SectionBThemainactivitiesare1aand3a.本課重點活動是1a和3a。Ⅰ.Teachingaimsanddemands教學目標1.Learnsomenewwords:clone,experiment,direct2.Goonlearningthepastsimplepassivevoice:(1)Whenwasitinvented?(2)Itwasinventedin1879.3.Learnsomeinformationabout“clone”.Ⅱ.Teachingaids教具錄音機/多媒體課件或教學掛圖Ⅲ.Five-fingerTeachingPlan五指教學方案Step1Review第一步復習(時間:13分鐘)1.(做一個鏈式游戲，以小組為單位，就課本昨天學過的計算機，MP3，英語學習機，手機，數(shù)碼相機或?qū)W習用具等進行對話，用bemadeof/bemadein/bemadefrom/beusedfor的句型進行操練。以一小組的第一個同學回過頭去問下一位同學，依次接著往下問。)T:Boysandgirls.Let’splayagame.Askquestionsonebyone.S1:HowdoyousayitinEnglish?(鋼筆)S2:Apen.S1:What’sitmadeof?S2:It’smadeofsteelandplastic.S1:Whenwasitmade?S2:Itwasmadein2022.S1:What’situsedfor?S2:It’susedforwriting.T: Doyouunderstand?Ss:Yes.T:OK.Let’sbegin.2.(出示教學掛圖，導出新課。)T:Youdidverywell.Therearemanyimportanttechnologiesandinventionsintheworldtoday.Lookathere.(展出燈泡圖形。)It’salightbulb.(學生跟讀lightbulb。)Whatdoyouknowaboutit?Ss:Yes,alittle.T:OK,Whoinventedit?Ss:ThomasEdison.T:Whenwasthelightbulbinvented?Doyouknow?Ss:No.T:Itwasinventedin1879.Andthispicture(出示radio的圖片。)Whoinventedtheradio?Doyouknow?Ss:Wedon’tknow.T:ItwasinventedbyGuglielmoMarconi.(展示圖片的發(fā)明者的名字和年份。)T:Andwhenwasitinvented?Ss:Itwasinventedin1895.T:Verygood.Andlookatthispicture.(展示一個飛機的圖片。)Whoinventedit?(同時展出圖后的發(fā)明者和年份。)Ss:ItwasinventedbyWilburandOrvilleWright.T:Andwhenwasitinvented?Ss:Itwasinventedin1903.3.T:Wehavetalkedaboutsomanyinventions,buthaveyoueverheardofclone?(教師釋義并領讀clone。)Ss:Yes,ofcourse.T:That’sverygood.Sowhat’sthenameofthefirstclonedsheep?Ss:Dolly.T:Whenandwherewasitcreated?(教師釋義并領讀creat。)Ss:ItwascreatedinScotlandafewyearsago.T:Whatisusedincloning?Ss:DNA.T:Whatotherthingshasmancloned?Ss:Rabbits,cows,mice,pigsandsomeotheranimals.Step2Presentation第二步呈現(xiàn)(時間:10分鐘)1.(播放1a錄音，讓學生回答以下問題。然后核對答案。)T:Listentothetape,thenanswerthefollowingquestions.(1)Whoinventedthelightbulb?(2)Whenwasthelightbulbinvented?(3)Whenwastheradioinvented?(再播放一遍，學生跟讀，讓學生填好黑板上表格。完成1b。)InventionInventorYearLightbulbGuglielmoMarconi1903(由兩個學生到黑板上把表格填好，教師核對答案。)2.(指導學生閱讀3a,教師板書文中的關鍵詞和短語，為學生復述短文做準備。)T:Wehavelearnedalotofinventions.Nowwearegoingtolearnsomethingnewaboutagreat(板書)theclonedsheep,Scotland,agreatexperiment,rabbits,sheep,cows,mice,pigs,andsomeotheranimals,DNA,livingthings,humanbeings,everypartofyourbody,fingernails,hair,own(學生閱讀后，檢查答案，mark(T)or(F)。完成3b。)(1)Theclonedsheep,Dolly,wasclonedinCanada.F(2)Scientistshaveclonedpigs.T(3)EverypartofourbodyhasdifferentDNA.F(4)ThereisDNAinalllivingthings.F3.(讓學生聽3a并跟讀，畫出生詞和重點詞組，教師板書。)T:Pleaselistento3a.andreadafterit.Findoutthenewwordsandimportantphrases.(板書)clone,create,experiment,sofar,thesameas…,besimilarto(學生聽完錄音后，與教師板書的內(nèi)容對照，并朗讀課文3a，教師講解本課重要詞組。)Step3Consolidation第三步鞏固(時間:10分鐘)1.(引導學生看黑板上表格中的信息，講述三項發(fā)明的情況，鞏固1a。鼓勵學生使用本課的目標語言：一般過去時的被動語態(tài)。)T:Now,lookatthechartontheblackboardandtrytosaysomethingabouttheinventionswelearnedjustnow.S1:ThelightbulbwasinventedbyThomasEdisonin1879.S2:TheradiowasinventedbyGuglielmoMarconiin1895.S3:TheairplanewasinventedbyWilburandOrvilleWright.Itwasinventedin1903.T:Welldone!NowsupposeyouareJaneandMichael.You’revisitingtheScienceTalkaboutthethreeinventionsaswelearnedjustnow.Thenactitout.Getreadyforitfor3minutes,OK?(讓學生自編自演對話。)2.(指導學生看黑板上另一板塊，3a中的關鍵詞，用這些關鍵詞來復述3a，讓學生用3分鐘時間做準備，然后用接龍的方式進行復述。教師利用黑板上的中心詞進行提醒。)T:Justnow,we’relearnedsomethingaboutcloning,lookatthewordsontheblackboard.Canyousaysomethingabout“clone”?S3:Dolly,aclonedsheep?S4:Yeah.It’swell-known.S5:Cloningisknownasagreatexperimentallovertheworld.S6:Good!S7:ShewascreatedinScotlandafewyearsago.S8:Sofar,manhasclonedrabbits,sheep,cows,mice,pigsandsomeotheranimals.(讓剛才搶答問題的學生重復一遍自己所說的那句話，教師不再提示關鍵詞，讓學生按同樣的方式繼續(xù)進行接龍，為激發(fā)學生的興趣，可分組競賽，看哪組復述的句子又快，又多，又準確。)(精心組織學生復述課文，同時反復提示本課目標語言：becreated,beused。在黑板上記錄每組的競賽結(jié)果，對勝者進行掌聲鼓勵。)Group1√√√√√Group2√√√√√T:Wehavegottheideaofclone.Doyouthinkit’sterribletosee“anotheryou”?Ss:…Step4Practice第四步練習(時間:7分鐘)1.T:Boysandgirls,doyouwanttoknowmoreinventions?Let’slistentothetapecarefullyandfillin2onpage87.(播放2錄音，然后檢查部分學生答案，如發(fā)現(xiàn)有困難，可再播放一遍錄音，提高學生們的聽力水平，然后就聽力內(nèi)容提問。)T:Whowasthecarinventedby?Ss:KarlBenz.T:Whenwasitinvented?Ss:In…T:Whataboutthetelephone?Ss:ItwasinventedbyAlexanderGrahamBellin…T:WhatdidJohnBairdinvent?Ss:Heinventedthetelevision…T:Whendidheinventit?Ss:Heinventeditin…(讓學生分成三組分別討論這三項發(fā)明，并用自己的話復述2中的部分內(nèi)容。)T:Now,pleasetalkabouttheinventionsinyourownwords.Group1,pleasetellussomethingaboutthecar.G1:Thecar…T:Now,Group2,wouldyouliketotalkaboutthetelephoneorthetelevision?G2:We’dliketotalkabout…T:Group3.It’syourturntotalkabout...2.(用多媒體展示一些圖片，并要求學生用過去時的被動語態(tài)造句。鞏固本課的語言點。完成4。)T:Makeupsentencesaccordingtotheexampleandpracticemore.Forexample:(展示computer圖片)ComputerswereinventedinAmerica.(展示神Ⅵ發(fā)射圖。)Ss:ShenzhouⅥwassentupintospaceinChinain2022.(展示張藝謀導演的大片。)Ss:ThefilmwasdirectedbyZhangY