1)My dad has gone to Russia.
My dad hasn't gone to Russia.
2)I have touched a snake.
I haven't touched a snake.
3)My friends has studied English this year.
My friends hasn't studied English this year.
4)I have watched a film today.
I haven't watched a film today.
5)My best friend has readed a Harry Potter book.
My best friend hasn't readed a Harry Potter book.
6)My mum has flies in a helicopter.
My mum hasn't flies in a helicopter.