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infection什么时候用复数形式?还是说话者的错误?

teacher

母语人士的回答

Rebecca

Number of infections数量the number of infected正确表达。 Infection包括单数和复数形式。 Infection的复数形式可以用来谈论几种疾病。就像当我们谈论葡萄球菌感染或mrsa感染时一样。 Infected是指谈论感染者时使用的词。这里有些例子。例子: He has a tooth infection. (他有牙齿感染。)示例: Here are thousands of people infected with this new virus. (这里有成千上万的人感染了新病毒。)示例: She almost died due to multiple infections in her body. (她死于体内多次感染。)

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12/21

通过测验完成表达式!

感染数量超过73,000。