If he_____hard in the past five years,things wouldn't be going so smoothly A.had not been workingB.was not working C.has not been working D.were not working这道题选A,我选了B,为什么选A,选其他的为什么不对呢
问题描述：
If he_____hard in the past five years,things wouldn't be going so smoothly A.had not been working
B.was not working C.has not been working D.were not working
这道题选A,我选了B,为什么选A,选其他的为什么不对呢
答
先判断这是虚拟语气.
有过去的时间：过去的五年里.---所以是与过去事实相反的,所以虚拟语气的句式：if 主语+ had 过去分词.主语 +should/would +have+ 过去分词.