1、Unit13Weretryingtosavetheearth!SectionA2(3a-3c)I.RevisionTranslation.甚至是河底都盡是垃圾。這個小鎮(zhèn)上的每一個人都應當參加打掃。騎自行車有其余的長處。我買外賣食品素來不拿木筷子和塑料叉子。WarmingupT:Theearthisbadlypolluted.Whatshouldwedotosavetheearth?Letstakeaction.Forexample:Turnoffthelightswhenyouleavearoom;TakebusesinsteadofdrivingcarsRecyclebooksandpape

2、r.Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!DiscussionWhatdoyouknowaboutshark(鯊魚)?Doyouthinksharkscanbeendangered?Why?Whatdoyouthinkmightcauseafallinthenumberofsharks?IV.Reading1.Completethefactsheetin3a.WheresharkfinsoupispopularNumberofsharkscaughtand

3、tradedeveryyearHowgovernmentcanhelpTwoenvironmentalgroupswhichareagainst“finning”2.Retellthepassage.sharksfinsoup,insouthernChinaeachtimecutoffnolongernotonlyatthetopdropbeendangeredaround70millionfallenbyover90percentdeveloplawsscientificstudiesbutalsothestrongestWildAidandtheWWFV.Practice(Workon3b

4、)Readthepassageandfillintheblankswiththewordsinthebox.Manypeopledonotrealizetheyarekillingawholeshark_theyenjoyabowlofsharkfinsoup.Sharksareatthetopofthefoodchain,_iftheirnumbersdrop,theoceanecosystemwillbeindanger.Manythinkthatsharksaretoostrongtobeendangered,_theyarewrong._therearenoscientificstud

5、iestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.Sharksmaydisappearoneday_wedonotdosomethingtostopthesaleofsharkfins.VI.LanguagepointsAsharkcannolongerswimandslowlydies.鯊魚不可以再游泳而后慢慢死掉。nolonger意思是“不再”,往常位于實義動詞以前，助動詞、神態(tài)動詞或系動詞以后。e.g.MrBrownnolongerworkshere.布朗先生不再在這里工作了。=MrBrowndoesntw

6、orkhereanylonger/anymore.【運用】.達成句子，每空一詞。2013年3月，因為H7N9禽流感，白水鴨在南京不再受歡迎。Whiteducksare_lovelyinNanjingbecauseofH7N9birdfluinMarch,2013.(2013新疆烏魯木齊)nolonger.改為同義句。Joenolongerlikesdancing._Joedoesniketldancinganylonger/anymore.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.這類方法不只殘忍并且對環(huán)境有害。1）noto

7、nlybutalso用于連結(jié)兩個表示并列關(guān)系的成分，側(cè)重重申后者，其意為“不單而且”;此中的also有時能夠省略。Notonlydoesmysistersingwell,butshedanceswell.我姐姐不只歌唱得好，并且舞也跳得好。Notonlythestudentsbutalsotheteacherisworkinghard.不單學生們在努力，并且那位老師也在努力。當notonly置于句首時，常用_。倒裝語序notonly.butalso.連結(jié)兩個主語時，謂語動詞需與_那個主語在人稱和數(shù)上保持一致。后邊【運用】同義句變換，每空一詞。(1)SheandIhavealreadybeent

8、oBeijing._she_IhavealreadybeentoBeijing.Notonlybutalso(2)Helikestoswimandhewantstoteachthekidstoswim,too.Notonly_toswim,_hewantstoteachthekidstoswim.doeshelikebut(3)Thetwinswerelatethismorning.Samwaslatethismorning,too.Notonlythetwins_Sam_latethismorning.butalsowas_Sambutalsothetwins_latethismorning

9、Not.onlywere2)beharmfulto對有害e.g.Smokingisharmfultothehealth.抽煙有害健康。Playingcomputergamesmuchisharmfultostudents.電腦游戲玩太多對學生有害。3.Sharksareatthetopofthefoodchainintheoceansecosystem.鯊魚位于大海生物系統(tǒng)食品鏈的頂部。atthetopof在.最高地位;用最高最大的(速度,聲音等)e.g.Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他全力高聲叫喚,以便他人能聽見。Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.假如它們的數(shù)目降至過低，會給全部大海生物帶來危險。此句復數(shù)形式的number表達全大海中鯊魚的總量。Inthatcountry,thenumberofchildrengoingtoschoolishigherincitiesthanintownsandvillage.在那個國家，城市少兒入學人數(shù)比鄉(xiāng)鎮(zhèn)及鄉(xiāng)村要高。當表示數(shù)值的高或低時，number要用_修飾。常與numb