those的用法
The teacher asked __who had completed their tests to leave the room as quietly as possible.A.them B.those 这题的正确答案选B。为什么不能选A？
The teacher asked __who had completed their tests to leave the room as quietly as possible.A.them B.those those 指those people ;后边是who had completed their tests 定语从句需要有先行词;those 作先行词.them不行.
代词的宾格（them等）是特指某人 已经特指的话，就没必要再用定语从句修饰他了 换句话说，定语从句的先行词，不能是代词的宾格
B those 那些人 who had completed their tests 是定语从句，修饰先行词。先行词通常是名词，也可以是代词。本题若用them 则指代不清。 简单一句话：them 通常不能充当先行词（我学英语16年，还未见过） He who does not reach the Great Wall is not a true man.
答：招生广告哟！ 参加培训肯定有好处！详情>>
答：上海市教育考试院网址：详情>>
