He usually has breakfast at 8 o'clock.
Общий вопрос
Does he usually have breakfast at 8 o'clock?
Отрицание
He does not usually have breakfast at 8 o'clock.
Специальный вопрос
When does he usually have breakfast?
Альтернативный вопрос
Does he usually have breakfast or dinner at 8 o'clock?
Вопрос к подлежащему
Who usually has breakfast at 8 o'clock?
Разделительный
He usually has breakfast at 8 o'clock, doesn't he?