Compléter Present perfectVersion en ligne English par Alejandro Castro Garzón 1 last haven't finished have haven't interrogative scratched eaten have gone has negative stayed played negative stayed interrogative affirmative We only use never in sentences . We only use ever in and sentences . Yet is the word in the sentences . We only use yet in and sentences . Examples : I never in California He his head with a wall You ever to Valencia Has she ever in class ? I already my homework I beisball yet Have you an onion yet ?