Question

This is the reason ______he didn't come to the meeting.

A．in which

B．for which

C．that

D．with which

Answer 1

B

试题分析：the reason 为先行词，从句主干完整，故先行词在从句中做状语，表原因，使用关系副词why，或for which。句意：这就是他不来开会的原因。
点评：定语从句考查定语从句的考查关键在于定语从句的成分分析，如果缺少主语，宾语，表语，定语就使用关系代词，如果句子很完整，就使用关系副词when,where,why.关系副词等于介词+which。另外记住that不能引导非限制性定语从句。