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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Unit,5,The power of nature,Learning about,Language,1.Review the useful expressions of the text.,2.To check up the Exx.of learning about,Language.,3.To learn the using of,v.,-ing,form.,1,_,n,火山,2,_,vi,.(,指火山,),爆发；突然发生,_,n,火山爆发；,(,战争等,),爆发,3,_,adv,.,在旁边；沿着边,prep,.,在,旁边；沿着,的边,4,_,vt,.,任命；委派,_,n,约定；任命,5,_,vt,.,评估；评价；估计,_,n,评估,volcano,erupt,eruption,alongside,appoint,appointment,evaluate,evaluation,6,_,n,波浪；波涛,vi.,波动；起伏；挥手,7,_,adj,.,绝对的；完全的,absolutely,adv,.,绝对地,8,_,n,一套外衣；套装；,vt,.,适合；使适宜,suitable,adj,.,合适的,9,_,n,潜在性；可能性；潜能,adj,.,可能的；潜在的,10,_,adj,.,实在的；实际的,actually,adv,.,实际地,wave,absolute,suit,potential,actual,Part 2 Comeplete the paragraph with the words in,the box in the correct forms.,burn to the ground absolute volcano eruption,wave fountain ash lava erupt,The eruption of Mount Vesuvius in 79AD took the,people of Pompeii by surprise.They had always,known that the mountain was a _ but it had,Learning about language,volcano,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_.,erupt,ash,lava,A writer called Pl,iny,who,was there during the _,described how lava was thrown into the air like a _,_.After it fell to earth,it turned into _ of lava which travelled,down the mountain faster than people could run away.It was an _ disater,ster,for those who could not escape,in time.Many of the wooden houses and the bungalows in Pompeii were _,_,but the stone houses remained under the ash until they were rediscovered during the 20th century.,absolute,burned to the ground,fountain,waves,eruption,Grammar,Looking carefully at the ground,I made,my way to the edge of the crater.,The,-,ing,form used as an adverbial,clause,Having experienced quite a few earthquakes in Hawaii already,I didnt take much notice.,Having+past participle(the perfect,-,ing,form)to refer to an action that took place before the time expressed by main verb.,小结,-,ing,形式的用法,1.,-,ing,形式作状语,用法,例句,时间,Walking along the street,I met Mary.,在街上走的时候，我遇到了玛丽。,(=While I was walking along the street,),用法,例句,原因,Being tired,I stopped to take a rest.(=Because I was tired,),因为疲倦，我停下来休息。,条件,Turning to the left,you will find the school.(=If you turn to the left,),向左走，你就会找到那所学校。,用法,例句,让步,Knowing where I live,he never come to see me.,尽管他知道我的住处，但从不来看我。,(=Though he knows where I live,),用法,例句,伴随,I stood there,waiting for her.,(=,and waited for her.),我站在那儿等她。,结果,It rained heavily,causing severe,flooding in the area,.,(=It rained heavily so that it caused severe flooding in the area.),在这个地方雨下得如此大，以致引发了洪灾。,2.,ing,形式的完成式,句型,主动,Having+,p.p,.,主语,+,谓语,被动,(Having,been)+,p.p,.,主语,+,谓语,用法,-,ing,形式的完成式所表示的时间在谓语动词之前,表示被动可直接用过去分词,例句,Having finished my work,I went home.(=After I had finished my work,),工作做完之后，我就回家了。,3.,使用,-,ing,形式需注意的几个问题。,分词,(,短语,),作状语时，其逻辑主语必须与句子的主语一致。如果不一致，必须用独立主格结构来表示，也就是在分词前面加上它的逻辑主语。,My 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，解释她为什么不想让孩子们在一起玩。,(,现在分词,explaining,是句子主语,my wife,做的动作，它们之间是主动关系,即explaining的逻辑主语就是句子的主语my wife。),The train,having gone,we,had to wait another day.,（the train逻辑主语+having gone,即,为,独立主格结构,）,特别注意,分词短语,作,状语时,，,分词短语,前面,可以加上连词或 介词(如but，and,，though等,)，但是分词短语和句子之间不能用并列连词,。,因为并列连词接的是两个并列成分，而分词短语只是全句的一个状语部分。,分词短语和主句之间可用逗号,。,例如:误:Having been told many times，but he still couldnt understand it,.,正:He was told many times,but he still couldnt understand it,.,或,(Though),h,aving been told many times，he still,couldnt understand it,.,-,ing,的一般式和完成式现在分词都可以表示先后接连发生的动作。在可能引起误解的场合应该用现在分词的完成式表示先发生的动作,。,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。,Coming into the room,，,he put down his bag.,(=,H,e came into the room and put down his bag.),他走进房间，放下提包。,Having brushed his,teeth,，Mr.Brown cam,e,downstairs,for breakfast.,布朗先生,刷过牙，就下楼来吃早饭。(此句如写成:Brushing his teeth,Mr.Brown came downstairs for breakfast.可能指“边刷牙，边下楼,”,。),分词的否定形式是在分词短语前面加上 not,never等否定词构成,。,例如:,Not fearing the fire,the child,touched and got a finger burnt.,小孩儿不知道怕火，用手去摸，把手指烫了。,Not knowing how to find the subway,I asked a policeman for help,.,我不知道怎样找到地铁，就去找警察帮忙,。,.,每空填一词，使该句与所给句子的意思相同,1.Because he was ill,he didnt go to school.,_ _,he didnt go to school.,2.When she was walking along the street one day,she met an old friend of hers.,_,_,_ the street one day,she met an old friend of hers.,Being ill,Walking,along,3.If it is sunny,well go for a picnic tomorrow.,_ _,_,_ _,_,_,well go for a picnic tomorrow.,4.After she had finished her homework,the little girl began to watch TV.,_ _ her homework,the little girl began to watch TV.,5.Because they had been warned by the teacher,they didnt make such mistakes.,_ _ _ by the teacher,they didnt make such mistakes.,It,being,sunny,Having finished,Having,been,warned,.,单项填空,1.The _ boy was last seen _ near the bank of the lake.,missing;playing B.missing;play,C.missed;played D.missed;to play,【,解析,】,missing,是形容词，
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