You don't respect your boss, do you?
She has made a final decision, hasn't she?
Your dog can crawl under a chair, can't it?
Sam and Kate are going to become vegetarians, aren't they?
Запомни, какой вспомогательный глагол (do, can, may) в предложении - такой и в разделительном вопросе, но с противоположным значением! :)