ProfessorJohnsonissaid

问题详情：

Professor Johnson is said ________ some significant advance in his research in the past year.

A．having made   B．making

C．to have made  D．to make

【回答】

C　[句型“主语＋be said”后接动词不定式，根据句中的时间状语in the past year，用不定式的完成式表示已经发生的动作。此句相当于：It is said that Professor Johnson has made some significant advance in his research in the past year.]

知识点：非谓语动词

题型：选择题