题目内容
19.We'd like to know the reason _____ he was late today.( )A. | for | B. | why | C. | when | D. | that |
分析 我们想知道他今天迟到的原因.
解答 答案为B.本题考查从句中引导词的选择.题干中空格后面是修饰和限制名词the reason的定语从句,把先行词the reason带入到定语从句,完整的定语从句是"he was late for the reason";可见for the reason在从句中充当原因状语.定语从句中关系副词why可指代reason在从句中做原因状语,所以该题用why,答案选择B.
点评 选择定语从句中的关系词,首先要理解各关系词的用法;然后找准先行词,将先行词带入到定语从句;最后根据先行词在定语从句中的作用判断关系词.
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