他可能已经看到那条消息了。
He could have seen the message already.
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Could英 /kʊd/|美 /kʊd/
解释
could 与 have seen 构成对过去情况的推测，意为"有可能已经（看到）"，说话者不确定事实是否发生。
He could have seen the message already.
could 与 have seen 构成对过去情况的推测，意为"有可能已经（看到）"，说话者不确定事实是否发生。