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问题描述：
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become famous
是“变得有名”还是“因……而出名”?
那be famous for 和 be famous at、be famous as 都有什么区别?
请帮我一下.
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答
是变得有名...
be famous for 是因……而出名...
例：Beijing is famous for the Great Wall.
be famous at 应该也是因……而出名
be famous as 是变得像……一样有名