英语：I went to a three-day summer camp。
I took part in a three day summer camp.
1、夏令营：summer camp
相关短语：
疯狂夏令营 Camp Lazlo ; Camp Nowhere - Gail ; Camp Nowhere ; as Jessica Marie Alba
英语夏令营 An English Summer Camp ; The English Summer Camp ; English Camp ; Oxbridge Summer English Camp
老爸夏令营 Daddy Day Camp ; daddy
双语例句：
直到夏令营即将结束的那一天，当我的朋友们的父母开始陆续到达的时候，我才意识到自己是多么地想念爸爸妈妈。
It wasn’t until the last day of summer camp, when my friends’ parents began to arrive, that Irealized how much I had missed Mom and Dad.
2、参加： join ; attend；take part in ; participate in ; go in for ; enter into
相关短语：
参加党派 attach oneself to ; attach firstself to
参加聚会 Go to party ; come to the party ; Party ; join the party
欢迎参加 Welcome to ; Journal of Software
双语例句：
如果你参加俱乐部， 你就得遵守它的规章。
If you join the club, you have to abide by its rules.
扩展资料：
冬令营：winter camp
相关短语：
英语冬令营 ENGLISH WINTER CAMP
美国肯尼迪太空冬令营 KSC Camp
鳄鱼宝贝冬令营 Schnappi's Winterfest
冬令营未来社会 winter camp future society
双语例句：
从汕尾李阳疯狂英语冬令营回来后，我连续几天都在思考着人生哲学。
Back from LYCE winter camp in Shanwei, I spend several days thinking over philosophy of humanity.
在多年前一次冬令营期间，对哈佛大学法洛参考图书馆和隐花植物标本室的参观中，我偶然发现这个稀奇古怪的生物学+童话的组合。
I stumbled upon this curious blend of biology and fable during awintry campus visit to Harvard'sFarlow Reference Library and Herbarium a few years ago.
参考资料：我参加了为期三天的夏令营--有道翻译
亲：高老师祝你学习进步，每天都开心V_V！
望采纳，thx！本回答被提问者和网友采纳