His first book to be published next month is based on a true 是用to publish还是to be published?为什么?

His first book to be published next month is based on a true 是用to publish还是to be published?为什么?
His first book to be published next month is based on a true
是用to publish还是to be published?为什么?

His first book to be published next month is based on a true 是用to publish还是to be published?为什么?
他的第一本书将在下个个月出版,这本书是基于一个真实的故事.
to be published 主语是book 所以是被出版.

下个月将被印刷的他的第一本书是基于一个真实的故事写的
to be published 将被印刷或出版的

这句话是''他的第一本书下个月将发表是基于一个真实的故事''.
to be published是被动语态,