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情态动词和虚拟语气 1. —I left my handbag on the train, but luckily someone gave it to a railway official. — How unbelievable to get it back! I mean, someone it. A. will have stolen B. might have stolen C. should have stolen D. must have stolen 解析：本题考查情态动词。句意：“我把包忘在车上了，幸运的是，失而复得了”。“很难相信会有这种事发生，我的意思是，很有可能是会被别人偷走的。” will have stolen是将来完成时，表示到将来某个时间，某件事一定会发生，显然不符合语境; should have stolen表示“本该最某事”，也不符合意思; must have stolen表示“一定做了某事”，显然错误。这里应该选用might have stolen表示说话者觉得包落在火车上，很有可能是会被别人偷走的。所以正确答案为B。 答案：B 2. They have arrived at lunchtime but their flight was delayed. A. will B. can C. must D. should 解析：本题考查“情态动词＋have done”的用法。句意：他们本应该在午饭时间就到达的，但是他们的航班被耽搁了。will have done表示将来完成时，与题意不符；can have done一般用于否定与疑问的推测，可以排除；must have done表示对过去发生事情的肯定推测，意为“肯定／必定做过某事”，也与句意不符；should have done表示“过去应该做某事（而实际上未做）”，符合句意。 | 
