在expect, believe, think, suspect等动词的否定或疑问形式后的宾语从句中，我们经常用“ should+动词原形(或完成形式)”，表示惊奇，怀疑，不满等。

　　I never thought that he should be such a brave young soldier.

　　我们从来没想到他是个如此勇敢的小战士。

　　练习：

　　1) that the time will soon be ripe for intervention in Iran，t hey would be faced by a large army?

　　[A]It is believed

　　[B]Should they believe

　　[C]They would believe

　　[D]If they would believe

　　2) I think it advisable that he for Tokyo soon.

　　[A]will leave

　　[B]may leave

　　[C]leave

　　[D]leaves