高中英语必修四-Unit4--V-ing形式作状语--上课专用ppt课件.ppt

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1、语态语态时态时态主动语态主动语态被动语态被动语态一般式一般式完成式完成式(not) doing(not) being done(not)having done(not)having been done1.V-ing 形式由形式由 “doing” 构构成成, 否定形式是否定形式是 “not doing”. 定义：说明事物发生的时间，原因，定义：说明事物发生的时间，原因，条件，方式或伴随，地点，结果，让步，条件，方式或伴随，地点，结果，让步，程度等情况的词叫做状语。程度等情况的词叫做状语。 状语可以由副词，短语以及从句来状语可以由副词，短语以及从句来担任。担任。Because I catch a

2、cold, I dont feel like going school tomorrow.V-ing 作状语作状语 的的用法用法即：即：V-ingV-ing短语在句子中作短语在句子中作状语，可以表示时间，原状语，可以表示时间，原因，结果，条件，让步，因，结果，条件，让步，方式或伴随动作等。方式或伴随动作等。用作状语的用作状语的动词动词-ing 形式形式，此时可叫做此时可叫做“现在分词现在分词”。我叫天蓬元帅，我叫天蓬元帅，乳名乳名“小八戒小八戒”。亲。亲。给哥取个小名儿。给哥取个小名儿。 例如：例如： I ran out of the house shouting. 我喊叫着跑出屋来。我喊叫着

3、跑出屋来。 Sally was lying in bed crying. 莎莉躺在床上在哭。莎莉躺在床上在哭。齐读齐读:1.动词动词-ing 形式作状语时形式作状语时,通常表通常表示主语示主语正在进行正在进行的另一动作的另一动作,来对谓语来对谓语表示的主要动作加以修饰或作为陪衬。表示的主要动作加以修饰或作为陪衬。I got home, feeling very tired. 重点重点:现在分词作状语现在分词作状语,相当于相应的状语从句。相当于相应的状语从句。考点：如何将考点：如何将现在分词现在分词转换为转换为状语状语从句！从句！1). Walking in the street, I saw

4、a beautiful girl.2). Having turned off the TV set, he began to go over Chinese.时间时间When I was walking in the street，时间时间After he had turned off the TV set,1.作时间状语作时间状语,相当于时间状语从句。相当于时间状语从句。 常用常用引导词：引导词：when, while, as ,once, since, before, after, till, until, as soon as 等等 。1). Being too young, he co

5、uldnt join the army.2). Not knowing her address, we cant get in touch with her.原因原因Because he was too young, 原因原因As we dont know her address，2. 作原因状语，作原因状语，相当于原因状语从句相当于原因状语从句常用引导词：常用引导词：because, since, as 1). Using your head, youll find a good way.2). Working hard, youll surely succeed.条件条件If you us

6、e your head, 条件条件If you work hard，3. 作条件状语，作条件状语，相当于条件状语从句相当于条件状语从句 条件状语从句条件状语从句 常用引导词：常用引导词：if, unless, 1). She stood there waiting for Tom.2). He came running back to tell me the news. 伴随伴随= She stood there and waited for Tom.方式方式4. 作方式状语或伴随状语，作方式状语或伴随状语， 相当于并列句相当于并列句“and”.1). The child fell, stri

7、king his head against the door and cutting it.结果结果so his head stroked against the door and cut. “所以所以”常用引导词：常用引导词：so , so that 等。等。5. 作结果状语作结果状语,相相当于结果状从。当于结果状从。1). Knowing all this, the guard didnt let me enter the lecture hall.让步让步Although he Knew常用引导词：常用引导词：although ,though 等。等。5. 作让步状语作让步状语,相相当于

8、让步状从。当于让步状从。注意：注意： 1.当现在分词所表示的动作发生在谓语动当现在分词所表示的动作发生在谓语动词动作之前时，应使用完成式：词动作之前时，应使用完成式： Having finished his homework, he rushed out to play basketball.2. 当现在分词与句子的主语之间存在当现在分词与句子的主语之间存在着逻辑上的被动关系时，应使用被动式着逻辑上的被动关系时，应使用被动式：Being helped by Tom, she will learn English well.having donebeing done3. 当现在分词的被动式的动作

9、发生在谓语当现在分词的被动式的动作发生在谓语动词动作之前时，被动式应使用完成式：动词动作之前时，被动式应使用完成式：Having been translated into many languages, the book was widely read all over the world.having been done （1） Walking through the park, we saw lots of flowers. （正确）（正确） walking 是是we的动作的动作 （2）Walking through the park, the flowers looked nice. (

10、错误错误) （3）Standing on the tower, we could see the whole city. (正确正确) （4）Standing on the tower, the whole village could be seen. (错误错误)4. 现在分词作状语时，它的逻辑主语必现在分词作状语时，它的逻辑主语必须与主句的主语是一致的。须与主句的主语是一致的。5. 独立主格结构：独立主格结构：Spring coming on, the trees turned green.Her mother being ill, she had to look after her at

11、 home.Time permitting, well visit the Great Wall.He guiding the blind man, they walked slowly across the street.6. 固定结构：固定结构：Judging from his appearance, he must be very rich.Generally speaking, his answer is right.Considering everything, they did a good job.exercise 改写下列句子改写下列句子1.While she was read

12、ing the newspaper, her mother was nodding from time to time. = _ the newspaper, her mother was nodding from time to time.2. She sat at the desk and did her homework. = She sat at the desk_.While readingdoing her homework 改写下列句子改写下列句子1.While she was reading the newspaper, her mother was nodding from

13、time to time. = _ the newspaper, her mother was nodding from time to time.2. She sat at the desk and did her homework. = She sat at the de_.While readingdoing her homeworkl3. Being so poor in those days, we couldnt afford to send the boy to hospital. =_, we couldnt afford to send the boy to hospital.As we were so poor in those days4.Even if I take a taxi, I will still be late for the meeting. =_ a taxi, I will still be late for the meeting. 5.The parents died and left him an orphan. =The parents died, _.Even if takinglleaving him an orphan 42期英语周报期英语周报