九年級英語上冊Unit4AmazingScienceTopic3Idontthi

wordword#/26Don'tforgettoaddschools,shops,gardens,etc.Youcandiscusswithyourpartnerandarrangeeverythingwell,thenyoucanexchangethepictures.Homework:SupposeyouareanastronautandhavejustebackfromMars.PleasewriteareportaboutthelivingconditionsinthespaceshipandtheinformationaboutMars,includingitscolor,shape,climate,distancefromthesun…板書設(shè)計：Idon'tthinkalienscanbefoundinspace.SectionCatadistanceof…Marsgoesaroundthesunatadistanceofabout…IthasbeentwodayssincewelandedonMars.Itissixweekssincewehadapropershower.::SectionD；\、工x、w'Themainactivitiesare1aand4.本課重點活動是1a和4。I.Teachingaimsanddemands教學(xué)目標(biāo)Learnsomenewwordsandaphrase:beyond,separate,handinReviewtheuseof“modalverb+be+P.P.”Talkaboutourplanetandlivingthingsonotherplanets.Teachingaids教具多媒體課件/教學(xué)掛圖/錄音機/幻燈片F(xiàn)ive-fingerTeachingPlan五指教學(xué)方案Step1Review第一步復(fù)習(xí)（時間：7分鐘）通過圖片造句，復(fù)習(xí)本單元重點語法項目——含有情態(tài)動詞的被動語態(tài)，然后通過判斷句子正誤的方式鞏固Section。導(dǎo)入新課。1.（多媒體展示一些圖片，學(xué)生們根據(jù)圖片內(nèi)容造句，該句子必須是“情態(tài)動詞+被動語態(tài)結(jié)構(gòu)”，復(fù)習(xí)本單元語法。）T: Hello!Boysandgirls,inthistopicwehavelearnedanewgrammar,thepassivevoicewithmodalverbs.Now,let’slookatthescreen.Makesomesentencesaccordingtothepictures.Pleaserememberthatyoushoulduse“.”Doyouunderstand?Ss:Yes.T: （多媒體呈現(xiàn)一個很臟的教室。）Hereisaclassroom.S1,canyoumakeasentence?Yes.Theclassroomshouldbecleanedeveryday.T: Good.Let’slookatnextone.（呈現(xiàn)一幅環(huán)境污染圖片。）S2,please?Theenvironmentmustbeprotectedbyus.T: Excellent.Nextone.（呈現(xiàn)一輛壞了的自行車圖片。）S3,youplease!Thebikeshouldberepaired.T: Good.Next.（展現(xiàn)一幅小孩用臟兮兮的手吃蘋果的圖片。）Whocanmakeasentence?canyou?Herhandsshouldbewashedbeforeeatingapples.T:Right.Let’slookatnextone.（呈現(xiàn)一片被砍伐的樹林圖片。）Thetreesshouldn’tbecutdownbypeople.T: OK,next.（展現(xiàn)科學(xué)家們正在認真做研究的圖片。）Scientificresearchmustbedonecarefully.T: Youdidverywell.Haveyoumasteredthenewgrammar?SS:Yes.2.（多媒體制作幾句動漫的聲音。讓學(xué)生判斷波利說的上一節(jié)課學(xué)過的關(guān)于火星的內(nèi)容是否正確。激發(fā)學(xué)生的興趣，達到復(fù)習(xí)的目的。）T: Boysandgirls.We’velearnedsomethingaboutMars.Doyoustillremember?Ss:Yes.T: Let’slistentowhatPollysays.AreherexpressionsaboutMarsrightorwrong?Polly:Marsgoesaroundtheearthatadistanceofabout228millionkilometers.Ss:No,youarewrong.Polly:Itisonefourthasbigastheearth.Ss:No,it’sabouthalfasbigastheearth.Polly:Marslookslikearedandblackball.Ss:No,itlookslikearedandorangeball.Polly:Itisverybeautiful.Ss:Yes.Polly:Apersonweighs120kilosontheearth,butonlyweighs48kilosonMars.Ss:Yes,youareright.Polly:ThetemperatureonMarsisbetween-120℃and20℃.Ss:No,it’sbetween-138℃and28℃.Polly:IttakesaspaceshipfromtheearthabouteightyearstoreachMarswhenthetwoplanetsareclosesttoeachother.Ss:No,eightmonths,noteightyears.T: OK,boysandgirls,youdidverywell.Asweknow,Marsisthefourthplanetfromthesuninoursolarsystem.Thislesson,let’sgoontalkingaboutsolarsystem.Step2Presentation第二步呈現(xiàn)（時間:14分鐘）利用太陽系的圖片學(xué)習(xí)生詞，導(dǎo)入新課，呈現(xiàn)1a,完成1b。1.（出示教學(xué)掛圖——太陽系，讓學(xué)生們從感官上認識太陽系，教師導(dǎo)入新課。）T: Boysandgirls,justnowwetalkedaboutMars.Doyouknowhowmanyplanetsthereareinthesolarsystem?Ss:Yes.Thereareeight.T:Right.Thesolarsystemislikethehomeoftheeightplanets.Ourplanet,theearth,isthethirdplanetfromthesun.However,thesolarsystemisasmallpartoftheuniverse.（板書并要求學(xué)生理解。）universeT:Scientistshavesentupspaceshipstoexploreotherplanetsinthesolarsystem.What’smore,somespaceshipshavegonebeyondthesolarsystem.（板書，講解并要求學(xué)生掌握。）beyondT:Scientistswilldomoreresearchonthespace.Soboysandgirls,youmuststudyhard,andtryyourbesttomakeacontributiontotheresearchoneday.Doyouthinkso?Ss:Yes,wewillstudyhard.T: OK.Next,let’sreadthetexttolearnmoreaboutthesolarsystem..（學(xué)生打開課本，聽1a錄音并跟讀，回答下列問題。）T:Boysandgirls,let’slistentothetape.Readafterit,thenanswerthefollowingquestions:（幻燈片出示問題。）Hasanybodyfoundlifeonotherplanets?What’scalledthesolarsystem?（學(xué)生聽后回答問題，教師核對答案，必要時可再放一遍錄音。）.（讓學(xué)生讀1a,選出恰當(dāng)?shù)臉?biāo)題。然后完成1b。）T: Read1aagain.Choosethebesttitleofthepassage,thenfinish1b。（學(xué)生完成后，核對答案。）T: Now,whichonewouldyouliketochoose?Ss:IsThereLifeoutThere?T: Yes,good.Nowlookat1b.Whocanmatchtheletterswiththeirnamesaccordingto1a?S1: (B)thesolarsystem(D)theearth(A)theuniverse(C)thesunT: OK,youdidverywell.Step3Consolidation第三步鞏固(時間:8分鐘)要求學(xué)生運用關(guān)鍵詞復(fù)述課文，鞏固1a。小組活動，完成2。1.(學(xué)生再讀1a，教師板書本課關(guān)鍵詞和短語。)T: Boysandgirls,let’sfindoutthekeywordsandphrasesofthepassage.(板書)scientists,life,millionsofyears,onotherplanets,theearth,seven,thesolarsystem,universe,launch,beyond,discover,message,information,alone.(根據(jù)板書的關(guān)鍵詞，引導(dǎo)學(xué)生復(fù)述課文。)T: Lookatthekeywordsandphrasesontheblackboard.Canyouretellthetext?Let’shaveatry.T: OK.Scientists,life,millionsofyears.Scientiststhinkthattherehasbeenlifeonearthformillionsofyears.T: Onotherplanets.Wehaven’tfound lifeon other planets yet.T: Theearth.Theearth isa planetand it goes around thesun.T: Seven.Therearesevenotherplanetsthatalsogoaroundthesun.T: Thesolarsystem,universe.Thesolarsystemisasmallpartoftheuniverse.T: Launch.Scientistshavelaunchedmanyspaceshipstoexploreotherplanetsinthesolarsystem.T: Beyond.Somespaceshipshavegonebeyondthesolarsystem.T: Discover.However,noonehasdiscoveredanylifeinspaceyet.T: Message.Whyhasnoonefromotherplanetssentusamessage?T: Information.Havetheytriedtosendinformationtous?T: Alone.Arewealone,oristherelifeonotherplanetsinspace?T:Good.Youdidverywell.Afterclassyoushouldreadthepassageagainandagainuntilyouunderstanditwell..（小組活動，完成2。）Step4Practice第四步練習(xí)（時間:10分鐘）將情態(tài)動詞的被動語態(tài)運用于1a中的部分句型，輔以練習(xí)，鞏固本單元重點語法及功能句型，完成3a和3b。鼓勵學(xué)生大膽表達，學(xué)以致用。（通過本話題內(nèi)容的拓展，復(fù)習(xí)總結(jié)本話題語法。）T:Therearesomanyplanetsinspace.Butnooneknowsifthereislifeonotherplanets.Scientistsdon’tknow.Wedon’tknow,either.Butdoyouwanttodiscoverthesecret?Ss:Yes,wedo.T:Sowhatcanbedonetofindoutthetruth?Moresatellitesmustbesentintospace.Morescientificresearchshouldbedone.Otherplanetsmaybevisitedinthefuture.…（學(xué)生會有許多奇思妙想，要允許他們大膽表達，但及時提醒他們用情態(tài)動詞+被動語態(tài)的句型結(jié)構(gòu)，然后總結(jié)他們的回答或及時記錄其中相關(guān)的句子，板書后總結(jié)語法。）Moresatellitesmustbesentintospace.Morescientificresearchshouldbedone.Otherplanetsmaybevisitedinthefuture.…modalverb+be+P.P..（出示練習(xí)，鞏固含有情態(tài)動詞的被動語態(tài)，并學(xué)習(xí)4中的生詞。）T:Now,pleasechangethefollowingsentencesintothepassivevoice.Don’tforgetthemodalverbs,andputthemintherightplaces.（用幻燈片呈現(xiàn)以下題干，請5名學(xué)生在黑板上做改寫練習(xí)。其他學(xué)生同時在練習(xí)本上做。然后再用幻燈片依次呈現(xiàn)答案。師生核對答案。）⑴Wecanseemanystarsintheskyonafineevening.—Manystarscanbeseenintheskyonafineevening.（2）Youmayfindlifeonotherplanetsoneday.—Lifemaybefoundonotherplanetsoneday.⑶Youshouldwritetheanswersonaseparatepieceofpaper.—Theanswersshouldbewrittenonaseparatepieceofpaper.⑷Weshouldhandinourhomeworktomorrow.—Ourhomeworkshouldbehandedintomorrow.（5）Thehumanbeingsmustn'tthrowgarbageintospace.—Garbagemustn'tbethrownintospace.（板書解釋畫線生詞及短語，并要求學(xué)生掌握。）separatehandin.（復(fù)習(xí)本話題的語法重點和重要句型。完成3a和3b。）Step5Project第五步綜合探究活動（時間:6分鐘）小組活動，以本單元Space