In a sports team each player has a clear role，and there are few occasions _____

题型：不详难度：来源：

In a sports team each player has a clear role，and there are few occasions _____ members are confused or uncertain of their roles

A．which

B．that

C．when

D．how

答案

C

解析

试题分析：when引导的定语从句修饰occasions。occasion意为“时刻，……的时候”，关系副词在定语从句中作时间状语。
点评：定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词，词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。解答这类题目，分析句子结构是关键。看关系词在定语从句中担当什么成分，以及实际意义来选择正确的关系词。