1、一、教學(xué)目標(biāo)：1. 語(yǔ)言知識(shí)目標(biāo)基本詞匯：litter,advantage,bottom,fisherman,coal,ugly,cost,wooden,plastic,takeaway,bin,shark,fin,method,cruel.Harmful,chain,ecosystem,industry,law,scientific,afford,reusable,transportation,recycle,napkin,upside,gate,bottle,president,inspiration,iron,work,metal,creativity,基本詞組：beharmfulto,

2、atthetop(ofsth.),takepartin,turnoff,takeaction,throwaway,putsth.togooduse,pulldown,bringback基本句型：We'retryingtosavetheearth!Theriverusedtobesoclean.Theairisbadlypolluted.Noscientificstudieshaveshowedthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.2. 技能目標(biāo):能正確運(yùn)用現(xiàn)在進(jìn)行時(shí)，現(xiàn)在完成時(shí)，被動(dòng)語(yǔ)態(tài)，情態(tài)動(dòng)詞和usedto句

3、型。3. 情感目標(biāo):有環(huán)境危機(jī)意識(shí)，學(xué)會(huì)關(guān)注環(huán)境保護(hù)環(huán)境。二、教學(xué)重難點(diǎn)：1. 教學(xué)重點(diǎn)：(1)能正確運(yùn)用現(xiàn)在進(jìn)行時(shí)，現(xiàn)在完成時(shí)，被動(dòng)語(yǔ)態(tài)，情態(tài)動(dòng)詞和usedto句型。(2)保護(hù)環(huán)境的措施方法。2. 教學(xué)難點(diǎn)：能正確運(yùn)用現(xiàn)在進(jìn)行時(shí)，現(xiàn)在完成時(shí)，被動(dòng)語(yǔ)態(tài)，情態(tài)動(dòng)詞和usedto句型。三、教學(xué)步驟:1. Leadin(1)Teachershowsavideoaboutbeautifuloceanthentellsstudentstheearthisbadlypolluted.Whatshouldwedotosavetheearth?Let'stakeaction.Forexample: T

4、urnoffthelightswhenyouleavearoom; Takebusesinsteadofdrivingcars Recyclebooksandpaper.(2)Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!Introducethesharkpresentsituation2.letstudentswatchthevideoabout“Finningan”dDiscussion(1) Haveyoueverseenashark?(2) Whatdoy

5、ouknowaboutsharks?3.listensometingaboutsharksandcompletethesentences.1) FinsoupisespeciallyinsouthernChina.2) Iftheirnumbersdroptoolow,itwillbringtoalloceanlife.3) Manybelievethatsharksaretheinthetheirfoodchain.4) Infact,70millionsharksarecaughtandtradedinthisindustryeveryyear.5) .Theyhaveevenaskedg

6、overnmentstodeveloplawstostopthesaleof4. Reading(1)Sharksareendangered,readthepassageandjudgethesentences. Shark'sfin(魚鰭)soupisfamousandexpensiveallaroundtheworld. Wehavetokillawholesharktogetabowlofshark'sfinsoup. Peoplecutoffsharks'finsandthrowthesharksbackintotheocean. Sharksareintheb

7、ottomofthefoodchainintheocean'secosystem. WildAidandtheWWFareenvironmentaiprotectiongroupsinChina. Shark'sfinsaregoodforhealth.(2)Completethefactsheetin3a.WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvi

8、ronmentalgroupswhichareagainst“finning”5. Practice(3b)(1) Readthepassageanddillintheblankswiththewordsinthebox.1. Manypeopledonotrealizetheyarekillingawholesharktheyenjoyabowlofsharkfinsoup.secosys2. Sharksareatthetopofthefoodchain,iftheirnumbersdrop,theoceanbeindanger.3. Manythinkthatsharksaretoost

9、rongtobeendangered,theyarewrong.4. therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5. Sharksmaydisappearoneday_wedonotdosomethingtostopthesaleofsharkfins.(2) Retellthepassageaccordingtothewordsbelow.shark'sfinsoup,insouthernChinaeachtimecutoffnoIongernot

10、onlybutalsoatthetopdropbeendangeredthestrongestaround70millionfallenbyover90percentWildAidandtheWWFdeveloplawsscientificstudies6. Languagepoints1. Asharkcannolongerswimandslowlydies.鯊魚不能再游泳然后慢慢死掉。nolonger意思是“不再”e.g.I'mnolongerastudent.我不再是個(gè)學(xué)生了。有兩個(gè)短語(yǔ)和noIonger同義，即notanyIonger和notanymore,但他們側(cè)重的方面不同

11、。noIonger禾口notanyIonger側(cè)重時(shí)間。e.g.Henolongerliveshere.=Hedoesn'tlivehereanylonger.他不在這兒居住了。(一個(gè)時(shí)間以前他住在這兒，過了這個(gè)時(shí)間，他就離開了。)notanymore側(cè)重側(cè)重程度和數(shù)量e.g.Youcandrinknomore.=Youcan'tdrinkanymore.你不能再喝了。(喝酒的量到了一定程度，不能再繼續(xù)下去了。)2. ThismethodisnotonIycrueI,butaIsoharmfuItotheenvironment.這種方法不但殘忍而且對(duì)環(huán)境有害。notonlybu

12、talso用于連接兩個(gè)表示并列關(guān)系的成分，著重強(qiáng)調(diào)后者，其意為“不僅而且”;其中的also有時(shí)可以省略。e.g.1）Shenotonlyplayswell,butalsowritesmusic.她不僅很會(huì)演奏，而且還會(huì)作曲。2）Notonlymenbutalsowomenwerechosen.不僅僅是男的，女的也有被選中的。若連接兩個(gè)成分作主語(yǔ)，其謂語(yǔ)通常與靠近的主語(yǔ)保持一致。e.g.Notonlyyoubutalsohehastoleave.不只是你，他也得離開。notonly放在句首，后接句子時(shí)要用倒裝結(jié)構(gòu)。e.g.Notonlyhadthepoormanbeenfined,butalso

13、hehadbeensenttoprison.這個(gè)可憐的人不僅被罰款，而且還被送進(jìn)了監(jiān)獄。beharmfulto對(duì)有害e.g.Smokingisharmfultothehealth.吸煙有損健康。Playingcomputergamesmuchisharmfultostudents.電腦游戲玩太多對(duì)學(xué)生有害。3. Sharksareatthetopofthefoodchainintheocean'secosystem.鯊魚位于海洋生物系統(tǒng)食物鏈的頂部。atthetopof在.最高地位;用最高最大的（速度,聲音等）e.g.Ilookedatthetopofhishead,hishairsh

14、inyandpartedsmoothly.我看他的頭頂,頭發(fā)光亮,分得平滑。Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他盡力大聲叫喊,以便別人能聽見。4. Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.如果它們的數(shù)目降至過低，會(huì)給所有海洋生物帶來危險(xiǎn)。此句復(fù)數(shù)形式的number表達(dá)全海洋中鯊魚的總量。當(dāng)表示數(shù)值的高或低時(shí)，number要用high或low修飾。e.g.Inthatcountry,thenumberofchildrengoingtoschoolish

15、igherincitiesthanintownsandvillage.在那個(gè)國(guó)家，城市兒童入學(xué)人數(shù)比鄉(xiāng)鎮(zhèn)及農(nóng)村要高。常與number搭配的動(dòng)詞有g(shù)row,fall等。e.g.Thenumberoffamiliesthatowncarshasbeengrowingquicklyrecently.近來?yè)碛修I車的家庭數(shù)量增長(zhǎng)很快。5. Environmentprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.世界各地的環(huán)境保護(hù)組織，如野生救援協(xié)會(huì)和世界自然基金會(huì)，都在教育公眾

16、有關(guān)“獵翅”的行為。1）句中fin本為名詞，指"魚鰭”。此句中的finning由動(dòng)詞化的fin（割鯊魚鰭以獲取魚翅）的-ing形式轉(zhuǎn)化而成，指課文中所陳述的“獵翅”這一行為。2）WildAid和WWF組織WildAid（美國(guó)野生救援協(xié)會(huì)）是保護(hù)野生動(dòng)物及棲息地環(huán)境的一個(gè)非盈利性的機(jī)構(gòu)，1999年注冊(cè)成立，其宗旨是保護(hù)及救助世界范圍內(nèi)的野生動(dòng)物；WWF（世界自然基金會(huì)）英文全稱為WorldWideFundforNature，成立于1961年，是享有國(guó)際盛譽(yù)，全球最大的獨(dú)立性非政府環(huán)境保護(hù)組織之一。7. HomeworkWrite5measurestoprotecttheenvironment.SectionA3(GrammarFocus-4c)I.Revision1.Checkifyouknowthesephrases. 不同種類的污染把垃圾扔到河里在中國(guó)南部 在頂部 河底 在中起作用對(duì)有害 海洋生態(tài)系統(tǒng)2. TranslatethesesentencesintoEnglish.甚至是河底都滿是垃