Of all his books, the most interesting is one an dinosaurs.
句中the most interesting为什么可以作主语?
在意思明确的情况下,“定冠词+形容词”后面的名词可以省略。如:
They are fine actors. Jones always gets hold of the finest (actors).(摘自章振邦主编《新编高级英语语法》p.708)
所以,Of all his books, the most interesting is one an dinosaurs. = Of all his books, the most interesting ( book ) is one an dinosaurs.