传统英语语法教科书中,一般多把定语从句的作用描述为对主句或主句中的名词、代词进行修饰或者限制,很少提到定语从句和主句中的逻辑关系问题。可是,我们在科技英语学习中发现,隐含逻辑关系的定语从句确实不少。本文拟简析三组定语从句中隐含逻辑关系的情况,供广大读者参考。 In traditional English grammar textbooks, the role of the attributive clause is often described as modifying or restricting the nouns and pronouns in the main clause or the main clause. Logic relations between the attributive clause and the main clause are rarely mentioned. However, we have found in scientific English learning that there are indeed attributive clauses implying logical relations. This article is intended to provide a brief analysis of the implied logic in the three sets of attributive clauses for the readers’ reference.