when the earthquake come back,we can do better than them/ 为什么主句不用将来时?

when the earthquake come back,we can do better than them/ 为什么主句不用将来时?
when the earthquake come back,we can do better than them/ 为什么主句不用将来时?

when the earthquake come back,we can do better than them/ 为什么主句不用将来时?
因为主句用了can,can是情态动词没有将来时.主句要表达的是我们能够,所以用了can,此时不需要再用将来时了.

因为主句用了can，can是情态动词没有将来时。主句要表达的是我们能够，所以用了can，此时不需要再用将来时了。