She has finished her homework. (Утвердительное)
Have you finished your homework? (Вопросительное)
She hasn't finished her homework yet. (Отрицательное)

They have gone to the cinema. (Утвердительное)
Have they gone to the cinema? (Вопросительное)
They haven't gone to the cinema yet. (Отрицательное)

He has bought a new car. (Утвердительное)
Has he bought a new car? (Вопросительное)
He hasn't bought a new car yet. (Отрицательное)

I have eaten breakfast. (Утвердительное)
Have you eaten breakfast? (Вопросительное)
I haven't eaten breakfast yet. (Отрицательное)

We have visited Paris. (Утвердительное)
Have you visited Paris? (Вопросительное)
We haven't visited Paris yet. (Отрицательное)