e 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
e 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