the police searched the whole building but found nothing unusual为什么用found
问题描述:
the police searched the whole building but found nothing unusual为什么用found
答
found是指找到了什么东西
look for是指寻找的过程
所以在这里用found,包括found nothing那为什么要用过去时??因为前面的动词用的是过去时好吧~~谢谢33