这句话用过去式或用现在完成时式翻都可以表达出原文的意思:
1.过去式—— We translated both of of the files .
( 我们已按时把两个文件都翻译了)—— 回答:Did you translate one of the fiels?
2.现在完成式
We have already translated both of the files .
(我们已经把两个文件都翻译好了)——回答:Have you translated one of the files yet?
供你参考.