两者都是表示被动．
但前者可以充当句子的谓语结构,而后者则只能充当补语定语等修饰成分,不能构成谓语．如
The book is called Jane Eyre.(is called 是谓语)
I like the book called Jane Eyre very much.（called Jane Eyre是后置定语,句子的谓语是like）