maybe

Compared meaning: possibly true or likely to happen (adverb).

比较义项：也许、可能（表示某事有可能发生或成立）（副词）。

• maybe 本词

  The most common and informal of the three, typical in everyday spoken English; often opens a casual sentence and can stand alone as a short answer.

  三者中最常用、最口语化的一个，常见于日常口语，常放在句首提出随意的建议，也可单独作简短回答。

  Maybe we should just order pizza tonight instead of cooking.

  也许我们今晚该直接叫披萨，别自己做饭了。

• perhaps

  More formal and polite than maybe, common in writing and careful speech; often softens a suggestion, request, or criticism.

  比 maybe 更正式、更礼貌，常见于书面语和谨慎的口语表达，常用来使建议、请求或批评显得委婉。

  Perhaps it would be better to reschedule the meeting for next week.

  也许把会议改到下周会更好。

• possibly

  Emphasizes a lower or less certain degree of possibility; frequently follows modal verbs expressing ability or permission, especially in polite requests.

  强调可能性较低或不确定，常跟在表示能力或许可的情态动词之后，尤其用于委婉的请求中。

  Could you possibly lend me some money until Friday?

  你能不能借我一点钱，到星期五还？

Maybe, perhaps, and possibly all mean something might happen or be true. Maybe is the most informal, common in speech. Perhaps is more formal and polite, often used in writing. Possibly often follows modal verbs, making a request or statement softer and less certain.

这三个词都表示“也许、可能”，语义十分接近，学习者容易混用；主要区别在于正式程度和搭配习惯：maybe 最口语化，perhaps 更正式礼貌，possibly 常跟在情态动词后面，用来加强不确定或委婉的语气。