带有复数词尾的学科名称、国家等在意义是暗示单数概念，用单数动词。
The United States is country which has advanced science and technology.
你是家中唯一一个受过教育的人。(谓语动词用单数)
You are the only one of the family who has received education.
单数动词能与复数名词一起用吗？
三四天远远不够。（谓语动词用单数，道理同上）
数的形式如果这种主语指的是一类人动词用复数如果指的是单个人或抽象概念，动词用单数。的是单个人或抽象概念动词用单数。
With such a subject, the choice between a plural or a singular verb depends on whether the adjective refers to a group of people or to a particular person or an abstract quality.
数的形式如果这种主语指的是一类人动词用复数如果指的是单个人或抽象概念，动词用单数。的是单个人或抽象概念动词用单数。
With such a subject, the choice between a plural or a singular verb depends on whether the adjective refers to a group of people or to a particular person or an abstract quality.
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