您要查找的是不是：
- It must have been raining. The pavement is all wet. 刚才准是下雨了。人行道都湿了。
- It must have rained last night for the road is wet. 路面是湿的，昨晚肯定下过雨。
- It must have been a political decision. 这一决定准是和互相倾轧有关。
- I can't have seen a ghost it must have been imagination. 我看到的不可能是鬼－－一定是幻想的东西吧。
- It must have been a very arduous task to build the pyramids. 当时建造金字塔肯定是件万分艰钜的事。
- "Or it must have decided to go on holiday!" laughed another. “或者它一定是决定去度假了！”另一个男孩笑道。
- It must have go. 它一定已经过去了。
- It must have gone. 它一定已经过去了。
- His watch must have gone blooey. 他的表一定是出了毛病。
- I was convinced (ie sure) I saw you there, but it must have been someone else. 我原来真以为看见你在那里，一定是看错了人。
- It must have taken a lot of time to etch that. 蚀刻这个图案一定花了不少时间。
- He must have gone away,since the house is deserted. 住宅荒芜，他肯定已经离去了。
- It must have cost you a pretty penny to improve it. 在改建上一定花了你不少钱了吧。
- Something must have gone wrong with your watch. 你的表肯定有毛病了。
- It must have been a valuable experience. 那准是有价值的所见所闻了。
- He must have gone out playing around. 肯定是出去玩了。
- It must have been my godmother, Mrs. Campbell. 那想必是我的教母坎贝尔夫人。
- He must have gone to the United States. 他一定是去了美国。
- He must have gone to the clinic. 他一定是去医务室了。
- Thinking back,it must have been before the war. 回想起来，那一定是在战前。
