• Negative Tag Questions

• 
• If the main sentence is affirmative, the tag question is negative.

  -You are a doctor, aren't you?
•  Click on the play button to hear the audio

• Affirmative Sentence	Negative Tag
  You like coffee,	don't you?
  Jane plays the piano,	doesn't she?
  The weather is nice,	isn't it?
  We're eating dinner,	aren't we?

• Remember! Negative tag questions always use the contracted form. 

 Source : Alison