问题 选择题

Watch out for these animals! They could be terrified ______ a sudden loud noise.

A.being there

B.should there be

C.there was

D.there have been

答案

答案:B

题目分析:句意:小心这些动物!如果这里有一个突然的大的噪音,他们可能是非常害怕的。if引导虚拟语气,如果句中有should,可以将其提前,并将if省略,there be 表示有,故选B

点评:if的虚拟语气非常重要,简要概括如下:1、表示与现 在事实相反的情况,从句:If主语+过去时(Be动词用were);主句:主语+should/would/could/might+do: 2、表示与过去事实相反的情况,从句:If主语+had+done;主句:主语+should/would/could/might+have done 3、表示对将来情况的主观推测,从句:①if+主语+were to do②if+主语+should+do ③if+主语+did(动词过去式)/were ;主句:主语+should/would/could/might+do 

计算题
单项选择题