ProfessorJohnsonissaid

問題詳情：

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“主語＋be said”後接動詞不定式，根據句中的時間狀語in the past year，用不定式的完成式表示已經發生的動作。此句相當於：It is said that Professor Johnson has made some significant advance in his research in the past year.]

知識點：非謂語動詞

題型：選擇題