Present Perfect

Before playing the "Find someone who..." game, it would be advisable to start teaching the students how the PRESENT PERFECT tense is formed in English.

There is a great powerpoint presentation which not only explains the formation but also the main usese and some of the most used expressions used with the Present Perfect.

Check it here.

                                                                                                         Source: Screen capture slideshare by guestbfc1f5

Besides the explanations, there are many links to further practice which work very well for individual reinforcement.