in the U.somebody.A.
U.S.A.通常与定冠词the连用。
She has lived in the U.S.A. for ten years.
她住在美国已经十年了。
美国
North American republic containing 50 states; achieved independence in 1776.
美国
n North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
I have always wanted to visit the U.S.A. to see the Grand Canyon.
我一直想去美国看大峡谷。
用法提示：U.S.A. 作为名词，指代国家名称。
She studied at a university in the U.S.A. for two years.
她曾在美国的一所大学学习两年。
用法提示：此处U.S.A.用作介词宾语，表示地点。
Many people around the world watch movies from the U.S.A.
世界各地许多人观看美国电影。
用法提示：U.S.A.作为名词，表示国家。
U.S.A.通常与定冠词the连用。
She has lived in the U.S.A. for ten years.
她住在美国已经十年了。
These goods are imported from the U.S.A.
这些商品是从美国进口的。
The U.S.A. is a large country with diverse cultures.
美国是一个拥有多元文化的大国。
grammar · medium
易错句子I visited U.S.A. last year.
正确表达I visited the U.S.A. last year.
国家名称 'U.S.A.' 由普通名词构成，作为专有名词时通常需要定冠词 'the'。
grammar · medium
易错句子U.S.A. culture is very diverse.
正确表达American culture is very diverse.
'U.S.A.' 是名词，不能直接用作形容词修饰名词；应使用形容词 'American' 或缩写 'U.S.' 作为修饰语。
America既可指美国，也可指美洲大陆，而U.S.A.只指美国。
United States是正式全称，U.S.A.是缩写形式，二者在正式程度上略有差异。
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