Section Ⅲ Grammar 现在分词语 境 自 主 领 悟先观察原句后自主感悟1.We saw a sleeping boy in the room.2.When people think of factories，they think of clouds of dirty smoke or of pipes pouring chemical waste into rivers.3.Other types of waste flow into our water，killing river and sea life.4.Asking around，I find many people willing to pay a little higher price for things that are friendly to the environment.5.What I'm here to say is that having worked with many environmental consultants，I know that a healthy environment and development should be possible at the same time.1.例句 1 和例句 2 中的现在分词(短语)在句中作定语，其位置不同，单个的现在分词作定语时，一般放在所修饰词的前 面 ，而现在分词短语作定语时通常放在所修饰词的后面。2.例句 3、例句 4 和例句 5 中的现在分词短语在句中作状语，其位置也是较为灵活，可以在句首，也可位于句末；例句 3 和例句 4中，现在分词表示的动作与谓语动词表示的动作同时发生，例句 5 中的现在分词表示的动作发生在谓语动词表示的动作之前。一、现在分词的形式、意义和语态现在分词的构成为“动词＋ing”。现在分词有一般式和完成式，还有主动和被动两种形式。语态形式结构用法主动语态一般式doing表示一般性的动作，或表示的动作与谓语动词所表示的动作同时或几乎同时发生完成式having done表示的动作通常发生在谓语动词表示的动作之前，特别强调动作已经完成被动语态一般式being done所表示的动作是一个正在进行中的被动动作完成式having been done表示一个被动动作发生在谓语动词所表示的动作之前Mary said angrily pointing to the notice.玛丽生气地指着布告说。Having watered the vegetables，we began to dig the ground.我们浇过菜之后，就开始挖地。This is the computer being repaired by Tom.这就是汤姆正在修的电脑。Having been criticized by the teacher，Wang Ming gave up smoking.受到老师的批评后，王明戒烟了。[即时训练 1] 单句语法填空①The building being repaired(repair) now is our school library.1②Don't keep the children working(work) on their l...
