新编英语教程4unit.ppt
《新编英语教程4unit.ppt》由会员分享,可在线阅读,更多相关《新编英语教程4unit.ppt(43页珍藏版)》请在三一办公上搜索。
1、Unit 6,Text I Predators,Parasites and Other Relationships,Text II Slaughter of the Elephant,Text I Text II Oral Work Guided Writing Listening,Pre-reading Activity Structure Vocabulary Acquisition Intensive Reading Answer the Questions Orally,Text 1:Predators,Parasites and Other Relationships,Look up
2、 the following words in the dictionary.What subjects do you think this text is about?What type of writing is it?What do you anticipate?,Text I,Pre-reading Activity,Predators,Parasites and Other Relationships,1.Predator:a wild animal that lives on other animals by killing and eating them Parasite:a p
3、lant or animal that lives on or in another and gets food from it Ecosystem:a system which relates all the plants,animals and people in an area to their surroundings2.The title of the text strongly suggests that it is an expository piece of writing on ecology.,Text I,Pre-reading Activity,Predators,Pa
4、rasites and Other Relationships,This is Earth and Sky.When you look at a farm or a ranch,you might think to yourself,thats where _ or _ products come from.You might see _ that goes into clothing,or wood for paper,construction or fuel.But Scott Swinton,agricultural economist from Michigan State Unive
5、rsity sees more.He knows that agricultural lands_ air and water,_ greenhouse gases,and provide _ for wild plants and animals.These extra _ are ones that some ecologists have called ecosystem services.And ecosystem services are really just things that ecosystems provide that humans care about and tha
6、t we like.Ecosystem services may not be bought and sold in a marketplace.But they have _.Swinton is planning a survey of Michigan citizens to ask what theyd pay for ecosystem services such as reduced erosion or runoff or more greenhouse gas storage.Its part of an effort to understand the value on ec
7、osystem services.Swinton also wants to understand how _ farming practices affect the ecosystem services that a piece of land provides.And then finally with those kinds of things understood,we can think about designing policy _ for farmers to produce more of these ecosystem services.,Text I,Listening
8、 Practice,corn,dairy,cotton,filter,store,habitat,benefits,value,specific,incentives,Now,please underline the key words or phrases.,Text I,List of key words of each paragraph,1.Predators include lions,wolves,robins,frogs,humans,etc.2.Humans are the greatest predators known3.Predators do not really ha
9、ve an easy time killing defenseless prey.,Now,please underline the key words or phrases.,Text I,List of key words of each paragraph,4.Parasites often spend an entire lifetime with their hosts.5.Man makes use of predators and parasites to control the number of some pests.This is called biological con
10、trol.6.Parasites and their hosts are closely associated with each other,and that is an example of symbiosis.,Text I,Structure,To support a generalization with a specific case,To support an abstraction with a concrete instance,To develops his material by offering examples and details,To use the commo
11、n method Of illustrating an idea by examples,Text I,Vocabulary Acquisition,Write down the definition of each word that fits the context.,carnivore(L.4)prey on(L.17)superb(L.25)array(L.13)species(L.25)ad infinitum(L.38)deliberately(l.42),A flesh-eating animal,Hunt an animal of any kind,excellent,A co
12、llection,A group of plants or animals of the same kind,Without end,forever(Latin),On purpose,intentionally,Some predators,carnivores such as lions,1.A flesh-eating animal.食肉动物2.Any of various predatory,flesh-eating mammals of the order Carnivora,including the dogs,cats,bears,weasels,hyenas,and racco
13、ons.食肉动物:食肉目各种食肉性哺乳动物的一种,包括狗、猫、熊、鼬、鬣狗以及浣熊3.An insectivorous plant.食虫植物,n.adj.carnivorous,Sometimes individual predators do prey upon farm animals,v.on/upon1.To hunt,catch,or eat as prey:捕食2.To victimize or make a profit at someone elses expense.使成为牺牲品:使成为牺牲品或以损害他人谋利3.To plunder or pillage.抢劫或抢夺4.To
14、exert a baneful or injurious effect:折磨,使痛苦,prey:v.&n.,Sometimes individual predators do prey upon farm animals,n.1.An animal hunted or caught for food;quarry.捕获物,猎物 2.One that is defenseless,especially in the face of attack;a victim.牺牲品 3.The act or practice of preying.捕猎,捕食,词组:1)be become,fall a pr
15、ey to 成了.的受害者,受.的折磨2)easy prey 容易捕获的猎物;容易上钩者;头脑简单的人3)make a prey of 把.当作食物猎获物4)seek after ones prey 寻食;寻求战利品,prey upon,Please translate:我不知道在动物世界里是否总是弱肉强食。I dont know if it is always the case in the animal world that stronger animals prey upon the weaker ones.,People usually believe that predators h
16、ave an easy time of it,killing defenseless prey.,Please paraphrase:People usually think that predators do not have to make an effort to kill the prey animals,since they prey have no means of protecting themselves.,strength and size,and formidable claws and teeth,formidable:adj.1)Arousing fear,dread,
17、or alarm:可怕的:引起恐惧或忧虑的:E.g.the formidable prospect of major surgery.2)Inspiring awe,admiration,or wonder:不可思议的:引起敬畏、钦佩或惊奇的:3)Difficult to undertake,surmount,or defeat:难对付的:难以完成、克服或对付的:E.g.a formidable challenge;a formidable opponent.,My experience shows quite the contrary-the tiger has to work quiet
18、hard for its meals,I estimate that,for every wild prey killed,the tiger makes twenty to thirty unsuccessful attempts.,Please paraphrase:What I have gone through proves quiet opposite,i.e.,the tiger has to make a real effort to get something to cat.I would say that in order to catch one wild animal,t
19、he tiger has to try to make twenty to thirty attempts.,If the wolf could capture prime,healthy prey,it,prime most important synonym maine.g.吸烟是引起肺病的主要原因。Smoking is the prime cause of lung disease.我们主要关切是为所有毕业生提供工作岗位。Our prime concern is providing jobs for all the graduates.2.of the very best quality
20、 or kind The hotel is in a prime location overlooking the valley.3.be a prime candidate/target(for something)Old people are a prime target for thieves.4.prime example Blakey Hall is a prime example of a 19th century building.,So,naturalists observe,a fleaHath smaller fleas than he on him prey;And th
21、ese have smaller still to bite em,And so proceed ad infinitum.,Please paraphrase:Naturalists have observed that fleas have smaller fleas living on and feeding off them,and these have even smaller fleas on them.This phenomenon continues almost indefinitely.,扁虱,fungi:n.真菌,菌类 singular:fungus bacteria:n
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 新编 英语 教程 unit
链接地址:https://www.31ppt.com/p-5273436.html