Who do you think was generally considered （ ）the lamps?A inventing B to invent C to have invent
问题描述：
Who do you think was generally considered （ ）the lamps?A inventing B to invent C to have invent
Who do you think was generally considered （ ）the lamps?
A inventing B to invent
C to have invented Dhaving invented
为什么选C啊
答
有三个知识点：
1,do you think这里视为插入语,也就是说做题的时候不予考虑其对句子的影响,因此这句话实际上是Who was generally considered （ ）the lamps?
2,consider的用法：
consider sb.to do是认为某人做某事的意思.
例:China is considered to be one of the greatest country in the world.中国被认为是世界上最伟大的国家之一.
consider doing 是考虑的意思.
例I am considering going or not.我正在考虑去不去.
注意到题中who was considered,这是明显的被动形态,OK,这句话的意思也是再问谁被大家认为发明了灯泡?因此排除了A和D
3,不定式的一般时to do和完成时to have done的区别：
to do强调了一般时态,现在的和打算的概念；而to have done强调了完成的,过去的概念.本题中的电灯显然是过去发明的,因此要选择C.