问题
选择题
His first book ________ next month is based on a true story.
A．published
B．to publish
C．to be published
D．being published
答案
答案：C
考查分词做定语。His first book与publish构成被动关系，用过去分词表示被动和已经完成，相当于一个定语从句。Published next month="which" was published;句意：上个月出版的他的第一本书是以一个真实的故事为基础的。