Question

这里用can't还是couldn't还是用哪个都行？

There isn't any water on the road. It can't/couldn't have rained last night .
我觉得应该用could't 因为是昨天夜里发生的事情啊。

Answer 1

can't have done表示对"过去"或“已经”发生的事的推测，其肯定形式是must have done,疑问句形式是can...have done，如果句子中有明确的过去时间状语，则是对过去发生的事的推测，否则，是对已经发生的事的推测。所以，这句话是：

There isn't any water on the road. It can't have rained last night .

Answer 2

为您解答
应该是都可以，都表达的是对过去的推测，couldn't 更加不确信而已。

追答

can have done 通常只用于疑问句和否定句；用于疑问句时表怀疑,用于否定句时表不确定.
例如：
Can they have left so soon?
难道他们这么快就走了?（表怀疑）
He can’t have been to that town.
他不可能去过那座城市.（表不确定）

could have done 可用于肯定句、疑问句和否定句；用于肯定句表惋惜也可以表示对过去动作的推测,用于疑问句表怀疑,用于否定句表不确定.

Answer 3

couldn't