1. 指代国家、城市、地球、船舶、(雌性)动物等时,一般用代词 it,但也可用she / her(带感情色彩)。如:My car’s not fast, but she does 50 miles to the gallon. 我的车不快,但每加仑油它能跑50英里。2. 当上文提到的人的性别不明时,一般用 he / him 来指代。如:Whoever told you that, he was lying. 无论谁对你那样说,他都在说谎。If a person had so much money, he would do it in another way. 要是一个人有那么多钱,他就会用另外一种方法做这事。说明:对于 anybody, everybody, nobody, anyone, someone, everyone, no one 这类性别不明的不定代词,它们可用单数 he, him 指代,也可用复数 they, them指代,用单数较正式,用复数较口语化。如:If anybody [anyone] comes, ask him [them] to wait. 要是有人来,让他等着。3. 代词we, you, they 有时可用于泛指一般人。如:We [You] ought to obey the law. 大家都应遵守法律。