For teaching second conditional, you could be creative by using roleplay. For example, if you have a German student and a French student, have the French student act as a waiter and the German student as a customer. The waiter makes a suggestion and in response the customer makes an observation about how it would be different in his country.You might have such an exchange
Waiter: May I recommend the French onion soup. It is very popular in the north west region
Customer: If we were in Germany/ this was a German restaurant, you would probably suggest a salad
This would be a good exercise to use with the expected learning outcomes being:
practice of the second conditional in a creative setting
the learning of habits of other cultures.
(+ as an expected additional outcome)- the practice of functional language
Daniel Stavisky, Manchester