Sometimes it's all too easy to slip into informal language, ya know? Help your class master code-switching with the activity and drill provided here. The activity is a literature discussion where formal language is required. The description of how to encourage formal language is somewhat vague, so you might consider providing sentence frames or coming up with a list of discussion norms to clarify your expectations. Also included is a drill that will help learners categorize situations and understand how they correspond with language.