问题描述：
1.我在上海上过3年学/工作过3年.(语境 人已经回来了)
2.我在上海工作/学习三年了.是现在完成进行时么? 帮忙翻译下。感谢.
谢谢了。
问题解答：
I have studied/worked in Shanghai for three years.
I have been studying/working in Shanghai for three years.
1 I have been in shanghai for three yesrs for study/working
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