as it did in the case of ...

问题描述:

as it did in the case of ...
这是新概念第三册第四课第一段最后一句话里面的.为什么要用as it did呢》》 请指教

as it did in the case of .的意思是"就像它在...那件事里做的那样"
是在过去已经发生过这样的事,也这样做过的了,所以要用过去式did