Question

He is thought ___foolishly .Now he has no one but himself to blame for losing the job.

A. to act              B.  to have acted

C.   acting            D. having acted

Answer

B

【解析】

试题分析：句型“有人认为..已....”可用It is thought/ believed/ ...that sb have/has done...结构。从句中的动作发生在主句动作之前。该结构可转化为Sb is thought/believed +不定式的完成式。如：

It is reported that Cheng Yifei died several days ago.

The news reports that Cheng Yifei died several days ago.

Cheng Yifei is reported to have died several days ago.

因此B选项正确。

句意为“ 有人认为他已做了一件傻事。现在应怪他自己丢掉这份工作。”

考点：考查动词非谓语形式。

【名师点睛】考查非谓语动词。be thought to be 被认为，被看作，如：She is thought to be the top student in our class，类似的还有be regarded as/believed /found to be.本题还要考虑时间问题，后半句Now he has no one but himself to blame for losing the job.暗示主从句有明显先后关系，因此，从句要用完成时。