Because you swap the roles of partners during the dialogue! While the students are role-playing monitor them closely, correct the mistakes if necessary or note.
Role plays are an excellent way of getting your students to practise their English. Work is usually a good topic to begin with when teaching adults. Many are.
Want to role play without feeling like you're in a cheesy '80s porno? Here's how.
EFFECTIVE ROLE-PLAY ACTIVITIES FOR ADULT LEARNERS. by Ana María Rozzi de Bergel. Teacher of English, Licenciada en Gestión Educativa.