Общий
1) Am I speaking with a dentist? Или Are you speaking with a dentist?
2) Is the patient sleeping now?
Разделительный
1) I am speaking with a dentist, ain’t ( aren’t) I?
2) The patient is sleeping now, isn’t he?
Вопрос к подлежащему
1) Who is speaking with a dentist?
2) Who is sleeping now?
Альтернативный
1) Am I speaking with a dentist or a vet ? Или Are you speaking with a dentist or a vet?
2) Is the patient sleeping or reading now?
Специальный
1) What am I doing ? Или What are you doing?
2) When is the patient sleeping ?
I have already finished my lunch.
He finished his home work yesterday.