plural

In the sentence 'I saw three cats', 'cats' is the plural of 'cat'.

(Chinese) 在句子“我看见了三只猫”中，“cats”是“cat”的复数形式。

Remember that the plural of 'mouse' is 'mice', not 'mouses'.

(Chinese) 记住“mouse”的复数是“mice”，而不是“mouses”。