[专题辅导]怎样简化状语从句？

我们在英语写作中经常要用到状语从句，对于一个初学写作的人来说，学会简化状语从句，会使整篇文章显得条理很清楚，下面将具体讲一下各种状语从句的简化方法。

　　1．以after和before引导的状语从句的主语若与主句主语一致时，可用after和before与从句谓语动词的动名词(短语)形式构成介词短语作状语。

例如：

　　After she sang，she left the rich man's house．(简化前)

　　After singing，she left the richman's house．(简化后)

　　2．以as soon as引导的状语从句的主语若与主句主语一致时，可用on十v-ing形式简化状语从句，此时的动词为非延续性动词。例如：

　　Dr．Bethune began to operateon the wounded soldiers as soon as he arived at the village．(简化前)

　　Dr．Bethune began to operateon the wounded soldiers on arriving at the village．(简化后)

　　3．时间状语从句和条件状语从句的主语和主句主语一致时，有时可简化为不定式作状语。例如：

　　She stopped when she saw her husband．(简化前)

　　She stopped to see her husband．(简化后)

　　If you want to understand the farmers，you must go to the countryside．(简化前)

　　To understand the farmers，you must go to the country side．(简化后)

　　4．结果状语从句和目的状语从句的主语与主句主语一致时，可以简化为不定式作状语；若两者主语不一致时，则应简化为不定式的复合结构作状语。例如：

　　He was so tied that he couldn't go any further．(简化前)

　　He was too tied to go any further．(简化后)

　　I came here so that I could ask some questions．(简化前)

　　I came here(in order) to ask some questions．(简化后)

5．以when，while引导的时间状语从句和以if引导的条件状语从句，如果从句主语和主句主语一致时，可简化为现在分词状语，表示谓语动作发生在该状语动作的进行过程之中。

例如：

　　When he turned on the radio，he found it broken．(简化前)

　　When turning on the radio，he found it broken．(简化后)

　　While she was walking along the street，she was hit by a car．(简化前)

　　While walking along the street，she was hit by acar．(简化后)

　　6．原因状语从句的主语与主句主语一致时，可简化为分词短语作状语。例如：

　　Since l didn't know Chinese，I tried to speak to her in English．(简化前)

　　Not knowing Chinese，I tried to speak to her in English．(简化后)

　　要注意的是，形容词短语也可用作表示原因的状语，用以代替原因状语从句，放在句首、句末均可，但一般应加逗号。例如：

　　As he was thirsty and eager to get a little rest，he went into the tea-house．(简化前)

　　Thirsty and eager to get a little rest，he went into the tea-house．(简化后)

　　7．在时间、原因、条件等状语从句中，若从句和主句主语不一致时，可简化为分词复合结构作状语。有时也可简化为“with/without名词或代词十分词(短语)”形式作状语。例如：

　　When the film start appeared, the children got exited．(简化前)

　　The film start appearing，the children got exited．(简化后)

　　If all the work is done, you can have a rest．(简化前)

　　With all the work done，you can have a rest．(简化后)
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