes or no questions. Those question whose answer is either yes or no are called yes or no questions. We form these questions with an auxiliary verb (be,do or have).

The following are some examples:

Question	Answers
Are you sleeping?	yes
Is he your cousin?	no
Do you like cake?	yes?
Have they gone now?	no
Did you buy a car?	yes
Is she intelligent?	yes
Are they angry?	no
Do they play game?	yes?
Has she finished her work?	no
Will you go to park today?	yes