Present Perfect:
I have lost my keys.
He have worked as a botanist since his graduation
She have been interested in Australia all her life
I haven't done homework for Monday
I haven't eat frogs legs
They haven't seen each other fot ten years
Present Simple:
Peter travels to exotic places every year
She wears a pony tail
She loves to get together with her friends
He doesn't like extreme sports
It doesn't rain very much in Argentina
She doesn't like football