—（?）—,we would have finished the work on time.选Had Jim come的原因
问题描述：
—（?）—,we would have finished the work on time.选Had Jim come的原因
答
这是一个虚拟语气强调句.
原句应该是：If Jim had come,we would have finished the work on time.
意思是强调过去某个时间,如果Jim来了,我们就会按时完成工作.隐含的意思是：实际上由于他没有来,工作没有完成.
作为强调句的时候,谓语助动词提前.