This is from the Standard Course Book of HSK5, chapter 20. How to literally translate this: 一本本书翻开搭在上面？
At the moment, I am in this point: 一(a)本(classifier)本(classifier)书(book)翻开(unfolded)搭(put)在(in)上面(over).
As you can understand, it is unclear to me. For example why two classifiers 本？Maybe 本书 has a specific meaning? Ok, I would be able to understand in the begin: an unfolded book. But this: 搭在上面？is put in over? What does it mean?