一见此文标题有的读者会说:“英语中的人称代词和物主代词再简单不过了,何劳在此小题大作。”不错,笔者初学英语时也有同感。但记得当学生时,在一次英译汉练习中曾把Sometimes oil is mixed with rubberto improve its quality.译为:有时在橡胶中渗合些石油来提高它的质量。老师在“它的”二字下面划了红道,并附上批语:oil和rubber这里皆为单数形式,译为“它的”,是指提高石油的质量?还是提高橡胶的质量 Some readers who read the title of this article will say: “The personal pronouns and the material pronouns in English are no more simple. He is a big issue here.” Yes, when I first learned English, I also shared the same feeling. But I remember when I was a student, I used Sometimes oil is mixed with rubber to improve its quality. I sometimes translate oil into rubber to improve its quality. The teacher drew a red road under the word “It’s” and attached a comment: oil and rubber are all singular here. Translating it to “it” refers to improving the quality of oil or improving the quality of rubber.