如果这个句子是 be +分词 的结构,那就要.
如果只是单独的分词或分词短语在句首作插入语,那就不可以倒装.
Surprised was I at that time.（这是为了突出 surprised）
Surprised,I quickly came to the fact that his success was based on all his failures in the past.（这里 surprised 是“形容词作插入语”,
属于主谓完全倒装：即 谓语 + 主语
部分主谓倒装是：助动词/情态动词（如do have be may等等）+ 主语 + 动词
有时,为了强调 be 后的过去分词或现在分词,也可把分词移至句首去.这样就形成了以下的倒装形式：
过去分词或现在分词 + be的各种形式 + 主语
Scattered on the floor were several books and magazines.