I'm sorry for my late commenting.
We tought you about inf. in last class. Junior high school secondly grade ss met that structure. In my opinion, inf. is one of the most difficult structure to teach. But we managed to make the part of class.
The strong point
Our class was based on real class. So I never thought to complete our class like a real class, and we did teaching stay in 10 minites.
The weak point
As Mr. Hall said, our class contained more mechanical practice than meaningful it.
