在expect, believe, think, suspect等動詞的否定或疑問形式后的賓語從句中的虛擬語氣
　　在expect, believe, think, suspect等動詞的否定或疑問形式后的賓語從句中，我們經常用“should+動詞原形(或完成形式)”，表示驚奇，懷疑，不滿等。
　　I never thought that he should be such a brave young soldier.
　　我們從來沒想到他是個如此勇敢的小戰士。
　　練習：
　　1) that the time will soon be ripe for intervention in Iran，they 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