9b unit1Word文件下载.docx
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9b unit1Word文件下载.docx
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3、识别并列出地球生活与火星生活的不同之处。
情感、态度、价值观:
培养学生的环保意识。
重点难点
了解火星地理、环境背景,获取一定的信息,完成课文理解以及书后练习。
学情分析
学生具备一定的地理以及环保的常识,但是独立理解科普以及科幻的文章还是有一定困难,需要教师先对课文背景知识进行讲解与引导,并帮助学生分析课文结构和大意。
教学方法
任务型教学
教具准备
多媒体课件
教学步骤
教师活动
学生活动
个性化设计
Step1Pre-reading
T:
Everyoneknowsthat China haslaunchedChang’eIintospace.That’sreallyexciting.ItcanhelpustoknowmoreaboutMoon.HaveyoueverthoughtoflivingonMoonorsomeotherplanetsWeareusedtolivingonEarth,butsomepeoplearethinkingaboutmovingtootherplanets.WhyLet’slookatsomepicturesfirst.(PPT)
1.Lead-in
Whatcanyoufindfromthepictures
—WhatproblemsdoesEarthhave
ThepicturesshowthatEarthhastwoproblems:
oneisthelargepopulation(It’scrowded),theotheristheseriouspollution(It’spolluted).
NowEarthiscrowedandpolluted.WhatshallwedoSomescientistssaythereisabetterworld—Mars.(PPT)DoyouknowtheplanetMarsAndbeforewestarttoreadthearticleMars.Let’shavealookatthesenewwordsfirst.
PresentthepictureofMarsandaspacecraft.
Say:
HowcanwetraveltoMars(wecantraveltoMarsbyspacecraft.)
Teach“spacecraft”
SpacecraftsaretooslowtotakesomanypeopletoMarsatthemoment.Butbytheyear2100,wecantraveltherebyspaceshuttles.Spaceshuttles
Presentapictureofspaceshuttles(PPT)
2.Pre-reading
Boysandgirls,howmuchdoyouknowaboutMarsDoyouitscolor,itssizeandsomeotherinformationNowletmeshowyoumyresearchonMars.(PPT)
1)ThecolorofMars:
red;
2)Thesize:
aboutone-halfthediameterofEarth;
3)Location:
It’sbetweenEarthandJupiterinoursolarsystem.
4)Itsmoons:
PhobosandDeimos
5)Surface:
ThesurfaceofMarsisalittlelikethesurfaceofEarth.
6)Temperature:
Thelowesttemperaturewillbe-133℃(degreescentigrade)andthehighestwillbe27℃(PPT)
(Presentmorewordsandexpressions)MarsissuchaplanethowwillpeoplelivethereThefirstsettlershavetowearspacesuitand hemet topreventlaserlight.Peoplecaneasilyfloatbecauseofthelow-gravity.Sotheywearspecialbootstomakethemselvesheavier.Peoplecanliveindomes.ItissaidthatMarswillturnintoanotherblueearthinthefuture.Ithinkpeoplecanlivemorecomfortablebythen.
NowyouhavelearnedsomethingaboutMarsfrommyresearch.ButisthereanythingelseyouwanttoknowaboutMars
PleasefillintheblankswiththecorrectwordsaccordingtothewholesentenceandtheEnglishexplanationinthebrackets.(PPT)
OK.Let’schecktheanswerstogether.
1)Alargebodyinspacethatmovesaroundthestar,e.g.,thesunmeansplanet.
2)Apowerthatkeepsusfromfloatingintheairmeansgravity.
3)Avehicledesignedfortravelinspacemeansspacecraft.
4)Peoplewhogotoliveinanewplacemeansettlers.
5)Growandimprovemeansdevelop.
6)Machinesthatcandotasksunderthecontrolofcomputermeanrobots.
7)Smallroundpiecesofmedicinemeanpills.
Nowreadthenewwordsafterme.(2遍)
Newwords:
planetgravityspacecraftsettlersdeveloprobotspills
WhatisthefastestwaytolearnmoreaboutMarsThat’ssearchingtheInternet.Nowlookatthekeywords.Guesstheirmeaningsfirstandthenusethesearchenginestohelpyou.TrytofindtheinformationaboutthemontheInternet.(PPT)
1)crowdedplanet:
ThepopulationonEarthisaboutbillionin2007.It’sstillincreasingquickly…populationheremeansthenumberofpeople.(PPT)
2)spaceshuttles:
Theyarenewkindsofspacecraftwhichcantravelfasterinspace.(PPT)
3)speedboots:
Theyarespecialshoesthatcanmakeyouwalkfasterinspace.(PPT)
4)spacehome:
It’saspecialroundhouseinspace.(PPT)
5)robotsettlers:
Settlersarethepersonswhomovetoanewplace./MayberobotswillmovetoMarsandliveonitfirst.(PPT)
6)onlineteacher:
Theteacherwhocanhelpyouatanytimeandanyplaceinanon-lineschoolsiscalled‘e-teacher’.(PPT)
Step2While-reading
1.Skimming
Nowwouldyoupleaseopenyourbooksatpage8Readthearticlequicklyandfindoutthekeywordofeachparagraph.Itcanbeawordorsomewords.Youdon’thavetoreaditwordbyword.Justskimit.Thiskindofreadingskilliscalledskimming.
OK,boysandgirls.Let’schecktheanswersnow:
(PPT)
Para 1
Crowded,polluted(population,pollution)
Para 2
Transport
Para 3
Food,waterandair
Para 4
Gravity
Para 5
Home
Para 6
School
Para 7
Food
2.Scanning
That’sveryeasyforyou,right.Readeachparagraphagain,thistimeyoushouldbemorecarefulandpaymoreattentiontothedetails.Whilereadingthearticle,pleasefindouttheanswerstothequestions.It’sanotherkindofreadingskillcalledscanning
Now,boysandgirls,pleaselookatthescreenhere,let’schecktheanswers.(PPT)
※Transport(PPT)
1)WhatvehicledopeopleusetoMarsatpresentAndhowlongdoesittake
(Spacecraft.Months.)
2)WhatvehiclemaypeopleusetogotoMarsinthefuture
Andhowlongwillittake
(Spaceshuttles.Onlyaveryshorttime.)
※air,water,food(PPT)
3)Whatwillscientistsdotosolvetheproblemsoffood,waterandair
(ScientistswilldevelopplantsthatcangrowonMarsandproducethefood,waterandoxygen.)
4)WhatwillfoodonMarsbelike
(Maybethefoodwillbeintheformofpillsandwillnotbeastastyastheyaretoday.)
※Gravity(PPT)
5)IsgravityonMarsabigproblemWhy
(Yes,itis.BecausethegravityonMarsisthree-eighthsofthegravityonEarth.)
6)Whatmayhappenthen
(Peoplemayjumphigheasilyandfloatawayintospace.)
7)Whatkindofshoesshouldpeoplewear
(Peopleshouldwearspecialbootstomakethemselvesheavier.)
※Home(PPT)
8)Whatkindofhousemaypeoplelivein
(Aspecialdomewith10bedroomsishighlypossible.)
9)Whowilldomostofourwork
(Robotswilldomostofourwork.)
※School(PPT)
10)WhatkindofschoolwillstudentsstudyinAndwhatdotheycalltheirteacher
(Studentscanstudyinonlineschoolsandtheycalltheirteacher‘e-teacher’.)
Well,youreallydidagoodjobtoday.FromthereadingweknowthatlifeonMarsisverydifferentfromthatonEarth.Pleasecomparethesedifferencesandfillintheformbelow(PPT)
HaveyoufinishednowLet’schecktheanswerstogether.
Step3Post-reading
1.Fillintheblanks(PPT)
Earthtoday
Marsin2100
pollutedandcrowded
1
Spacecraftareslow.
2
Gravityisnotaproblemforus.
3
Peoplecanwearmanytypesofshoes.
4
Peopledonothavemuchspace.
5
Wetakeexamsatschool.
6
Wehavemanykindsoffoodwithdifferenttastes.
7
Keys:
1)cleanandhaslotsofspace
2)Spaceshuttlestravelathalfthespeedoflight.
3)onlyaboutthree-eighthsofthegravitythatwehaveonEarth
4)Peoplewearspecialboots.
5)Peopleliveinadomewith10bedrooms.
6)Wetakeexamsinonlineschools.
7)Mealsarejustpills.
T:
Congratulations!
You’vegotalltherightanswers.Youknowevery‘coinhastwosides’.HerearesomegoodpointsandbadpointsoflivingonMars.Wecallthe‘goodpoints’“advantages”and‘badpoints’“disadvantages”.Pleaselookatthescreenandfillintherightwords.
OKLet’schecktheanswersnow.
Advantages
※It’snot_______or________.
※The________ismoreconvenient.
※Peoplewillwearspecial_____
※Peoplewillhave______space.
※______willdomostofourwork.
※We’llhavemoretimefor_______.
※Studentswillstudyin______schools.
1crowdedpolluted2transport3boots4more5Robots6hobbies7online
Disadvantages:
※Low_______willbedangerous.
※Fooddoesnottaste_____.
※Spacetravelmakepeoplefeel________.
※It’stoo___tostayoutside.
※It’stoo____awayfromfriendsonEarth.
1gravity2good3ill/sick4cold5far
Nowwouldyoupleaseopenyourbooksatpage11oftheStudents’Book.PleasecompleteExerciseC1onpage11
.HaveyoufinishedthemLet’schecktheanswers.(PPT)
1a2b3c4c5b6b7a8b
Welldone,you’verememberedsomuchaboutMars.DoyouhaveanydifficultieswhilereadingLet’slookatsomesentencestogether.
Step4Explainsomeimportantsentences
1Therewillbevariousdesignsforsettlerstochoosefrom.将有许多种设计可供移居者选择。
tochoosefrom…“从……中挑选”。
.我有很多双鞋子可以选择,但我决定不了选哪双。
Ihavemanypairsofshoes______(tochoosefrom),butIdon’tknowwhichpair______.(tochoose)
2.Thejourneymighttakeonlyaveryshorttimeinspaceshuttlesthattravelathalfthespeedoflight.用以光速一半速度飞行的太空穿梭机进行旅程可能只花很短的时间。
分析:
此句是that连接的定语从句。
that引导的定语从句修饰先行词spaceshuttles,从句中的动词的人称和数由先行词spaceshuttles决定。
3.ComparedwithlifeonEarth,lifeonMarswillbebetterinmanyways.
与在地球上的生活相比,火星上的生活在很多方面将会更好.
comparewith…意思是“与……做比较”。
在句中是过去分词短语作状语,此时with和to可通用。
.与我们的那条路相比,这条路繁忙得多。
Thisro
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