Past Participle
She/be/to Africa.
She's been to Africa.
I haven't never studied French.
WRONG
I have never studied French. or I haven't studied French.
have -
had
They/read/Hobbit/twice.
They've read Hobbit twice.
Have you never played volleyball?
WRONG:
Haven't you played volleyball? or Have you ever played volleyball?
She's never been there.
RIGHT:
She's = She has
Our mum/find/the keys.
Our mum hasn't found the keys.
Kim has never caughted a fish.
WRONG:
catch - caught (Past Simple) - caught (Past participle)
Kim has never caught a fish.
Have we win the championship?
WRONG:
win - won (Past Simple) - won (Past Participle)
Have we won the championship?