1
upper-class + noun
用作定语，修饰名词。
She comes from an upper-class family.
她来自一个上层阶级的家庭。
上流社会的；上层阶级的
先理解核心含义，再看它在真实句子里的用法。
上流社会的；上层阶级的
Belonging to or typical of the highest social class; aristocratic.
She comes from an upper-class family.
她来自一个上层阶级的家庭。
社会地位高的。
Of a high social position.
贵族的。
Aristocratic.
She comes from an upper-class family and attended a private school.
她来自上流社会家庭，上的是私立学校。
The neighborhood is upper-class, with large houses and private gardens.
这个社区是上流社会的，有大房子和私人花园。
Her voice sounds upper-class, even though she grew up in a small town.
她的声音听起来像上流社会的人，尽管她在一个小镇长大。
用作定语，修饰名词。
She comes from an upper-class family.
她来自一个上层阶级的家庭。
用作表语，位于系动词后。
Their lifestyle is very upper-class.
他们的生活方式非常上层阶级。
Not this
He is an upper-class.
Use this
He is upper-class.
英语中 'upper-class' 是形容词，不能直接加冠词用作单数可数名词。中文中 '上层阶级' 可整体作名词，导致误用。正确用法是直接用形容词作表语，或用 'the upper class' 表示名词短语。
Not this
He belongs to the upper-class.
Use this
He belongs to the upper class.
名词短语 'the upper class' 表示上层阶级整体，不应使用连字符。连字符只用于复合形容词（如 'upper-class family'）。中文学习者常误将形容词的连字符形式用于名词短语。
Not this
She is upper class.
Use this
She is upper-class.
作形容词时，标准拼写为 'upper-class'，连字符连接两个词以保持修饰关系。缺少连字符虽有时被接受，但非正式；在正式写作中应保留连字符。
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通常用于名词前作定语
Dictionary facts from ECDICT, WIKTIONARY.