【问】 Charles Babbage is generally considered____the first compu_ter.

A. to have invented B. inventing

C. to invent D. having invented(全国高考英语试题，1993)书上给的答案是A，但我认为正确答案应当是B。因为动词consider之后只能接动名

词，而不能接动词不定式。

【答】 上面的试题实质上是consider sb. to do这一结构的被动形式：They consider CharlesBabbage to have invented the first computer.→Charles Babbage is generaly considered to haveinvented the first computer.参见consider¹。