【原创课件】仁爱英语九年级上Unit 4 Topic 2 Section C

Unit4AmazingScience

Topic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.

SectionC

Whatareyougoingtobewhenyougrowup？Why?Iwanttobeanastronauttoexploretheuniverse.HowmuchoftheMarsdoyouknow?HumanbeingshavelaunchedseveralMarsprobetoexploreMars.[lɔ:ntʃ]=send,发射火星探测器It’sinthesolarsystem.[ˈsəʊlə(r)]太阳的太阳系MarsisthenameoftheRomangodofwar.古罗马的罗马战神[ˈrəʊmən]Canyouguess?IsthediameterofMarslargerorsmallerthanthatoftheearth?[daɪˈæmɪtə(r)]直径Canyouguess?IstheregravityonMars?重力，引力[ˈgrævəti]Howmuchdoyouweighon

Mars?Isitasmuchasontheearth?[weɪ]重，有……多重Canyouguess?Istheresandstormonars?风暴，暴（风）雨[stɔ:m]1aReadandunderstand.

LookatthepicturesandpredictwhichstatementsaretrueaboutMars.Thenreadthepassagequicklyandchecktheanswers._____1.Marslookslikearedball._____2.ThetemperatureonMarsisveryhigh._____3.Marsismuchlargerthantheearth._____4.Marsistoofarawayforustoreach.TFFF1bRead1aagainandwritedowntheinformationaboutMars.

DiameterColorShape53%aswideasthatoftheearthredandorangeaball1bRead1aagainandwritedowntheinformationaboutMars.

ClimateGravityDistancefromthesunduringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1.MarsisnamedafterMars,theR…after…以……命名人们以这座山来命名这座城市。People_______thecity_______themountain.他以其父亲的名字命名。He___________________hisfather.LanguagePointsnamedafterwasnamedafter2.Itsdiameteris53%aswideasthatoftheearth.它的直径是地球直径的53%。

ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.火星表面的引力大约是地球引力的五分之二。

A+be+

倍数/分数/百分数+as+adj./adv.+as……是…的几倍/几分之几/百分之几这个盒子是那个盒子的4倍重。Thisboxis______________________thatone.他跑得快我两倍。Heruns_____________________I.

LanguagePointsfourtimesasheavyastwiceasfast/quicklyas3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太阳约228000000千米处环绕着太阳转。

atadistanceof…相隔……at/fromadistance在远处警察远远地跟着他。Thepolicefollowedhim________________.LanguagePointsatadistance4.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.Ittakes/tooksb.+时间+todosth.我们花了半个多小时穿过街道。_______usmorethanhalfanhour______________thestreet.LanguagePointsIttooktowalkthrough

5.Scientistsarestillsearchingformoreinformation

aboutMars.科学家们正在对火星进行更多的探索。

searchfor:寻找、搜索某人/某物Allnighttheysearchedforthelostboy.search…for…表示搜查某一对象的目的是要找到什么ShesearchedmanyshopsforJim’sgift.search意为“在……搜查”或“搜身”,是个及物动词，后面直接跟“被搜查的对象”。Mr.Smithsearchedeveryroominthehouse.LanguagePointsKeywords

Mars,fourth,benamedafter,diameter,aswideas,atadistanceof,tell,because,brightred,ball,storms,gravity,temperature,oxygen,eightmonths,closestto,searchingforRetell1aMars,the_______planetofthesolarsystem,goesaroundthesunata_________ofabout228millionkilometers.Its_______is53%aswideasthatoftheearth.Itlookslikea_____and_______ball.It’sverybeautiful.Butduring______and_______,strong__________cancoverthewhole__________ofMars.Thegravityonthesurfaceofitisabout________as________asitisonearth.Exercisefourthdistanceredorangespringsummerstormssurfacetwo-fifthsstrongdiameter1cDiscussthecrazyquestionswithyourpartnerandstateyourreasons.

1.DoesMarshaveagoodclimateforplants?2.IsMarsausefulplacetodryfruit?3.IsMarsagoodplaceforhumanbeingstolive?4.IsMarsacomfortableplaceforheavypeople?HiKangkang,Ithasbeentwodays_________(since,from)welandedonMars.It_________(cost,took)usmorethantwoyearsto_________(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_______(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.sincetookgetquite2Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.

______________(What’smore,What’sworse),ourwatersupplieswereverylow.Wehadtolimittheuseofwaterduring_________(those,these)days.Sowehadashowereverysixweeks.Wewillspendanothersevenhundredandsixty-threedaysonMars.__________(How,What)alongtime!Ioftenmissthefamily,buttheexcitementofbeingonMarsisworthit!Wishmeluck!Yours,UncleStephenWhat’sworsethoseWhat2Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.

IthasbeentwodayssincewelandedonMars.我们登上火星已经两天了。It作主语谈论时间，与since连用的常见结构有：（1）Ithasbeen+一段时间+since+从句（2）Itis+一段时间+since+从句他们已经离开很久了。__________________________sincetheyleft.=____________________sincetheyleft.LanguagePointsIthasbeenalongtimeIt’salongtimeclothingfoodanddrinksweathertransportation…3aWritebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.

3bWorkinpairs.Checkyourpartner’se-mailanduseyourknowledgeofMarstoanswerthequestionsforUncleStephen.

DearUncle,I’mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?Iamlookingforwardtoyoure-mail!Goodluck!

Yours,

KangkangYoucanwriteitlikethis:SummaryWelearn:

1.So