`1.` ( + ) I have been to Rome.

( - ) I haven't been to Rome.

( ? ) Have you been to Rome?

`2.` ( + ) You have been to Barcelona.

( - ) You haven't been to Barcelona.

( ? ) Have you been to Barcelona?

`3.` ( + ) Mark has been to South America.

( - ) Mark hasn't been to South Ameria.

( ? ) Has Mark been to South America?

`4.` ( + ) My parents have been to Africa.

( - ) My parents haven't been to Africa.

( ? ) Have my parents been to Africa?

`5.` ( + ) Ann has been to Argentina.

( - ) Ann hasn't been to Argentina.

( ? ) Has Ann been to Argentina?

`6.` ( + ) We have been to Budapest. 

( - ) We haven't been to Budapest. 

( ? ) Have we been to Budapest?

- Cấu trúc have/has been: ( + ) S + have/has been + to + N(place) 

                                           ( - ) S + haven't/hasn't + to + N(place)

                                            ( ? ) Have/Has + S + to + N(place)?