高中英语Unit 05 B（课堂PPT）

1、1Discovering useful words and expressions.Ex. 1 the questionnaire alongside The scientists were evaluating the experiment. made my way has potential appointed equipment diagramEx. 2The eruption of Mount Vesuvius in 78 AD took the people of Pompeii by surprise. They had always known that the mountain

2、 was a _ but it had been quiet for so long that nobody saw it as a threat. When the volcano finally did _ , it was so quick and so severe that the town was soon covered in _ and _. A writer called Pliny, who was there during the _, described how lava was thrown into the air like a _. After it fell t

3、o earth, it turned into _ of lava which travelled down the mountain faster than people could run away. It was an _ disaster for those who could not escape in time. Many of the wooden houses and bungalows in Pompeii were _ _, but the stone houses remained under the ash until they were rediscovered du

4、ring the 20th century. take by surprise 出其不意出其不意/毫不预示地攻击毫不预示地攻击, 捕获捕获 volcanoeruptashfountaineruptionwaveslavaabsoluteto the groundburned2Ex. 3 A storm with very fast winds that moves over water. This is a very violent storm consisting of air that spins very quickly and cause a lot of damage. The wi

5、nd is blowing so hard that it is described in Chinese as “too much wind”. A mountain develops a large hole through which lava is at times forced out. An area which is usually dry has become covered in water. A sudden shaking of the earths surface, which may be violent enough to cause great damage. A

6、 long period of dry weather when there is not enough water for plants or animals to live. A situation when people have little or no food for long. When a machine which flies through the air lands unexpectedly possibly killing some of even all of the people on board. A storm with thunder and lighteni

7、ng. A storm with strong winds and a lot of snow. Uncontrolled flames that burn and destroy things. Fighting between two or more countries.hurricanetornadotyphoonvolcanofloodearthquakedroughtfamineplane crashthunderstormsnowstormfirewar3Discovering useful structures.Ex. 1Having collected and evaluate

8、d the information, I help other scientists.Having worked hard all day, I went to bed early.Having earlier collected special clothes from the observatory, we put them on beforeHaving studies volcanoes now fro many years, I am still amazedEx. 21. Having taken 2. Having given 3. Having bought4. Having

9、spent 5. Having arrivedEx. 3 Waking up in the middle of the night, she was her room was as bright as day. Having stopped the car, we found ourselves trapped in thick fog and couldnt see clearly ahead. Having spent all night reading the documents, I was very tired the next day. Having never seen a ra

10、inbow before as a child, he was very excited.Ex. 4 arriving;Standing (there);Having taken; Having rested;Hearing4Review the use of Review the use of ing forming formUnit 5 Grammar5Looking carefully at the ground, I made my way to the edge of the crater.Having experienced quite a few earthquakes in H

11、awaii already, I didnt take much notice.The ing form used as an adverbialHaving + past participle (the perfect -ingform) referring to an action that took place before the time expressed by main verbExamine the sentences below and tell the similarity and difference between these two sentences.6 The i

12、ng form can be used as an adverbial in a sentence to give information about time, reasons or results. We use the construction having+past participle to refer to an action that took place before the time expressed by the main verb.7用法用法例句例句时间时间 Walking along the street, I met Mary. (= While I was wal

13、king along the street, I .)在街上走在街上走的时候，我遇到了玛丽。的时候，我遇到了玛丽。作状语作状语8用法用法例句例句原因原因 Being tired, I stopped to take a rest.(= Because I was tired, .)因因为疲倦，我停下来休息。为疲倦，我停下来休息。条件条件 Turning to the left, you will find the school. (= If you turn to the left, .)向左走，你就会找到那所向左走，你就会找到那所学校。学校。9用法用法例句例句让步让步 Knowing whe

14、re I live, he never comes to see me.(= Though he knows where I live, .) 尽管他知道我的住处，尽管他知道我的住处，但从不来看我。但从不来看我。10用法用法例句例句伴随伴随 I stood there, waiting for her. (= , and waited for her.) 我站在那儿等我站在那儿等她。她。结果结果 It rained heavily, causing severe flooding in the area.(= It rained heavily so that it caused severe

15、 flooding in the area.)在这个地方雨在这个地方雨下的如此大，以致引发了洪灾。下的如此大，以致引发了洪灾。112. ing形式的完成式形式的完成式句句型型主主动动Having +p.p. , 主语主语+谓语谓语被被动动(Having been) +p.p. , 主语主语+谓语谓语用法用法ing形式的完成式所表示的时间在谓形式的完成式所表示的时间在谓语动词之前语动词之前 表示被动可直接用过去分词表示被动可直接用过去分词例句例句Having finished my work, I went home. (= After I had finished my work, )工作做工

16、作做完之后，我就回家了。完之后，我就回家了。123. 使用使用- ing形式需注意的几个问题形式需注意的几个问题V-ing(短语短语) 作状语时作状语时, 其逻辑主其逻辑主语必须与句子的主语一致。语必须与句子的主语一致。如果如果不一致，必须用独立主格结构来不一致，必须用独立主格结构来表示，也就是在表示，也就是在V-ing前面加上前面加上它的逻辑主语。它的逻辑主语。 13My wife had a long talk with Sally, explaining why she didnt want the children to play together. 我妻子与莎莉谈了很长时间我妻子与莎

17、莉谈了很长时间, 解释解释 她为什么不想让孩子们在一起玩。她为什么不想让孩子们在一起玩。14(explaining是句子主语是句子主语my wife做的动做的动作作, 它们之间是主动关系它们之间是主动关系, 即即explaining的逻辑主语的逻辑主语, 就是句子的主语就是句子的主语mywife。)The train having gone, we had to wait another day.（the train逻辑主语逻辑主语 + having gone 即为独立主格结构）即为独立主格结构）15V-ing短语做状语时，前面可以加上短语做状语时，前面可以加上连词或介词，但是连词或介词，但是

18、V-ing短语和句子短语和句子之间不能用并列连词之间不能用并列连词(如如but，and)，因为并列连词接的是两个并列成分，因为并列连词接的是两个并列成分，而而V-ing短语只是全句的一个状语部短语只是全句的一个状语部分，分， V-ing和主句之间可用逗号。和主句之间可用逗号。16例如例如:误误: Having been told many times, but he still couldnt understand it.正正: He had been told many times, but he still couldnt understand it. 或或 Having been tol

19、d many times, he still couldnt understand it.17-ing的一般式和完成式都可以的一般式和完成式都可以表示先后接连发生的动作。表示先后接连发生的动作。在可能引起误解的场合应该用在可能引起误解的场合应该用完成式表示先发生的动作。完成式表示先发生的动作。18例如例如:Opening the drawer，he took out his wallet. (=He opened the drawer and took out his wallet.)他打开抽屉，拿出钱包。他打开抽屉，拿出钱包。Coming into the room, he put down

20、 his bag. (=He came into the room and put down his bag.)他走进房间，放下提包。他走进房间，放下提包。19Having brushed his teeth, Mr. Brown came downstairs for breakfast.布朗先生刷过牙布朗先生刷过牙, 就下楼来吃早饭。就下楼来吃早饭。(此句如写成此句如写成: Brushing his teeth, Mr. Brown came downstairs for breakfast. 可能指可能指 “边刷牙边刷牙, 边下边下楼楼” 。) 20Not fearing the fir

21、e, the child touched and got a finger burnt. 小孩儿不知道小孩儿不知道 怕火，用手去摸，把手指烫了。怕火，用手去摸，把手指烫了。Not knowing how to find the subway, I asked a policeman for help. 我不知我不知怎样找到地铁，就去找警察帮忙怎样找到地铁，就去找警察帮忙。 V-ing的否定形式是在其前加上的否定形式是在其前加上 not, never等否定词构成。等否定词构成。211.When they heard about the volcano they ran down to the v

22、illage. Rewrite the sentences using the present or the perfect ing form of the underlined verbs. The first two have done for you.Hearing about the volcano, they ran down to the village.222. After the scientists had studied the information they predicted that the lava would flow through the village.H

23、aving studied the information, the scientists predicted that the lava would flow through the village.After studying3. Because I had experienced earthquakes before, I wasnt frightened.Having experienced earthquakes before,I wasnt frightened.234. When she woke up in the middle of the night she saw her

24、 room was as bright as day. Waking up in the middle of the night she saw her room was as bright as day. 5. As soon as we had stopped the car, we put on our protective clothing.Having stopped the car, we immediatelyput on our protective clothing. 246. As I came out of my house, I saw the volcano erup

25、ting.Coming out of my house, I saw the volcano erupting.7. As I had never seen a volcano erupting before, I was very excited.Never having seen a volcano erupting before, I was very excited.251. The wild flowers looked like a soft orange blanket _ the desert. (2006 湖南卷湖南卷)A. covering B. covered C. co

26、ver D. to cover高考链接高考链接262. Dont sit there _ nothing. Come and help me with this table. (2006 湖北卷湖北卷) A. do B. to do C. doing D. and doing273. The glass doors have taken the place of the wooden ones at the entrance, _ in the natural light during the day. (2007 天津卷天津卷) A. to let B. letting C. let D. having let 284. Peter received a letter just now _ his gran