For a long time that day her mind dwelt on the subject. She imagined the scene when he should discover her little deception.
那天,这个问题一直在她的脑海里挥之不去。她想象着当他发现了她的小把戏时的情景。
不理解句中should的用法以及含义。为什么不直接说when he discovered her...? 即可否用discovered替换should discover?
谢谢老师!