May is usually followed by an infinitive without ‘to': may通常后接不带to 的不定式: It may rain. 可能会下雨。
Sometimes may is used without a following infinitive: 有时may 后面不接不定式: I'd like to make one or two comments, if I may. 如果可以的话,我想提一两个意见。
May does not change its form, so the third person singular form does not end in ‘-s': may没有词形变化,所以第三人称单数形式的结尾没有s: He may arrive this afternoon. 他可能今天下午到。
Questions and negatives are formed without ‘do': 疑问和否定形式不用do: May I make a suggestion? 我能提个建议吗? She may not understand. 她可能不明白。
The negative form may not is sometimes shortened to mayn't by British speakers of English, but it is not common. 有时英国人把否定形式may not 缩写成mayn’t, 但并不常见。
May has no participles and no infinitive form. may没有分词和不定式形式。
There is no past tense, but may have followed by a past participle can be used for talking about past possibilities: may没有过去式,但may have 后跟过去分词可用来谈论过去的可能性: She may have changed her mind and decided not to come. 她可能已经变卦了,决定不来了。 When indirect speech is introduced by a verb in the past tense, might is used as the past tense of may: 当动词过去式引导间接引语时,might 用作may 的过去式: I asked if I might see the paintings. 我问是否我可以看一下画作。
There is no future tense, but may is used for talking about future possibilities: may没有将来式,但可用来谈论将来的可能性: I may go to London next week. 我下周可能去伦敦。