My father ___(work) in the factory since three years ago.答案是has worked,我填has been working,可不可以呢?为什么

Question

My father ___(work) in the factory since three years ago.答案是has worked,我填has been working,
可不可以呢?为什么

Answer 1

has worked是现在完成时,现在完成时后面跟since引导的时间点.has been working是现在完成进行时,一般强调动作进行的时候选择完成进行时,后面跟for引导的一个时间段：例如：I have been reading the book for two hours.你的题目后面的时间是since引导的时间点,所以用完成时比较好.