Chinese phrase
你参加过〜吗？ nǐ cān jiā guò 〜 ma
Meaning
Have you ever taken part in ___?
When to use it
This asks whether someone has ever taken part in an activity. It is a simple, polite way to ask about past experience, with the final part naming the activity.
Example dialogue
你参加过书法比赛吗？ nǐ cān jiā guò shū fǎ bǐ sài ma
Have you ever taken part in a calligraphy competition?
没参加过，但我想试试。 méi cān jiā guò dàn wǒ xiǎng shì shì
I haven't, but I'd like to try it.