in the book are some fun facts about the world.为什么用are?不用have?

题目

in the book are some fun facts about the world.为什么用are?不用have?

答案

这句话倒装之前是这样的：
Some fun facts about the world are in the book.
这样are就很好理解了.
用have的话,the book就成了主语了
The book has some fun facts about the world.