内容正文:
Book2 Unit4 Stage and screen
Using language
Learning Aims:
Master the basic form of adverbial of present participle
Use it flexibly in the context of the theme
课前预习
现在分词是非谓语动词的一种,兼有动词和形容词的特征,在句中可作表语,定语,宾语补足语和状语,一般表示进行或主动的意思。
现在分词用作状语时,其逻辑主语必须与句子的主语一致,现在分词所表示的动作和句子的主语是主动关系。
【感知语法规律】
①Turning around,I saw a car driving up.
②Having sent her child to bed,she began to read the newspaper.
③Not knowing his telephone number,I couldn’t get in touch with him.
④He came running back to tell me the news.
⑤Having been shown around the factory,they were very happy.
【自主发现】
1.句①为-ing形式的一般式 作状语。当-ing形式的动作与谓语动词的动作同时发生或几乎同时发生时,用一般式。
2.句②为-ing形式的完成式 作状语。当-ing形式的动作先发生,而谓语动词的动作后发生时,用完成式。
3.句③为-ing形式的否定式 作状语。-ing形式的否定式是在它的前面加not。
4.句④为-ing形式的主动式。表示非谓语动词和句子的主语(分词的逻辑主语)之间为_____________关系。
5.句⑤为-ing形式的被动式。表示非谓语动词和句子的主语(分词的逻辑主语)之间为_____________关系。
【即时训练】用所给词的适当形式填空
①The cooling wind swept through our bedroom windows, (make) air conditioning unnecessary.
② (work)for three hours,he took a rest.
③ (spend)nearly all our money,we couldn’t afford to stay at a hotel.
④ (see)nobody at home,he decided to leave them a note.
⑤ (tell)for several times,he still couldn’t understand the rules.
课内探究
一、动词的-ing形式作状语可以表示时间、原因、条件、结果、让步、方式或伴随情况等。
1.时间状语
动词的-ing形式作时间状语,相当于一个时间状语从句,所表示的动作与主句的动作一般是同时发生,有时可由连词when,while,after引出。
Hearing the result(=When I heard the result),I couldn’t help jumping.
听到这个结果,我不禁跳了起来。
Having made full preparations(=After we have made full preparations),we are ready for the examination.做了充分的准备之后,我们准备好参加考试。
(1)分析句式 Seeing the police, he made a run for the exit. 一看到警察,他就朝出口奔去。
分析:see的动作是由其逻辑主语“_____”发出,与句子的主语_____一致,且构成____关系,所以用现在分词。
(2)将下面的时间状语从句改写成简单句。When he walked out of the room, he saw a dog.
______________________________________________________________________
2.原因状语 可以与as/since/because等引导的原因状语从句转换。
Being so excited(=As he was so excited),he couldn’t go to sleep that night.
由于非常激动,那晚他无法入睡。