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While watching television,____      


  1. A.
    the doorbell rang
  2. B.
    the doorbell rings
  3. C.
    we heard the doorbell ring
  4. D.
    we heard the doorbell rings
C
解析:

试题分析:句意:当我们看电视时,门铃响了。这里while引导的是省略的从句,完整的是while we are watching television,当从句的主语与主句的主语一致时,并且从句的谓语动词有be时,可以把从句的主语与be都省去,故主句的主语也应该是we,所以排除AB;这里是hear sb do听见某人做某事。故选C。
考点:考查省略的用法。
点评:本题难度适中。为了使话说得简明扼要,英语句子中某个单词、短语甚至从句或主句都可以省去。这种省去句子某些成分而保持句子意思不变的现象,称为省略。它是高中阶段的重要的语法项目,需要考生仔细分析句子结构,来确定省略的内容。即学即练: He is rather difficult to make friends with, but his friendship,__   is more true than  any other.A.once gained           B.when to gain C.after gaining        D.while  gaining解析:A。句意:once gained =" once" it is gained。当状语从句的主语和主句的主语一致且从句中含有be动词时,可省略从句中的主语和谓语部分。
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