Section_ⅢGrammar- 现在分词作状语

　　语法图解

　　探究发现

　　① ...I saw several young people enter the waiting area looking around curiously.

　　②I stood for a minute watching them and then went to greet them.

　　③She stepped back appearing surprised ...

　　④Then Akira Nagata from Japan came in smiling, together with George Cook from Canada.

　　⑤When Darlene Coulon from France came dashing through the door ...

　　⑥Turning around, she saw an ambulance driving away.

　　⑦The old scientist died all of a sudden, leaving the project unfinished.

　　⑧Hearing the news, they jumped for joy.

　　⑨Having smoked too much, he has suffered from lung cancer.

　　[我的发现]

　　(1)黑体部分在句中作伴随状语的是①②③④⑤；作时间状语的是⑥；作结果状语的是⑦；作原因状语的是⑧⑨。

　　(2)比较句⑧和⑨可知：句⑧中动词­ing形式短语为一般式，表示动作与谓语动词同时发生；句⑨中动词­ing形式短语为完成式，表示动作发生在谓语动词之前。

　　(3)观察句①～⑨可知现在分词的逻辑主语都是句子的主语。

　　一、现在分词作状语的用法

　　现在分词(短语)在句中作状语来修饰谓语动词或整个句子，表示动作发生的时间、原因、条件、结果、方式、让步或伴随状况。

　　1．作时间状语(相当于一个时间状语从句)。

Walking in the park, she saw an old friend.