PS: Check out these free English learning resources: Tutorial: Almost and nearly; practically — Homophones — Top 1000 Inspirational quotes — Commonly Confused Words
- AlxbrNovember 2020
ΔΩΣΤΕ ΑΠΑΝΤΗΣΕΙΣ
AussieInBgNovember 2020
Almost always, we would say ”the book is on the shelf”. This is because the book and the shelf surfaces make contact.
For sure, ”The book is in the bookcase” can be correct - if you want to emphasise that the shelf and sides of the bookcase surround the book.