be a shut-in
可数名词，常用于 be 之后，表示长期因病或体弱困居家中。
Since the accident he has been a shut-in.
事故之后，他一直闭门不出。
因病居家者；困居家中的人
shut-ins — plural of shut-in
隘谷；岩壁峡谷；因疾病或体弱而困居某处的人。；由坚硬岩层围成的狭窄河谷；一种溪流被限制在坚硬岩石狭窄河床中的岩层构造。；被关在屋内的人
a person confined to a place, typically home, because of illness or disability
因疾病或体弱而困居某处的人。
A person confined to a location, as by illness or infirmity.
由坚硬岩层围成的狭窄河谷；一种溪流被限制在坚硬岩石狭窄河床中的岩层构造。
A narrow river gorge confined by resistant rock layers; a type of rock formation in which a stream is confined to a narrow bed of resistant stone.
After breaking his leg, he became a shut-in for several months.
摔断腿后，他好几个月都困居在家里。
用法提示：此处shut-in作名词，指因病或受伤而困居家中的人。
The home-care nurse visits the elderly shut-in every morning.
家庭护理护士每天上午去探视那位困居家中的老人。
用法提示：shut-in作名词，指因体弱而不能外出的老人。
She started a volunteer program to deliver groceries to shut-ins during the winter.
她发起了一个志愿项目，在冬天为困居家中的人送食品杂货。
用法提示：shut-ins是复数形式，作名词，指一类因病弱而无法出门的人。
可数名词，常用于 be 之后，表示长期因病或体弱困居家中。
Since the accident he has been a shut-in.
事故之后，他一直闭门不出。
become 强调从能外出到困居家中的状态变化。
After the surgery she became a shut-in.
手术之后她变得闭门不出了。
复数形式 shut-ins 可泛指这一群体，前面可加冠词或复数限定词。
Volunteers look after shut-ins in the neighborhood.
志愿者们照顾社区里困居家中的病人。
grammar · medium
易错句子There are many shut-in in our neighborhood.
正确表达There are many shut-ins in our neighborhood.
shut-in 是可数名词，复数要加 -s；汉语名词没有复数词尾，容易漏掉。
grammar · medium
易错句子He doesn't like going out; he is a shut-in.
正确表达He doesn't like going out; he is a homebody.
shut-in 指因疾病或体弱而困居某处的人，不表示单纯喜欢待在家里的性格；homebody 才表示爱宅在家的人。
grammar · medium
易错句子The store was shut-in all day because of the holiday.
正确表达The store was shut all day because of the holiday.
shut-in 是名词，不能作表语形容词表示“关着的”；表示商店关门应用 shut 或 closed。
指主动选择远离人群、与世隔绝的人，重点在隐居意愿；shut-in 则强调因疾病或体弱被迫困居家中，并非自愿选择。
强调因病长期卧床、需要照料的病人身份；shut-in 强调出不了家门这一状态，未必卧床不起。
指偏好居家、不爱外出的生活习惯；shut-in 是因健康原因无法外出，带有被动意味。
shut + down
shut + out
shut + off
shut + eye
shut + -er
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