Turing around, I saw a white-haired man.(新教材外研必修一P2)转过身,我看到一位白发老人。【分析】本句中Turning around是现在分词短语,在句中作时间状语。相当于一个时间状语从句:When I turned around, I saw a white-haired man.【例句】Studying hard, you will pass the exam.(表条件)=If you work hard, you will pass the exam.(如果你努力学习,你就会通过考试)Being ill, he stayed at home.(表原因)=Because he was ill, he stayed at home.(因为生病了,他待在家里)Having failedmany times, he didn't lose heart. (表让步)=Although he had failed many times, he didn’t lose heart.(尽管失败了很多次,他没有灰心。) He did his homework carelessly, making many mistakes.(表结果)=He did his homework carelessly, so that he made many mistakes.(他做作业不认真,犯了很多错。) They stood there for an hour, watching the game.(表伴随)=They stood there for an hour and watched the game.(他们在那儿站着,看了一个小时的比赛。) 【总结】现在分词(短语)在句中作状语,表示时间,条件,原因,结果,方式或者伴随等。现在分词(短语)的一般式(doing/being done)表示的动作与谓语动词表示的动作同时或者几乎同时发生;现在分词(短语)的完成式(having done/having been done)表示的动作发生在谓语动词之前。