新编英语教程4(李观仪主编)Unit6课件.ppt

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2、Pre readingActivities 1 brain stormNameasmanyanimalsasyoucan 2 questionsfordiscussion 1 Doyouloveanimals Whatisyourfavoriteanimal 2 Whatdoyouthinkofvegetarianism Doyouthinkitiswrongtoeatanimals 3 Whatisecologicalbalance Andfoodchain Giveexamples Theanimalkingdom Birds finch雀 Birdsofprey vulture Poul

3、tryandgame家禽和野禽 chicken Seabirds seagull Primates 灵长类 monkey chimpanzee Marsupials 有袋类 koala kangaroo Rodents 啮齿类 mice rabbits squirrel Mammals 哺乳类 cows whales Theanimalkingdom Pachyderms 厚皮动物 hippo elephant Insects bees butterfly flea dragonfly 蜻蜓 Arachnids 蛛形动物 scorpion mites ticks Reptiles snake

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6、y EcosystemLivingthings creaturesCreatureorganism alivingthing esp onethatisextremelysmall有机体 生物 尤指 微生物 aliving marine alivingthing realorimaginary thatcanmovearound suchasananimal生物 动物 2 parasites mensalism6 MutualismDefinitions 1 predators prey Characteristics Examples 1 Predators Consumersthatkil

7、ltheotheranimalsforfood Humans tigers wolves Notnecessarily bad donothaveaneasytimeofit Verynumerous 2 Parasites Organismsthatliveonorinotherlivingthings Fleas ticks etc Sometimesworks sometimesdoesn t 3 BiologicalControl Limitingpestsbyusinglivingorganisms MongoosestoJamica sparrowstoU S A Livingor

8、ganisms livingtogether 4 Symbiosis numerous Oneorganismbenefits othernotaffected 5 Commensalism Remorasandsharks Bothorganismbenefits 6 Mutualism Algaeandfungus egretsandrhinoceroses WordsandphrasesinL1 25 formal toremembersb sth remindsbofsth bring callsb sthtomind Shecouldn tcalltomindwhereshehads

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10、ofthingsorpeople oftenonethatislargeorimpressive大堆 大量 atwill wheneverorwhereveryoulike Theywereabletocomeandgo species 种 物种 endangered SomesentencesfromL1 25 L7 Sometimesindividualpredatorsdopreyuponfarmanimals andtheseindividualshavetobecontrolled 强调 Mother Haveyoufinishedyourhomework Son Yes Mum I

11、dohavefinished See thisisit SentencesfromL28 40 L28 Predatorsareusuallybiggerandfewerinnumberthantheanimalstheypreyupon Thereverseistrueofparasites Theparasiteshavetheoppositecharacteristics Peopleliveinbighousesinthecountry buttheconditioninthetownisjusttheopposite Parasite acreaturedependingonanot

12、herforthenecessitiesoflife Flea 蚤Louse lice 虱子Fungus fungi 真菌 如蘑菇 Bacterium bacteria Flatworm 扁形虫insect Tick扁虱 吸血寄生虫 Mite螨Elmspanworm 尺蠖 北方称步曲 南方称造桥虫 状似蜘蛛的微小生物 在动植物 地毯等上生活 taketosth tobegintodosthasahabit开始沉溺于 I vetakentowakingupveryearly taketosb sth tostartlikingsb sth Itooktomynewbossimmediately

13、我已形成习惯 醒得很早 L42 60 attachv sth tosth 把 固定 importance significance value weight ect tosth 认为 有重要性 或意义 价值 分量等 重视 tosb sth formal 使 与 有联系 Noblameattachestoyou 你一点责任也没有 attached I veneverseentwopeopleso toeachother Thisdoesnotattachanyblametoyou Themiddleschoolis totheuniversity Pleasecompletethe applic

14、ationform 依恋 附属于 所附的 Symbiosis共生 Twodifferentlivingorganisms parasiteandhost livingtogether Commensalism共栖 Oneorganismbenefitsandtheotherisnotaffected Mutualism互利共生 Bothorganismsbenefitfromlivingtogether Symbiosis共生 Rhinoceros犀牛 Egret白鹭 Therearethreemaintypesofsymbiosis baseduponthespecificrelations

15、hipbetweenthespeciesinvolved mutualism parasitism andcommensalism Symbiosis共生 Commensalism共栖 remoras shark 鮣 Commensalism共栖 sponge海绵 seaanemone海葵 任一种大量的珊瑚虫纲花状海生腔肠动物 具有能够伸缩的圆筒形身体和围绕着中间的嘴的触须 Mutualism互利共生 lichen地衣 苔藓algae 地衣就是真菌和苔藓植物的共生体 地衣靠真菌的菌丝吸收养料 靠苔藓植物的光合作用制造有机物 如果把地衣中的真菌和苔藓植物分开 两者都不能独立生活 lichenon

16、atree lichensgrowingonarock Thestyleofexpositorywriting Longerparagraphsinwhichtherearelongerandmorecomplexsentences Third personnarration forthepurposeofobjectivitySentencesinthepassivevoice ExpositoryWritingTechniques TheconsumersthatkillotheranimalsforfoodarecalledpredatorsInsomerelationships oneorganismbenefitsandtheotherisnotaffectedatall Thisiscalledcommensalism Supplyingdefinitionsforthetechnicalterms Quotingdirectlyfromfamous biologiststowinauthority Dr GeorgeSchallerworte Thetiger sseem

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