inesthreebears
birthday party生日派对 Birthday Party,Birthday Parties,Party all night米奇的生日派对 Mickey's birthday party举办生日派对 Birthday party,Organizing the birthday party

桑塔卢西亚
生日派对birthday partyeg.In honour of your moving out of the twenties, we are giving you a marvelousbirthday party .为庆祝你跨越二十岁,我们准备了一个盛大的生日宴会。He gave a handsome present to her at her birthday party .在她的生日派对上他给了她一件贵重的礼物。
麻辣土豆56
是 on the party 或 at the party都可以。具体怎么用,要看语境。基本上没有in the party(除非party是政党的意思,但题目已经指明是派对)
小蓉~蓉
谈论派对上的事情时候用at谈论人的时候用onHere is a rough guide to show you how many varieties of food and drink you will need at the party, 这里有个指南,告诉你如何为派对准备多种食品和饮料。 On the party, the host announced their engagement. 在派对上,主持人宣布了他们订婚的消息。 John and Mary first met each other on a friend’s birthday party. 约翰和玛丽最初在朋友的生日派对上认识。 或者大致上这么说吧,谈论到人,用on the party,谈论到事情,at the party。On the party其实用得颇多,但具体使用时仍须看语境和具体要说什么。