He has been working in the factory___.A.ever since B.10 years ago C.since 10 years

问题描述:

He has been working in the factory___.A.ever since B.10 years ago C.since 10 years
D.10 years before
求详解,最好每个选项都讲解一下!

C
因为主句用了现在完成进行时,这个时态和完成时的区别是:完成进行时的言下之意是还将继续干下去,所以,
A无此语法
B过去式,不对
D完成时,也不对可是答案是A呀!?不好意思,我打错了,C是无此语法,因为since后面跟时间点,不好跟时间段,如果C改成时间点,也可以跟完成进行时A是对的,从那时到现在,是个词组,我刚才笔误了,正在修改,你追问了,就改不了了