Unit6EarthfirstUnderstandingideas課件高中英語

Unit6EarthfirstFREETALKDoyouknowanythingaboutpolarbears?Whatthreatsdotheyface?Doyouknowanyotherendangeredspecies?Watchthevideo—SaveLifeonEarthandanswerthequestions.1.Whichofthefactsinthevideodoyoufindmostalarming?2.Whatdoesthevideowanttotellus?ThemostalarmingfactIfindinthevideoisthataround150to200speciesofplantsandanimalsbecomeextinct-nearly1,000timesthenaturalrateofextinction.Severeenvironmentalproblemswearefacingnowadaysmakeourfutureuncertain.It’stimeforeveryonetotakeactionnowandmakeourplanetagreenerandsaferplaceforourfuturegenerations.Lookatthecartoonsandanswerthequestions.1.Whatenvironmentalproblemdoeseachcartoonreferto?waterpollutiondeforestationairpollutionglobalwarming2.Whatarethecausesoftheseproblems?waterpollution:

peopledroplittercarelessly;industrialwaste-waterdischarge...deforestation:peoplecutdowntreestomakingpaper...airpollution:illegaldischargeofindustrialwastegas...globalwarming:heavyuseofprivatecars...3.Whatdoyouthinkisthemostseriousenvironmentalproblemwefacetoday?Whatshouldbedonetohelpsolveit?ChoosereusableitemGetrenewableenergyHelpplanttrees...Tickthewordsthatyouwouldusetodescribesharks.Addanymoreyoucanthinkof.ReadthepassageandfindouthowsharksaredescribedinthefilmJaws.Vocabulary1.scaredbescaredof(doing)sth. 害怕(做)……;對(做)……感到驚恐bescaredtodosth. 不敢做某事bescaredtodeath 嚇得要死bescaredthat... 害怕……練習(xí)：Thosenaughtychildrenwere________(scare)intotellingthetruth.scaredVocabulary2.cut...offcutofthewatersupply 切斷水源供應(yīng)cutacross 抄近路穿過cutaway 切掉，剪掉cutdown 砍倒:削減，縮短cutup 切碎;剁碎;使傷心;使悲傷:健難受cutin 插嘴;突然插入cutout 切掉;刪掉練習(xí)：IwasspeakingtoAnnonthephonewhensuddenlywewerecut______.offVocabulary3.havea(n)...effecton/uponhaveapositive/negativeeffecton 對……有積極的/消極的影響bring/putsth.intoeffect 使……生效/實(shí)行/實(shí)施takeeffect 開始起作用;生效，開始實(shí)施havean/noeffecton 對……有/沒有影響comeintoeffect 生效，開始實(shí)施ineffect 實(shí)際上,事實(shí)上;有效練習(xí)：Achangeindiettodaycouldtakeseveralmonthstohaveaneffect______yourhair.onVocabulary4.targetsetoneselfatargetof 給自己設(shè)定一個......目標(biāo)reach/achieve...target 達(dá)到/實(shí)現(xiàn)……目標(biāo)meet/achieve/reachatarget 完成/達(dá)到目標(biāo)aimatthetarget 瞄準(zhǔn)目標(biāo)hit/missthetarget 中/脫靶on/offtarget 切/不切題練習(xí)：Thiscourseistargetedmainly_______Englishbeginners.at/onVocabulary5.mistakelearnfromone'smistakes 從某人的錯誤中學(xué)習(xí)makenomistake(aboutsth.) 別搞錯;注意inmistakeforsth. 誤以為是某物;錯看成某物mistake...for 把……錯當(dāng)成……mistake...as 把……錯看做……bemistakenabout 誤解……makeamistake 犯錯練習(xí)：Whatyouneedisagreatteacherwholetsyoumake__________(mistake).mistakesVocabulary6.attitudehave/takeagood/firm/positive/negativeattitudeto/towards對……堅定的/積極的/消極的態(tài)度What'stheattitudeto/towards(doing)...?對(做)……的態(tài)度是什么?take/havea/an…attitude 持一種……態(tài)度anattitudeto/towards 對……的態(tài)度練習(xí)：Hergoodbehaviourmadeuschangeourattitudes__________her.to/towardsReadthepassageandfindouthowsharksaredescribedinthefilmJaws.Sharksaredescribedinthefilmsasdangerousandbadanimalsthateathumans.Choosetheauthor’spurposeinwritingthepassage.1TocriticisePeterBenchley’smisleading

descriptionofsharksinhisbook

andadvocatetheprotectionofsharks.2Toexplainpeople’smisunderstandingofsharksandraiseawarenessofsharkprotection.3Toinformpeopleaboutsharksandrecommend

thefilmandthebooktothem.Readthepassageagainandchoosethemainideasfortheparts.Para.1__________________________________Para.2__________________________________Para.3__________________________________Para.4__________________________________Para.5__________________________________Jawsstrengthenedpeople'slong-heldideas:greatwhitesharksweredangerousanimals.Jawsmadepeoplemorescared/frightenedofsharks.Thenumberoflargesharksfellquickly.PeterBenchleyandexperts’ideasofsharks:Sharksdon'ttargethumans.Thefortunatethingforsharks:Morepeoplewanttoprotectsharksfromextinction.1.ThewriterdescribedtheopeningsceneofthefilmJawsinorderto____.introducethetopic B.makepeopleawareofsharkstellsharksaredangerous D.showhisangrytothefilm2.Whichofthefollowingwasledtobythefilm?A.Manysharkswerekilledforfin.B.Childrenweremorefrightenedofsharks.C.Mostofpeoplestopswimminginthesea.D.Peoplebelievesharkarehorribleanimals.Readthepassagecarefullyandchoosethebestanswer.3.Thethirdparagraphmainlytells__________________.A.Finningledtosharks’numberfalling.B.Finningshouldbeforbiddenbythelaw.C.It’scruelforthesharkstobekilledforprofit.D.It’sthefilmthatmakesfinningpopular.Readthepassagecarefullyandchoosethebestanswer.3.Thethirdparagraphmainlytells__________________.A.Finningledtosharks’numberfalling.B.Finningshouldbeforbiddenbythelaw.C.It’scruelforthesharkstobekilledforprofit.D.It’sthefilmthatmakesfinningpopular.Readthepassagecarefullyandchoosethebestanswer.4.WhenPeterBenchleysawsomanydeadsharks,hebeganto____________.A.feelsorryforsharks B.becomeashamedofhislackofknowledgeC.admithismisunderstandingofsharks D.giveupwritingtoprotectsharks5.Howdoesthewriterfeelaboutthefutureofthesharks?A.Worried. B.Pessimistic.C.Unconcerned. D.Optimistic.Readthepassagecarefullyandchoosethebestanswer.Completethechartshowinghowattitudestowardssharkshavechangedwithwordsandexpressionsfromthepassage.asdangerousanimalssharkswerebadanimalsthatatehumansswimmingintheseafishforsharksfearofsharksandfinningCompletethechartshowinghowattitudestowardssharkshavechangedwithwordsandexpressionsfromthepassage.asdangerousanimalswaswrongaboutsharks’behaviourtoprotectsharksdonotseepeopleasfoodunderstandingsharksprotectsharksfromextinctionHecametoseepeopleasadangertosharksratherthantheotherwayround.ratherthanratherthan而不是Therewasnodoubtthatitwasaquarrelratherthanadebate.毫無疑問那是一場爭吵,而不是辯論。(連接并列名詞)Thesweatersheboughtwasbeautifulratherthancheap.與其說她買的這件毛衣便宜不如說它漂亮。(連接并列形容詞)ratherthan(1)ratherthan常用于平行結(jié)構(gòu)中,連接兩個并列成分，如名詞、代詞、形容詞、介詞(短語)、動名詞、分句、不定式、動詞(短語)等。ratherthan后接不定式時，不定式可以帶to,也可以不帶to。(2)ratherthan連接兩個名詞或代詞作主語時,謂語動詞應(yīng)與ratherthan前面的名詞或代詞在人稱和數(shù)上保持一致。Heratherthanyouissupposedtoloseweight.是他該減肥了，而不是你。(連接并列人稱代詞)(3)ratherthan與would連用時,構(gòu)成“wouldrather...than...”句式，意思是“寧愿……而不愿……”,表示主觀愿望,即在兩者之中選擇其一。寧愿做……而不愿做：woulddo...ratherthando…=wouldratherdo...thando…=prefertodo...ratherthando…=preferdoing...todoing...Fortunately,noteveryonewhowatchedthefilmJawsbecameafraidofsharks…部分否定與全部否定(1)英語中的all,both,each,every,everybody,everything,wholly,entirely等具有總括意義的代詞和副詞與否定詞not連用無論not的位置在哪里，均構(gòu)成部分否定，表示“并非都”的意思。Allthepeopledidn'tarriveonschedule.=Notallthepeoplearrivedonschedule.并非所有的人都按時到達(dá)。部分否定與全部否定(2)若表示完全否定，可借助于no,none,noone,nobody,nothing,neither,never等。Noneofuscouldpersuadehimintogivingupsmoking.我們當(dāng)中沒有人能說服他戒煙。Noneofusknowshowtofacetheproblem.我們中沒有人知道該如何面對這個問題。HowdoyouthinkPeterBenchleyfeltafterdivingin1980?Whatotherfilmsorbooksdoyouknowthatfeaturewildanimals?Dothey“paint”agoodorbadpictureoftheseanimals?Sayhowtheanimalsaredescribed.Think&sharePeterBenchleymightfeelsadforthesharksbeingkilled;hemightfeelregretfulfordepictingthegreatwhitesharkasadangerousanimalinhisbook;hemightalsofeelangryaboutfinning.Whydoweneedtoprotectsharks?Sharksplayacrucialroleinhealthyoceanecosystemsbecausetheyareatoppredator—theykeeppreyspeciespopulationsatahealthylevelandpreventalgaeovergrowththatadvancesthedeclineofcoralreefs.Somespeciesofsharksareparticularlyvulnerabletooverfishingbecausetheydonotpopulatequickly.Similartohumans,mostsharkspeciesarelong-lived,slowgrowingandtakemanyyearstoreachsexualmaturity.Inaddition,sharksgivebirthtofewoffspringatatime,havehighjuvenilemortalityandinfrequentlyreproduce.Asacommodity,thereisalegaltradeinsharkproductsandthelegalsharkfishingindustryprovidesanhonestlivelihoodformany.Sharksarealsovitaltolocaleconomiesthroughdivetourism,wherehumansenjoyobservingandlearningaboutthesegentlegiantsunderwater.Exercise1.Sheisfilledwith_______(angry)atthewayshehasbeentreated.2.Mymumkeeps__________(tell)metogooutwithmys