act as a chaperone (for sb)
常用 act as a chaperone 表示临时担任陪伴、监护的角色；介词 for 引出被陪伴者。
Ms. Li acted as a chaperone for the girls during the trip.
旅行期间，李女士担任女孩们的陪伴监护人。
分子伴侣；陪伴年轻人以确保其行为得体的年长者,通常是陪伴年轻女性的年长女性。；帮助其他大分子结构的非共价折叠/展开和组装/拆卸的蛋白质,但在这些结构执行正常生物功能时不出现。
An older person, especially a woman, who accompanies younger people to ensure they behave properly.
陪伴年轻人以确保其行为得体的年长者,通常是陪伴年轻女性的年长女性。
An older person who accompanies other younger people to ensure the propriety of their behaviour, often an older woman accompanying a young woman.
帮助其他大分子结构的非共价折叠/展开和组装/拆卸的蛋白质,但在这些结构执行正常生物功能时不出现。
A protein that assists the non-covalent folding/unfolding and the assembly/disassembly of other macromolecular structures, but does not occur in these structures when the latter are performing their normal biological functions.
The young woman's aunt served as a chaperone at the dance.
那位年轻女士的姑妈在舞会上充当了年长女伴。
用法提示：此处chaperone作为名词，指在社交场合陪伴年轻女子的年长女性。
Several chaperones were hired to accompany the students on the trip.
学校雇了几位伴护陪同学生旅行。
用法提示：此处chaperones为复数形式，指多名负责监护的成年人。
It is common for a debutante ball to have at least one chaperone present.
在初次社交舞会上，通常至少有一位年长女伴在场。
用法提示：此处chaperone作为名词，强调其在正式场合的监护角色。
常用 act as a chaperone 表示临时担任陪伴、监护的角色；介词 for 引出被陪伴者。
Ms. Li acted as a chaperone for the girls during the trip.
旅行期间，李女士担任女孩们的陪伴监护人。
for 后接被陪伴、监护的人或群体。
The school requires a chaperone for every group of ten students.
学校要求每十名学生配备一名监护人。
表示缺少陪伴或监护，常用于描述旧时社交礼俗。
In the past, young women rarely appeared in public without a chaperone.
过去，年轻女性很少在没有年长女伴陪同的情况下公开露面。
grammar · medium
易错句子We need chaperone for the trip.
正确表达We need a chaperone for the trip.
英语里单数可数名词表示泛指时通常要加不定冠词 a/an；chaperone 是可数名词，不能像汉语那样直接光用名词。这里指“需要一位陪同人员”，所以要用 a chaperone。
grammar · medium
易错句子Two chaperone will go with the class.
正确表达Two chaperones will go with the class.
数词 two 后面的可数名词必须用复数形式；chaperone 的复数是 chaperones。汉语名词不随数词改变形式，学习者容易漏掉复数词尾 -s。
companion 指年龄或地位相近、以陪伴为目的的人，通常没有监督职责；chaperone 则指年长者陪同年轻人，并负责监督其言行是否得体。
escort 指为保护、礼仪或社交而陪同的人，可能带有付费服务意味，但不一定监督言行；chaperone 的核心是年长者对年轻人行为得体的监督。
guardian 是法律上对未成年人或受监护者负责的人，通常是长期、法定的身份；chaperone 只是在社交场合临时陪同并监督年轻人言行的人，不是法定监护人。
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