把一个英语句子改为虚拟语气
问题描述：
把一个英语句子改为虚拟语气
even if Tianjin is crossed by nine rivers and has a large amount of seafood,and the frogs on the banks are all served for the meals.
答
Even if Tianjin wasn't crossed by nine rivers and had a large amount of seafood,and the frogs on the banks wouldn't be all served for the meals.