翻译：我是那个与你一起参加10次会议的人

I am the guy who had attended ten meetings with you

假如是10个会议的话。。

I'm the person who attended meetings with you for ten times.

是参加了10次吗？

那就没错了for ten times，十次。

I'm the person who attended the tenth meeting with you.

I 'm the person who joined the 10th conference with you ..

i am the person who had attended ten meetings with you

I am the one of who have meet with you 10 times
I am the guy who have paticipate the meeting with you 10times