过 have ever done
6 phrasesHD
我去过中国
ENI've been to China
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你去过吗?
ENhave you ever been?
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我没去过
ENI've never been
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他学过汉语
ENhe has studied Chinese
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我看过这个
ENI've seen this before
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你吃过吗?
ENhave you tried it?
过 marks experience - that something has happened at least once in your life - and it contrasts sharply with 了. 我去过中国 means I have been to China at some point; 我去了中国 means I went and the trip is the news. Its negative is 没…过.