Charles Babbage is generally considered ________ the first computer.

Charles Babbage is generally considered ________ the first computer.

A.to invent

B.inventing

C.to have invented

D.having invented

答案及解析： C

解析：

consider后接动名词作宾语，意思是“考虑”。consider后接带to的不定式作宾语补足语或主语补足语，意思是“认为”，分别构成consider sb．to do sth．和be considered to do sth．句型。如果表示过去发生的事情，动词不定式要用完成式。因为电脑是过去发明的，所以选择to have invented。