He is watching TV now,isn't he? Разделительный
Is he watching TV now? Общий
Who is watching TV now? Вопрос к подлежащему
Is he watching TV or reading a book now? Альтернативный
When is he watching TV ? Специальный
Does he like watching TV? Общий
He likes watching TV now,doesn't he? Разделительный
Who likes watching TV now? Вопрос к подлежащему
Does he like watching TV or reading books now? Альтернативный
What does he like? Специальный