Question

If Mr. Dewey­ _____ present, he would have offered any possible assistance to the people there.

A．were

B．had been

C．should be

D．was

Answer 1

B

試題分析：考查虛擬語氣用法。本題考查的是if條件從句與過去事實(shí)相反的虛擬語氣，故從句用had + v-ed，主句用would / could/ should / might + v-ed。句意：如果Dewey先生在場的話，他會(huì)提供那里人們的任何可能的幫助。故B正確。
【知識拓展】
1. 表示與現(xiàn)在事實(shí)相反或不可能發(fā)生：條件狀語從句：一般過去時(shí)（虛擬語氣中be→were）主句用：would(should, could, might)+動(dòng)詞原形。
If we had time now, we would read it again.
If I were you, I would work hard.
2. 表示與過去事實(shí)相反或不可能發(fā)生：條件狀語從句：had+過去分詞；主句：would(should, could, might)+have+過去分詞。
If I had known your telephone number then, I would have called you.
3. 表示與將來的事實(shí)可能相反或不可能發(fā)生：條件狀語從句：①一般過去時(shí)②should +動(dòng)詞原形③were to+動(dòng)詞原形；主句：would(should, could, might)+動(dòng)詞原形。
If it should rain, the crops would be saved.