Unit4AmazingScience

Topic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.

SectionC

Whatareyougoingtobewhenyougrowup？Why?Iwanttobeanastronauttoexploretheuniverse.HowmuchoftheMarsdoyouknow?HumanbeingshavelaunchedseveralMarsprobetoexploreMars.[l?:nt?]=send,發(fā)射火星探測器It’sinthesolarsystem.[?s??l?(r)]太陽的太陽系MarsisthenameoftheRomangodofwar.古羅馬的羅馬戰(zhàn)神[?r??m?n]Canyouguess?IsthediameterofMarslargerorsmallerthanthatoftheearth?[da???m?t?(r)]直徑Canyouguess?IstheregravityonMars?重力，引力[?gr?v?ti]Howmuchdoyouweighon

Mars?Isitasmuchasontheearth?[we?]重，有……多重Canyouguess?Istheresandstormonars?風暴，暴（風）雨[st?: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……命名人們以這座山來命名這座城市。People_______thecity_______themountain.他以其父親的名字命名。He___________________hisfather.LanguagePointsnamedafterwasnamedafter2.Itsdiameteris53%aswideasthatoftheearth.它的直徑是地球直徑的53%。

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

A+be+

倍數(shù)/分數(shù)/百分數(shù)+as+adj./adv.+as……是…的幾倍/幾分之幾/百分之幾這個盒子是那個盒子的4倍重。Thisboxis______________________thatone.他跑得快我兩倍。Heruns_____________________I.

LanguagePointsfourtimesasheavyastwiceasfast/quicklyas3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太陽約228000000千米處環(huán)繞著太陽轉(zhuǎn)。

atadistanceof…相隔……at/fromadistance在遠處警察遠遠地跟著他。Thepolicefollowedhim________________.LanguagePointsatadistance4.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.Ittakes/tooksb.+時間+todosth.我們花了半個多小時穿過街道。_______usmorethanhalfanhour______________thestreet.LanguagePointsIttooktowalkthrough

5.Scientistsarestillsearchingformoreinformation

aboutMars.科學(xué)家們正在對火星進行更多的探索。

searchfor:尋找、搜索某人/某物Allnighttheysearchedforthelostboy.search…for…表示搜查某一對象的目的是要找到什么ShesearchedmanyshopsforJim’sgift.search意為“在……搜查”或“搜身”,是個及物動詞，后面直接跟“被搜查的對象”。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.我們登上火星已經(jīng)兩天了。It作主語談?wù)摃r間，與since連用的常見結(jié)構(gòu)有：（1）Ithasbeen+一段時間+since+從句（2）Itis+一段時間+since+從句他們已經(jīng)離開很久了。__________________________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