参加姐姐的婚礼让我觉得很开心。

Cānjiā jiějie de hūnlǐ ràng wǒ juéde hěn kāixīn.

Attending my older sister's wedding made me feel really happy.

读大学的时候我参加了舞蹈学会。

Dú dàxué de shíhou wǒ cānjiā le wǔdǎo xuéhuì.

I joined the dance society in university.

我参加了足球比赛。

Wǒ cānjiā le zúqiú bǐsài.

I participated in the football competition.