I noticed that John's manner was somewhat unusual. 
John was acting strangely.
John was acting as he always does.
Practice 12:Use attention-getting and user-friendly techniques.
Everyone needs to get involved.
A child is sitting under a tree.
We use the term burden of the USO in the same manner that other papers use the term cost of the USO.
The boxer hits his opponent with his left hook.
Two people are walking by a waterfall.