Find the mistake

It's a nice exercise to revise B1 and B2 grammar topics (conditionals, tenses, prepositions after certain verbs, etc.). The students look at the sentence and need to figure out what the mistake is.

If you have a group or a pair, it can be a race to see who can find the mistake faster. For each correct answer, they get a point.

If you teach offline, you can use a hotel bell. The students need to ring it as soon as they know the answer. If they name the mistake correctly, they get a point. If not, a point is taken from them. You can play in teams or individually.