书是可数名词。
book：n.书；书籍；印刷(或电子)出版物；著作；本子；簿子；
v.(向旅馆、饭店、戏院等)预约，预订
（图片来自网络侵删）
The book is an analysis of poverty and its causes.
这本书分析了贫困及其原因。
What books have been set for the English course?
英语课布置要用哪些书？
She's searching for subject matter for her new book.
她要写一部新书，正寻找题材。
