takes
Tom has entered the company for one month.
改为Tom has been in the company for one month.
His grandfather has died for twenty years.
改为His grandfather has been dead for twenty years.
Great changes have taken piace in Beijing for the past few years.
过去几年里，北京有很大的变化
自从我来到这里，这位老师就一直在这所学校教书。
Since I came here, this teacher has been teaching in this school.
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