Something must have happened on their way here,or they _____ by now.1.should have arrived 2.should arrive 3.would have arrived 4.would arrive 这道题的答案到底是1,3,4 那个,我看选1,3 的较多,还有选4的.

Question

Something must have happened on their way here,or they _____ by now.
1.should have arrived
2.should arrive
3.would have arrived
4.would arrive
这道题的答案到底是1,3,4 那个,我看选1,3 的较多,还有选4的.

Answer 1

这道题是《2002年北京地区成人本科学士学位英语统一考试A卷试题》的第47题
47.Something must have happened on their way here.Or they _________by now.
　A.should have arrived　　B.should arrive　　C.would have arrived　　D.would arrive
答案：C虚拟语气.第一句是must+have +过去分词的结构,表示对过去事实的推测.The road is wet.It must have rained last night.路是湿的,昨晚上肯定下雨了.因此我们可以推断：这是一个和过去的事实相反的虚拟语气.should +have +过去分词的结构,表示对过去动作的责备、批评.如：You should have gone over your lessons.你应当把功课复习好的.但是此句只是一个表示和过去的事实相反的虚拟句子,并没有责备的意思.本句的意思是：“路上肯定出事了.否则,他们现在已经到了.”因此正确答案应该是C.