had he not been so busy taking the diamonds,he would have felt the blow

问题描述:

had he not been so busy taking the diamonds,he would have felt the blow
第一句为什么把had放在最前面 请仔细分析一下这个句子

虚拟语气,条件状语从句,这种情况下,可以吧助动词had提到前面,同时从句倒装.
If he had not been so busy taking the diamonds,.
事实是,过去他忙于拿钻石以至于...
不可能没有不忙于拿砖石以至于...
所以是虚拟语气
如果,if,引导的是条件状语从句.
希望能帮上你