Question

If he ___ me his telephone number yesterday, I ___ able to ring him up now.

A. told, would be                B. had told, would have been

C. had told, would be             D. told, am

Answer

C

【解析】

试题分析：句意，如果昨天他告诉我他的电话号码，我现在就能给他打电话了。这是一个虚拟条件句，条件从句表示的动作和主句表示的动作发生的时间不一致，所以这是一个错综时间条件句。此时主、从句动词的形式应根据各自所表示的时间进行调整,if条件句是对过去的虚拟，故用过去完成时，而主句是对现在的虚拟，故用 would do形式，故选C。

考点：虚拟条件句中错综时间条件句的考查。