过去式是participated in短语是participate in。

articipate：v.参加;参与；第三人称单数： participates现在分词： participating过去式： participated过去分词： participated 扩展资料They plan to participate in the autumn fair.他们计划参加秋季交易会。The girls in his class are willing to participate in the dancing party.他班上的.女生们很乐意参加这次舞会。Each child had participated in extracurricular activities at school.每个孩子都参加了学校的课外活动。The White House has not participated in any talks.白宫方面没有参加任何会谈