Вопросительные:
Have you already met Mr. Bin and his wife?
Has Linda learnt English before?
Have you ever been to America?
Have they finished yet?
Утвердительные :
I have already met Mr. Bin and his wife.
Linda has learnt English before.
I have been to America.
They have already finished.
Отрицательные:
I haven’t met Mr. Bin and his wife yet.
Linda hasn’t learnt English before.