Question

_______ Anirban Maitra, a professor at Oxford University, Jack’s success would not have been possible.

A．If it wasn’t for

B．Were it not for

C．Had it not been for

D．If it hasn’t been for

Answer 1

C

试题分析：通过分析句子，可知其中包含一个虚拟条件句。根据主句“would not have been”可看出这是对过去情况的虚拟，所以条件句用过去完成时。又因为虚拟条件句中有had, should, were时，可以将if去掉，然后把had, should, were提到主语前面，故选C。
点评：注意区分真实条件句和虚拟条件句，真是条件句实现的可能性非常大，而虚拟条件句往往指不能实现的或纯属假想的情况。