●用法拓展
①现在分词短语在句中作状语,可以表示伴随、结果,相当于一个并列句,因此可以和and连接的并列句转换,也可和with复合结构转换。
He went out,leaving the lights on.(结果)
=He went out,with the lights on.
=He went out and left the lights on.
他出去了,灯开着。
He lay in bed,reading a novel.(伴随)
=He lay in bed and read a novel.
他躺在床上读小说。
②现在分词短语在句中作状语还可以表示时间、原因、条件、让步等。其结构相当于一个状语从句。
Finishing the work,he left his office.(时间)
=After he finished the work,he left his office.
工作完成之后他离开了办公室。
Not knowing the answer,he kept silent.(原因)
=Because he didn't know the answer,he kept silent.
因为不知道答案,他保持沉默。
Working hard at your lessons,you'll succeed.(条件)
=If you work hard at your lessons,you'll succeed.
如果你努力学习,就一定能成功。
Working hard as he did,he was still unable to earn enough money to buy a car.(让步)
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