act as a chaperon for sb
chaperon 指在社交场合陪同并监管未婚年轻人的成年人；act as 表示“充当、担任”。
Her aunt acted as a chaperon for the young couple at the ball.
她的姑妈在舞会上为这对年轻情侣担任陪护。
兜帽；披肩帽；（丧车马的）额饰；在社交场合陪伴或监管年轻未婚男女的成年人,常为防范不当社交或性行为；一种带披肩和尾饰的兜帽,多为装饰性或正式,后来将其面部开口套在头顶上作帽子。；置于拉灵车马额头上的装置,用于盛大葬礼
An adult who goes with and supervises young, unmarried people at social events, usually to prevent unwanted social or sexual behavior.
在社交场合陪伴或监管年轻未婚男女的成年人,常为防范不当社交或性行为
An adult who accompanies or supervises one or more young, unmarried men or women during social occasions, usually with the specific intent of preventing some types of social or sexual interactions or illegal behavior.
一种带披肩和尾饰的兜帽,多为装饰性或正式,后来将其面部开口套在头顶上作帽子。
A type of hood, often ornamental or official, with an attached cape and a tail, later worn as a hat with the face hole put over the top of the head instead.
置于拉灵车马额头上的装置,用于盛大葬礼
A device placed on the foreheads of horses which draw the hearse in pompous funerals.
The school hired several chaperons for the field trip to ensure the students' safety.
学校为这次实地考察雇佣了几名年长女伴以确保学生安全。
用法提示：这里 'chaperons' 是复数名词，指陪同并监督学生活动的年长女伴。
My aunt agreed to act as a chaperon for the prom night so that all the teenagers felt comfortable.
我姑妈同意担任毕业舞会的年长女伴，以便所有青少年都感到自在。
用法提示：这里 'chaperon' 是单数名词，指在舞会上陪伴并监督青少年的女性。
Without a chaperon, the young woman was not allowed to attend the evening party according to tradition.
按照传统，没有年长女伴陪同，这位年轻女子不得参加晚宴。
用法提示：这里 'chaperon' 是单数名词，指传统上陪同年轻女子参加社交活动的年长女性。
chaperon 指在社交场合陪同并监管未婚年轻人的成年人；act as 表示“充当、担任”。
Her aunt acted as a chaperon for the young couple at the ball.
她的姑妈在舞会上为这对年轻情侣担任陪护。
用介词 to 引出被陪同、被监管的对象，是较正式的书面说法。
In the past, an older woman was often a chaperon to young debutantes.
过去，年长的女性常常是年轻初入社交界女子的陪护人。
chaperon 为可数名词；without a chaperon 常指“无人陪同监管”，多用于描述旧时的社交规范。
Young women were not allowed to attend the dance without a chaperon.
年轻女子不被允许在没有陪护人的情况下参加舞会。
grammar · medium
易错句子She was chaperon at the school dance.
正确表达She was a chaperon at the school dance.
chaperon 是可数名词，单数形式作表语时前面必须有不定冠词 a/an；汉语名词没有冠词，容易漏掉。
grammar · medium
易错句子Two chaperon accompanied the students on the trip.
正确表达Two chaperons accompanied the students on the trip.
英语可数名词前有数词 two 时要用复数形式 chaperons；汉语名词本身不标复数，学生常保留原形。
grammar · medium
易错句子The chaperon prevented the students to leave early.
正确表达The chaperon prevented the students from leaving early.
prevent 的固定搭配是 prevent sb. from doing sth.，不能用 to 不定式；汉语“阻止某人做某事”没有 from，容易直译成 to leave。
escort 只表示陪同或护送，本身不含监督职责，常指正式场合的陪伴者或护送人员；chaperon 则特指在社交场合看管未婚年轻人的年长者，目的是防止不当交往。
guardian 是法律或正式责任意义上的监护人，长期负责被监护人的生活与权益；chaperon 只是社交场合临时陪伴并监督的成年人，不承担法律监护责任。
companion 指地位平等的同伴或旅伴，没有监督义务；chaperon 通常是年长者，对年轻人负有看管责任，两者身份关系不同。
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