(他们不知道书在哪)翻译英语~~~急

They don't know where is the book

楼上的2个都错了
这句话翻译要用宾语从句，且正常语序
应该是：They don't know where the book is

Where they do not know a book ?

They don't konw is book in the where

They don't know where the books are.
这里我都用的是复数因为我想 既然是 “他们” 了 就不大可能是一本
如果真的是一本的话 那就把最后边的books 去掉s 然后再把are换成is就可以了

5楼正解，复数的话7楼正解