助动词
中文翻译：已经
同义词：
['already', 'already been', 'have been']
例句：
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1. I have been to the beach before.
我以前去过海滩。
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2. She has already decided to go to the concert tonight.
她已经决定今晚去看音乐会了。
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3. The movie was released in 2001 and has been a box office hit ever since.
这部电影于2001年上映，自那以后一直是票房冠军。