一个Sat IE
问题描述：
一个Sat IE
Because his experience in the naval medical corps had been rewarding,Bob applied to medical school after he was discharged from the navy.为什么was discharged不用改为过去完成时?
答
首先,be discharged这个动作应该是在Bob的experience之后才发生的,所以不用过去完成时.另外,其实过去完成时是一种强调,强调时间的先后顺序.这道题目,改,可以,不改,也没有错.SAT的题目,特别是挑错之类,它可能不是最好...