Unit4Topic2SectionC-九年級英語上冊課件

Unit4AmazingScienceSectionCTopic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.(

)1.—Haveyouever_____toTibet?—Yes,Ihave.Andthescenerytheremademevery_____.A.been;excitingB.gone;excitedC.been;excitedD.gone;exciting(

)2.—Look,whatanicegarden!—Yes.It_____everyday.A.hasbeencleanedB.iscleanedC.isbeingcleanedD.wascleaned(

)3.Abridgewill_____acrosstherivernextyear.A.bebuiltB.builtC.isbuiltD.build(

)4.Tomakeourcitymorebeautiful,rubbish_____intotheriver.A.needn’tbethrownB.mustn’tbethrownC.can’tthrowD.maynotthrowCReviewBABPre-readingNewwordsWhatdoyouknowaboutMars?Whatdoesitlooklike?Aball.Whatcolorisit?Redandorange.Marsisthefourthplanetfromthesuninoursolarsystem.ItisnamedafterMars,theRomangodofwar.benamedafter以......命名

YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.tell辨別

CanwereachtheMarsnow?IstheearthfarfromMars?1964年11月，美國向火星發(fā)射“水手4號”(mariner4)飛船。1965年7月15日，美國的“水手4號”飛船接近火星，從距離火星1萬公里處拍攝了21幅照片.1971年11月，美國發(fā)射的“水手9號”(mariner9)飛船進入火星軌道，成為火星的第一顆人造衛(wèi)星。1975年，美國向火星發(fā)射“海盜1號”、“海盜2號”宇宙飛船。1976年7月和8月，美國“海盜1號”(viking1)、“海盜2號”(viking2)飛船的著陸器分別在火星成功著陸。While-reading1a_____1.Marslookslikearedball._____2.ThetemperatureonMarsisveryhigh._____3.Marsismuchlargerthantheearth._____4.Marsistoofarawayforustoreach.Readandunderstand.

LookatthepicturesandpredictwhichstatementsaretrueaboutMars.Thenreadthepassagequicklyandchecktheanswers.TFFFRead1aandfindoutthenumberinthetext.53%aswideas228millionkilometersabouttwo-fifthsasstrongas90kilos/36kilos－138℃——28℃0.13%betweenminusonehundredandthirty-eightdegreecentigradeandtwenty-eightdegreecentigradezeropointonethreepercenttwentydiameterdiameterdiameterdistancegravityweightemperatureoxygenFastreadingRead1aagainandwritedowntheinformationaboutMars.DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1bWatchandfollowCarefulreadingParagraph1WhatdoyouknowaboutMars?Whatdoesitlooklike?knowabout

了解

looklike

看起來像lookthesame

看起來一樣

MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafaterMars,theRomangodofwar.CarefulreadingParagraph2太陽系benamedafater“以......命名”，是被動語態(tài)羅馬戰(zhàn)神Marsismuchsmallerthantheearth.Itsdiameteris53%aswideasthatoftheearth.CarefulreadingParagraph2Marsgoesaroundthesunatadistanceofabout228millionkilometers.直徑as+adj./adv.+as和...一樣...圍繞太陽轉(zhuǎn)以......的距離YoucantellwhichplanetisMarsbecauseitisbrightred

inthenightsky.Itlookslikearedandorangeball.It’sverybeautiful.tell辨別

CarefulreadingParagraph2CarefulreadingParagraph2Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.becoveredwith被......覆蓋storm

n.風暴，暴風雨CarefulreadingParagraph2ThegravityonthesurfaceofMarsisabouttwo-fifths

asstrongasitisonearth.gravity[?gr?v?ti]

n.重力，引力two-fifths=twofifths五分之二（分子基數(shù)詞，分母序數(shù)詞，分子大于1時，分母加s）分數(shù)/百分數(shù)/倍數(shù)+as...as（as...as中間的adj./adv.用原級）“......是......的幾分之幾/百分之幾/幾倍”eg.Thepopulationofthiscityistwiceaslargeasthatofthatcity.練習(xí)：1._____thestudentsinourclasshavebeentoBeijing.A.Two-thirdsB.Second-thirdC.Two-threeD.Two-threes2.Ourclassroomistwiceas_____astheirs.A.largerB.largestC.morelargeD.largeADCarefulreadingParagraph2Soaperson(whoweighs90kilosonearth)

weighsonly36kilosonMars.定語從句weigh[we?]v.重，有……重CarefulreadingParagraph2ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%oxygen.minus/negativeonehundredandthirty-eightdegreeCelsius[?selsi?s].

Ican’tbreathe.CarefulreadingParagraph2Ittakesaspaceshipabouteightmonthsto

reachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.ScientistsarestillsearchingformoreinformationaboutMars.Ittakessb.sometimetodosth.“花某人多少時間做某事”eg.Ittakesmeanhourtofinishmyhomeworkeveryday.練習(xí)：Ittakesaspaceshipabouteightmonths_________(reach)Marsfromtheearth.toreachbeclose/nextto離......近鏈接：befarfrom離......遠searchfor尋找“到達”：reach+地點=getto+地點=arrivein+大地點/arriveat+小地點

Post-readingDiscussthecrazyquestionswithyourpartnerandstateyourreasons.1cRead2andanswerthequestions.(1)Whoisthise-mailfromandto?(2)Howlongdidittakethemtogetthere?(3)Dideverythinggowellduringthejourney?ItisfromUncleStephentoKangkang.

Morethantwoyears.No,itdidn’t.

HiKangkang,Ithasbeentwodays_________(since,from)welandedonMars.It_________(cost,took)usmorethantwoyearsto_________(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_______(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.______________(What’smore,What’sworse),ourwatersupplieswereverylow.Wehadtolimittheuseofwaterduring_________(those,these)days.Sowehadashowereverysixweeks.Wewillspendanothersevenhundredandsixty-threedaysonMars.__________(How,What)alongtime!Ioftenmissthefamily,buttheexcitementofbeingonMarsisworthit!Wishmeluck!Yours,UncleStephensincetookgetquiteWhat’sworsethoseWhat2beworthdoingsth.值得做某事clothingfoodanddrinksweathertransportation…Writebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.3aWorkinpairs.Checkyourpartner’se-mailanduseyourknowledgeofMarstoanswerthequestionsforUncleStephen.3bDearUncle,I’mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?Iamlookingforwardtoyoure-mail!Goodluck!

Yours,

KangkangYoucanwriteitlikethis:1.IthasbeentwodayssincewelandedonMars.

自從我們在火星上著陸已經(jīng)有兩天了。

考點：Itis+時間段+since+過去時從句=Ithasbeen+時間段+since+過去時從句=have/has+延續(xù)性動詞或狀態(tài)短語+since+過去時/for+一段時間eg.

IthasbeentwodayssincewelandedonMars.=ItistwodayssincewelandedonMars.=WehavebeenonMarssincetwodaysago.=WehavebeenonMarsfortwodays.Languagepoints

及時練習(xí)：寫出下面句子的同義句。1.Itis5dayssinceIborrowedthebookfromthelibrary.=It__________5days_____Iborrowedthebookfromthelibrary.=I__________thebookfromthelibrary_____5daysago.=I__________thebookfromthelibrary_____5days.2.Thebabyfellasleep10minutesago.=__________10minutes_____thebabyfellasleep.=It__________10minutessincethebabyfellasleep.=Thebaby_______________for10minutes.=Thebabyhas_______________10minutesago.LanguagepointshasbeensincehavekeptsincehavekeptforItissincehasbeenhasbeenasleepbeenasleepsince()1.Canyou_____thedifferencesbetweenthetwowords?

A.tellB.speakC.talkD.judge()2.Theexamwassodifficultthatonly_____ofthestudentsinourclasspassedit.

A.two-fifthsB.two-threeC.second-fifthsD.fifths-second()3.Scientistsaredoingexperimentsinorder_____theMarssoon.

A.toexploreB.exploreC.toexploringD.thatexplore

()4.Ittakesusalongtime_____abikethere.

A.rid