1. 从词义角度看问题
who,whom,which,when,where,why用来引导同位语从句是保持原来疑问词的含义;它们用来引导定语从句时,不具有疑问词的含义。
2. 从搭配角度看问题
who,whom,which,when,where,why用来引导定语从句时对应性很强,如:
先行词是人,引导词用who等,而它们引导同位语从句是先行词通常是question,idea,doubt等。
六、典型例题
例1:I have no idea when he will be back.
析:he will be back意义不完整,应加什么时候的含义才能表达idea的全部内容,因此应用when引导同位语从句。
例2:I have no impression how he went home,perhaps by bike.
析:he went home意义不完整,应加如何的含义才能表达impression的全部内容,因此应用how引导同位语从句。
例3:Information has been put forward ____ more middle school graduates will be admitted into universities.(NMET2001上海)
A.while B.that C.when D.as
析:答案为B.more middle school graduates will be admitted into universities是Information的内容,且Information不在从句中作成分,所以该句为同位语从句。应将该句区别于:
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