The expression "They are pants" is indeed correct. It translates to "它們是褲子" in Chinese, meaning these items are pants.In English, since pants typically refer to items that cover both legs, the plural form is used. When discussing characteristics of pants, the plural pronoun "they" is employed rather than the singular "it." For instance, if you want to ask how much a pair of pants costs, you would say "How much are the pants?" If the pants cost 50 yuan, you would express it as "They are 50 yuan." The subject being plural necessitates the use of the plural verb form "are."Understanding this grammatical rule helps in correctly forming sentences when talking about pants or any other plural items in English. For example, if you have a pair of blue pants and you want to say they are 50 yuan, you would structure the sentence as "They are 50 yuan."This rule applies broadly to other plural items as well. If you have a pair of shoes, a set of keys, or any other plural noun, the same principle holds true. The plural subject always requires the plural verb form "are."Therefore, the correct usage of "They are pants" not only adheres to grammatical rules but also accurately conveys the intended meaning in English.