be on ,be in 有啥区别?

题目

be on ,be in 有啥区别?
be in the school play
give me some examples ,please
be on the cinema

答案

be in：在····包围之中,在····里 如be in the class room
be on:在····之上,在····表面如be on the table
也有的情况 如在操场上英式英语用be in the playground而美式英语中用be on the playground