had owned before
Ever owned
we had have，but it just the past
曾经拥有[网络] Used to be; There have been; There used to be; used to have; There was;[例句]我曾经有一个去纽约学习的机会。I had an opportunity to go to New York and study
had something before,
比较地道的说法是I could have had it.或者直接说I had it.
Happened but that's just once
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樱子2200
