副词
中文翻译：在
同义词：
['out of', 'prior to例句：1. I will not go to the party before you arrive.（在你到达之前我不会去参加聚会。）2. The meeting was called for 3:00 p.m.', 'so we should be there before it starts.（会议定于下午3点开始，所以我们应该在它开始前到那里。）']
例句：
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1. I will not go to the party before you arrive.
在你到达之前我不会去参加聚会。
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2. The meeting was called for 3:00 p.m., so we should be there before it starts.
会议定于下午3点开始，所以我们应该在它开始前到那里。
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3. He finished his homework before dinner.
他在晚饭前完成了作业。