a/an American
指某一个美国人；单数可数名词前必须加 a 或 an。
She married an American and moved to Chicago.
她嫁给了一个美国人，搬到了芝加哥。
美国英语；美式英语；美洲人；4-4-0型蒸汽机车；美国公民或国民；美国的本地人或居民
a citizen or native of the United States
美国公民或国民
A citizen or national of the United States of America.
美国的本地人或居民
a native or inhabitant of the United States
美洲的任何居民
Any inhabitant of the Americas.
在美国使用的英语
the English language as used in the United States
4-4-0轮式配置的蒸汽机车
A steam locomotive of the 4-4-0 wheel arrangement.
北美、中美或南美国家的本地人或居民
a native or inhabitant of a North American or Central American or South American country
My neighbor is an American who moved here last year.
我的邻居是去年搬到这里来的美国人。
用法提示：此处 American 为名词，指美国公民。
Many Americans enjoy watching baseball in the summer.
许多美国人喜欢在夏天看棒球。
用法提示：Americans 是 American 的复数形式，指美国国民。
She met an American at the conference and they spoke in English.
她在会议上遇到一位美国人，他们用英语交谈。
用法提示：American 作名词，意为美国人。
指某一个美国人；单数可数名词前必须加 a 或 an。
She married an American and moved to Chicago.
她嫁给了一个美国人，搬到了芝加哥。
复数形式泛指美国人整体，前面通常不加冠词。
Most Americans get fewer than eight hours of sleep.
大多数美国人睡眠不足八小时。
用于说明身份或立场，常置于句首。
As an American, she needs a visa to work in Canada.
作为美国人，她在加拿大工作需要签证。
用 of 引出族裔、出身等背景信息。
He is an American of Mexican descent.
他是墨西哥裔美国人。
grammar · medium
易错句子He is a American.
正确表达He is an American.
American 以元音音素 /ə/ 开头，不定冠词要用 an，不能用 a；汉语没有 a/an 之分，容易按拼写字母选冠词。
grammar · medium
易错句子There are many American in our city.
正确表达There are many Americans in our city.
American 作可数名词表示“美国人”时，many 后必须用复数形式 Americans；汉语名词没有复数词尾，容易漏掉 -s。
grammar · medium
易错句子She is an american.
正确表达She is an American.
American 是专有名词，首字母必须大写；汉语没有大小写，容易写成小写 american。
美国同胞
He risked his life to save a fellow American.
他冒着生命危险救了一位美国同胞。
普通美国人
The average American spends several hours online every day.
普通美国人每天上网好几个小时。
美国年轻人
Many young Americans are worried about climate change.
许多美国年轻人担心气候变化。
海外美国人
The embassy provides assistance to Americans abroad.
大使馆向海外美国人提供援助。
非裔美国人
African Americans have made lasting contributions to American culture.
非裔美国人对美国文化做出了持久的贡献。
美国原住民
She is a Native American and a tribal leader.
她是一位美国原住民，也是部落领袖。
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