 Activity for teaching passive voice, role play, blame it on your sister. What child hasn't done something wrong and blamed a brother or sister for the damage? This can be made more realistic for the students by setting them up in small groups to role play as a family. You might also have them act out their favorite example in front of the class at the end of the activity. Have two students in each group play the siblings, and one or two as parents who pass judgment. Have them swap roles regularly. Have the parents prompt questions such as how was the window broken? Have the siblings blame each other using passive voice, such as the window was broken by a stone thrown by K, know it was a ball kicked by Joe. A nice variation is to have the two siblings create reasons which blame a third party, know it was broken by a big bird. The question doesn't have to be in a passive voice, but you should encourage maximum use of the passive in the excuses. For example how did the cake end up on the floor? It was knocked off the table when K walked past.