perhaps

maybe, perhaps, possibly, probably

这些副词均有“或许、大概”之意。
maybe: 普通用词，美国英语多用，指某事也许如此，含不能确定意味。
perhaps: 普通用词，多用于英国，与maybe同义。
possibly: 指客观上潜存着发生某种变化的可能。
probably: 一般指根据逻辑推理，估计有发生的可能，把握性较大，语气比possibly强。

副词 perhaps:

1. by chance
   同义词：possibly, perchance, maybe, mayhap, peradventure

1. Yes, perhaps I'm wrong there.
   是的，在这点上也许我错了。
2. As she's been ill perhaps she'll need some help.
   她由於生病可能需要些帮助。
3. Perhaps this book will prove to be of some use to you in your studies.
   也许这本书会对你的研究有用处。
4. Such a mistake would perhaps lead to disastrous consequences.
   这样一种错误可能导致灾难性的后果。
5. Perhaps I am wrong, but I think she is near forty.
   也许我错了，但是我想她快四十岁了。

per.haps

adv.（副词）
Maybe; possibly.
可能；或许

来源：
From Middle English perhap
源自 中古英语 perhap
per [by] from Latin * see per
per [通过] 源自 拉丁语 *参见 per
hap [chance] * see hap
hap [机会] *参见 hap