• Embedded Yes/No Questions: Whether

• 
• Embedded yes or no questions can also be formed using the word whether instead of the word if.  You can use whether in statements and questions with embedded questions. 

  
  

  Regular question: Is Earth Day an international holiday?
  

  Embedded question: I wonder if Earth Day is an international holiday.

  Embedded question: I wonder whether Earth Day is an international holiday.

  Embedded question: Can you tell me whether Earth Day is an international holiday?
•  Click on the play button to hear the audio

• Does your school have a recycling program?	Do you know whether your school has a recycling program?
  Are you going to the Earth Day event on April 22?	Tell me whether you are going to the Earth Day event on April 22.

 Source : Alison