have done sth
亲：高老师祝你学习进步，每天都开心V_V！
望采纳，thx!
曾经做过某事
Have been to do STH
“曾经做过某事”用英语
sth which has been once done
used to have done sth
你曾经做过某事吗？
Have you ever done sth.?
have done something before ....
done something before..
the thing(s) you did
the thing(s) you've ever done
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