为什么选D,请讲解,ThefirstcolorTVsetwasconsideredbymostpeoplethiscentury.A.havingbeeninventeditB.oneofwhominventedC.whohadinventeditD.tohavebeeninvented

Question

为什么选D,请讲解,
The first color TV set was considered by most people________this century.
　　A.having been invented it B.one of whom invented
　　C.who had invented it D.to have been invented

Answer 1

这是英语中的一个重要句型.Sb is said to do sth.该结构只有被动式无主动式.
常用于上述被动句型的动词还有：acknowledge,assume,believe,claim,consider,declare,estimate,expect,find,know,report,say,think等.
题干中的句型是该句型的替换句型 Sb is considered to do sth.
The first color TV set和invented间为动宾关系,故采用不定式采用被动式.外加invent发生在was considered 之前,故用完成被动式 to have been invented.