Question

【题目】If it _______ for his invitation the other day, I should not be here now.
A.had not been
B.should not be
C.were not to be
D.should not have been

Answer 1

【答案】A
【解析】考查虚拟语气。本句属于错综条件句的虚拟语气。If从句表示与过去事实相反，所以使用过去完成时，主句表示与现在事实相反，所以使用“情态动词+动词原形”。句意：如果不是因为前几天他的邀请，我现在就不会在这里了。故A正确。