作业帮He has been working in the factory___.A.ever since B.10 year
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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!
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
再问： 可是答案是A呀！？
再答： 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
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
再问： 可是答案是A呀！？
再答： 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
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