The ground is wet,it must have rained last night.
地面是湿的，昨晚肯定下雨了。
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。
The road is wet. It must have rained last night.
路是湿的。昨天晚上一定下雨了。
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, since the ground is wet.
既然地面是湿的，那么一定是下雨了。
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。
The floor is very wet, it must have rained last night.
地上很湿，昨晚一定下雨了。
Since the road is wet, it must have rained last night.
既然路是湿的，那昨天晚上肯定下雨了。
It must have rained last night, for the ground is wet.
昨晚一定下过雨，因为地面是湿的。
Since the road is wet, it must have rained last night.
因为路面湿滑，昨晚一定是下了雨的。
It cannot have rained yesterday, for the ground is dry.
昨天不可能下过雨，因为地是干的。
It cannot have rained yesterday, for the ground is dry.
昨天不可能下过雨，因为地是干的。
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