I attended the wedding ceremony of my best friend yesterday.

opening ceremony[英][ˈəupəniŋ ˈseriməni][美][ˈopənɪŋ ˈsɛrəˌmoni]
开幕式;

例句:
1.
A return of the opening ceremony could help.
开幕式的重新上演或许能有所帮助。

2.
The opening ceremony in beijing搜趣网 was a statement in that conversation.
北京奥运会的开幕式正是这种对话的一份声明

wedding ceremony[英][ˈwediŋ//www.souquanme.com; ˈseriməni][美][ˈwɛdɪŋ ˈsɛrəˌmoni]
n.婚礼; 结婚典礼;

例句:
1.
But katz noted that the role of the parents in a same-sex wedding ceremony is often different than heterosexual weddings.
但卡茨也指出，同性婚礼中父母的角色通常有别于异性婚礼。

2.
A grand wedding ceremony of swedish crown princess victoria and her personal trainer, mr daniel westling was held in the cathedral in stockholm on saturday.
瑞典王储、维多利亚公主与她的私人教练丹尼尔？韦斯特林于上周六在斯德哥尔摩大教堂举行了盛大婚礼

ceremony ['seriməuni]
n.
典礼，仪式(如婚礼、宗教仪式等)
礼节，礼仪
礼貌，有礼貌的行为，彬彬有礼
刻板；客套，客气
拘泥于礼节，拘谨；俗套；虚礼；繁文缛节
[废语]不祥之兆；预兆
造句：
1.The opening ceremony was a fine spectacle.
开幕式典礼是个壮观的场面。
2.They uncovered the statue at the beginning of the ceremony.
仪式开始时， 他们揭去了塑像的罩子。
3.Our headmaster rattled on for at least two hours at the opening ceremony.
我们的校长在开学典礼上唠唠叨叨地讲了至少两个小时。