I. Jak zadać pytanie?
Pytania na „czy" zadajemy poprzez zamianę miejscami operatora have / has i podmiotu.
They have just finished. → Have they finished yet?
She has read a good book lately. → Has she read a good book lately?
II. Czy, gdy zadajemy pytanie, to orzeczenie wraca do formy podstawowej?
Nie.
III. Jak odpowiedzieć na pytanie na „czy"?
Pełna odpowiedź ma następującą postać:
Have you visited John yet? - Yes, I have. / No, I haven't.
Has your father phoned school yet? - Yes, he has. / No, he hasn't.
Has Sarah gone to school? - Yes, she has. / No, she hasn't.
Have they been to London yet? - Yes, they have. / No, they haven't.