1
officiate at sth
at 后接活动或场合，表示在该场合担任主持或裁判。
A local judge officiated at the wedding ceremony.
一位当地法官主持了婚礼仪式。
主持（仪式）；担任司仪
officiates — third person singular of officiate
先理解核心含义，再看它在真实句子里的用法。
主持（仪式）；担任司仪
act in an official capacity in a ceremony or religious ritual, such as a wedding
A local judge officiated at the wedding ceremony.
一位当地法官主持了婚礼仪式。
履行某项职务的职责
To perform the functions of some office.
担任裁判
To serve as umpire or referee.
officiate
Base
原形
officiates
3rd person
第三人称单数
officiating
-ing
现在分词
officiated
Past
过去式
officiated
Past participle
过去分词
She often officiates at local wedding ceremonies.
她经常在当地婚礼上担任司仪。
A local judge officiated the ceremony last Saturday.
上周六，一位当地法官主持了这场仪式。
He has officiated at many official events over the years.
多年来，他主持过许多官方活动。
officiate 常用于正式场合，表示在婚礼等仪式上主持，或在比赛中担任裁判；与 at 搭配表示‘在某活动中任职’。
A local coach will officiate the basketball game tomorrow.
一位本地教练明天将为这场篮球比赛担任裁判。
She has officiated three tennis matches this week.
她这周已经为三场网球比赛担任了裁判。
The man officiating the soccer final waved a yellow card.
为足球决赛执法的那个人出示了一张黄牌。
at 后接活动或场合，表示在该场合担任主持或裁判。
A local judge officiated at the wedding ceremony.
一位当地法官主持了婚礼仪式。
在美式英语中，officiate 可直接及物接活动；英式英语更常用 officiate at。
She will officiate the basketball game.
她将担任这场篮球比赛的裁判。
as 后接职务或角色，强调以某种身份履行职责。
He officiated as chairperson of the annual meeting.
他担任年会的主席。
Not this
The officiate made a bad call during the game.
Use this
The official made a bad call during the game.
officiate 是动词，不能直接作名词表示“裁判”；表示比赛中的裁判人员应使用名词 official。
Not this
The CEO officiated the shareholders' meeting.
Use this
The CEO presided over the shareholders' meeting.
officiate 只用于主持仪式、宗教活动或担任体育比赛的裁判，不能表示“主持会议”；普通会议应使用 preside over（或 host）。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
主持婚礼
My uncle officiated at our wedding.
我叔叔主持了我们的婚礼。
主持葬礼
The priest officiated at the funeral.
牧师主持了葬礼。
担任裁判
He officiated as referee in the final.
他在决赛中担任裁判。
主持仪式
She officiated at the opening ceremony.
她主持了开幕式。
担任比赛的裁判
She was chosen to officiate at the championship match.
她获选担任冠军赛的裁判。
Use officiates naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 office（职务）+ ate，像在正式场合“担任职务”主持仪式、当司仪或裁判。
语域：formal 常见场景：婚礼、宗教仪式、体育比赛、正式职务场合 officiate 比较正式，通常用于主持婚礼、宗教仪式或在正式场合行使职务，也常见于体育比赛中担任裁判；日常口语中较少使用。
同韵词为 initiate、vitiate、propitiate（重读元音 /ɪ/ 及之后均含 /ʃieɪt/）。appreciate、associate、negotiate 虽同以 -iate 结尾，但重读元音不同，发音不同，不要误用。
Dictionary facts from ECDICT, WIKTIONARY.