例文:Excuse me, may I talk with you for a moment? We are guiding tourists here to improve our English conversation skills. If you don't mind, can we join you around?
悪い例:Hey you! Yes, you over there! We're guiding tourists, so be thankful! No thanks?! Shut up!
悪い例:This is the police! You're under arrest. We have a lot to ask you so come with us.