Compléter Present perfectVersion en ligne English par Alejandro Castro Garzón 1 negative interrogative haven't stayed affirmative last have has played haven't interrogative gone have scratched stayed finished negative eaten 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 ?