“介词+关系代词”引导定语从句时,介词选择的问题常常是个难点,本文略作简析并附上针对练习题供参考。一、介词来自定语从句中谓语动词的习惯搭配。例如:Is that the magazine for which she paid 10 dol-lars?(pay for 付……钱)二、介词由句中关系代词的先行词决定,这时“介词+关系代词”常可用关系副词代替。例如:We’ll never forget the day on which(=when)wejoined the Youth League.三、介词由句子所表达的意思来决定。例如:The gas in which fire can burn much better iscalled oxygen.The gas with which doctors can make the pa- When “preposition + relational pronoun” guides the attributive clause, the question of preposition selection is often a difficult point. This article gives a brief analysis and attaches practice questions for reference. First, prepositions come from the habitual collocation of predicate verbs in attributive clauses. For example: Is that the magazine for which paid 10 dol-lars? (pay for pays the money) 2. The preposition is determined by the antecedent of the relative pronoun in the sentence. At this time, the preposition + relational pronoun can often be replaced by a relational adverb. For example: We’ll never forget the day on which (=when) wejoined the Youth League. 3. The preposition is decided by the meaning of the sentence. For example: The gas in which fire can burn much better iscalled oxygen.The gas with which doctors can make the pa-