the form of a verb that usually ends in "ed" or "ing" and is used as an adjective分词
In the sentences "He's sleeping" and "I've already eaten", the words "sleeping" and "eaten" are both participles.在 He's sleeping 和 I've already eaten 这两个句子中,sleeping 和 eaten 两个词都是分词。
More examples
The past participle of 'cook' is 'cooked'.
In Standard American, 'gotten' is used as a past participle of 'get'.