perhaps
词根词缀：
haphazard adj. 偶然的；无计划的
hap 机会；运气 + hazard 冒险 → 运气和冒险都是偶然的、没有计划的 → 偶然的；无计划的
hapless adj. 运气不好的
hap 机会；运气 + less 无…的 → 无运气的 → 运气不好的
happen v. 发生
happ〔= hap〕机会；运气 + en 使… → 使成为机会 → 发生
happy adj. 幸运的；幸福的
happ〔= hap〕机会；运气 + y …的 → 有运气的 → 幸运的
mishap n. 不幸，灾祸
mis 坏 + hap 机会；运气 → 坏运气 → 不幸
perhaps adv. 也许，可能
per 自始至终 + hap 机会；运气 + s → 全由机会〔决定〕→ 也许
数据来源：新东方英语词汇速记大全
相关例句：
Perhaps I had misjudged him, and he was not so predictable after all
也许我看错了他，毕竟他不是可以让人一眼看透的人。
Some governments have been victims and perhaps unknowing accomplices in the bank's activities.
一些政府成为了银行活动的受害者，而且可能在不知不觉中做了其帮凶。
Perhaps you are too acquiescent.
可能你太顺从了。
Perhaps he's ill.
他也许病了。
In the end they lose millions, perhaps billions
最后他们输掉几百万，或许是几十亿。
They'd come soon, perhaps when the radio broadcast was over.
他们很快就会来，可能在广播结束之后。