perhaps和possibly均有“或许、大概”之意。

perhaps : 普通用词，多用于英国，与maybe同义。He hasn't written to me recently - perhaps he's lost my address.他最近没给我写信——也许他把我的地址弄丢了。Perhaps the most important question has not been asked.或许还没有人提出最重要的问题。We plan to travel to Europe - to Spain or Italy perhaps.我们打算去欧洲旅行，也许去西班牙或意大利。possibly : 指客观上潜存着发生某种变化的可能。He may possibly decide not to come, in which case there's no problem.他可能会决定不来，这样就没问题了。"Will he come " "Possibly not."“他会来吗？”“恐怕不会。”