The ground is wet,it must have rained last night.
地面是湿的，昨晚肯定下雨了。
Unfortunate events have rained heavily upon us since last month.
从上月起，倒霉的事接踵而来。
But there is little evidence that it works - after all, how do investigating scientists know it would not have rained anyway?
然而，几乎没有证据表明这是可行的——毕竟，进行调查的科学家如何得知老天就一定不会下雨呢？
It must have rained last night.
昨天晚上肯定下雨了。
It must have rained last night.
昨晚一定下雨了。
It must have rained last night.
昨天晚上一定下雨了。
It can't have rained last night.
昨天晚上不可能下了雨。
The ground is wet , it must have rained.
地面是湿的，刚才一定是下过雨了。
The streets are wet. It must have rained.
街道是湿的，准是下雨了。
It must have rained, for the road is wet.
一定下雨了，因为路是湿的。
It must have rained, for the ground is wet.
一定下过雨，因为地面是湿的。
It must have rained, since the ground is wet.
一定下过雨，因为地是湿的。
It must have rained, since the ground is wet.
既然地面是湿的，那么一定是下雨了。
The road is wet. It must have rained last night.
路是湿的。昨天晚上一定下雨了。
The street is wet. It must have rained last night.
路面是湿的，昨天晚上肯定下雨了。
It must have rained last night. The ground is wet.
昨晚肯定下雨了，地都是湿的。
The road was muddy. It must have rained last night.
道路是泥泞的，昨天晚上一定下过雨了。
It must have rained last night, for the road is wet.
昨天晚上一定是下雨了，因为路还湿着。
It must have rained last night, for the road is wet.
昨晚一定下雨了，因为路面很潮湿。
The ground is wet . It must have rained last night .
地面很湿，昨天晚上一定下雨了。（表示对过去有把握的推测）
It must have rained yesterday, for the road was wet.
昨天一定是下雨了，因为路面很潮湿。
It must have rained yesterday, for the ground is wet.
昨天肯定下过雨了，因为地是湿的。
The ground is so wet. It must have rained last night.
地面那么湿，昨天晚上一定下过雨。
It must have rained last night, for the ground is wet.
昨晚一定下雨了，因为地面还是湿的。
It might have rained last night for the ground is wet.
昨晚可能下雨了，因为地面是湿的。
It might have rained last night for the ground is wet.
昨晚可能下雨了，因为地面是湿的。
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