九年级英语下册Unit4LifeonMarsGrammar课件(新版)牛津

Unit4LifeonMars

GrammarUsingadverbialclausesorsimplesentences

NeilArmstrongreceivedhisstudentpilot’slicence

becauseofthelowgravity.withoutfood,wateroroxygen.whenhewas16.whenhewas16.

attheageof16.Peoplemightfloatinspace

Humanscannotsurvive

becausethegravityislow.

becausethegravityislow.

ifthereisnofood,wateroroxygen.

ifthereisnofood,wateroroxygen.Sentences时间状语从句可借助介词短语转化为简单句。IcouldswimwhenIwaseightyearsold.Hewenthomeafterhefinishedhiswork.状语从句和简单句之间的转换

Icouldswimattheageofeight.Hewenthomeafterfinishinghiswork.because引导的原因状语从句用短语becauseof可转换成简单句。

Hewaslateforschoolbecauseitrainedheavily.Hewaslateforschoolbecauseoftheheavyrain.状语从句和简单句之间的转换Youcannotenterthecinemaifyoudon’thaveaticket.状语从句和简单句之间的转换Youcannotenterthecinemawithoutaticket.

ifnot引导的条件状语从句可借助without短语转化为简单句。1.NeilArmstrongtookhisfirstflightwhenhewasonlysix.Learningaboutouterspace1.NeilArmstrongtookhisfirstflightattheageofsix.2.YuriGagarinbecamethefirstmantogointoouterspace

attheageof27.

2.YuriGagarinbecamethefirstmantogointoouterspace

whenhewas27.

3.PeoplemightmovetoanotherplanetinthefuturebecausethepopulationontheEarthisincreasingrapidly.3.PeoplemightmovetoanotherplanetinthefuturebecauseoftherapidlyincreasingpopulationontheEarth.4.Ifthereisnofreshfood,mealswillnotbeastastyastheyaretoday.

4.Withoutfreshfood,mealswillnotbeastastyastheyaretoday.5.ItwouldbefunnytoplayfootballonMarsbecauseofthelowgravity.5.ItwouldbefunnytoplayfootballonMarsbecausethegravityislow.6.Withoutspecialboots,youcannotwalkonMars.6.Ifthereisnospecialboots,youcannotwalkonMars.sothat引导的目的状语从句可用“inorderto”或“soasto”转换为简单句。Hegotupearlysothathecouldcatchtheearlybus.Hegotupearlyinorderto/soastocatchtheearlybus.状语从句和简单句之间的转换Thishallissolargethatitcanhold2000people.Thishallislargeenoughtohold

2000people.sothat引导的目的状语从句可用inorderto或soasto转换为简单句。so…that…引导的结果状语从句的可用enoughto结构转换为简单句。UsingobjectclausesorsimplesentencesThesmellofthepillsremindsthemthatfoodontheEarthistasty.

Aretheysurethatspacetravelwillbeveryfast?

ThesmellofthepillsremindsthemofthetastyfoodontheEarth.Aretheysureaboutthefastspeedofspacetravel?Sentences可以用介词如of、about等将宾语从句转换为简单句。

Changethesentencesintosimplesentences1.AreyoucertainthatTomissatisfiedwiththeplan?2.Idon’tknowwhichoneIcanbuy.Idon’tknowwhichonetobuy.AreyoucertainaboutTom’ssatisfactionwiththeplan?3.IheardshewassinginginEnglish.IheardhersinginginEnglish.4.ThephotosremindmethatIhavetravelledtotheUK.ThephotosremindmeofmytriptotheUK.5.DoyouunderstandwhatIsaid?Doyouunderstandmywords?1.Areyouaware___________________________________(distance)?2.Doscientistsagree____________________________________________________(possibility)?3.Havetheythought_______________________________________(problem)?4.Areyouaware_____________________(transport)?5.Iwonder___________________________________________________(number).6.Ithinkpeopleshouldknow__________________________________________________(differences).ofthedistancebetweenMarsandtheSunwihthepossibilityoflivingonMarsforhumansinthefutureabouttheproblemofthelowgravityonMarsofthetransportonMarsaboutthenumberofpeoplewhowouldliketomovetothedifferencesbetweenlifeonMars

andthatontheearth

MarsAbouttheplanetMarsUsingdefiningrelativeclausesorsimplesentences

Peoplemightliveinhouseswhichhavehugecomfortablerooms.

OnMarsyoumightseepeoplewhowearspecialboots.

SentencesPeoplemightliveinhouseswith

hugecomfortablerooms.OnMarsyoumightseepeoplein

specialboots.可以用介词如with、in等将定语从句转换为简单句。MarsisaplanetanenvironmentsimilartothatoftheEarth.2.AstronautsspacesuitsandhelmetsmightstayonMarsforhours.3.ItisdifficulttobreatheonaplanetmuchthinnerairthanthatontheEarth.4.OnMarstheremightbepeopleairtanksontheirbacks.CuriousaboutMarsChangerelativeclausesintosimplesentenceswiththathaswhowearinthathaswithwithwhocarrythathaswhowearthathaswhocarry

Changethesentencesintosimplesentences1.ThegirlwhoiswearingahatisLucyKing.2.Iprefertostayinahotelroomwhichhasaseaview.Iprefertostayinahotelroomwithaseaview.ThegirlwithahatisLucyKing.3.ThemanwhowearsablueshirtisourEnglishteacher.ThemaninablueshirtisourEnglishteacher.4.

Doyouknowthegirlwhoisholdingtwobooksinherhand?Doyouknowthegirlwithtwobooksinherhand?5.Wesawtheglassesthatwereonthetablefalloffontothefloor.Wesawtheglassesonthetablefalloffontothefloor.ReplaceeachoftheunderlinedpartswithanotherexpressionDearaliens,HumansarethinkingaboutmovingtoanotherplanetbecausethepollutionontheEarthisveryserious.ManypeopledonotdoubtthatlifeonMarswouldbeveryinteresting,butIamnotsure.WecouldnotplayfootballonMarsbecauseofthelowgravity.LifewouldbeboringformeifIcouldnotplayfootball.MaybethisproblemcouldbesolvedbybuildingindoorplaygroundswhichhavethesamefootballfieldsasthoseontheEarth.Bytheway,wouldstrangersbewelcome?Ihopetohearfromyousoon.Simon___________________________________________________________________________________________________________________________________________________________________________________Dearaliens,HumansarethinkingaboutmovingtoanotherplanetbecausethepollutionontheEarthisveryserious.ManypeopledonotdoubtthatlifeonMarswouldbeveryinteresting,butIamnotsure.WecouldnotplayfootballonMarsbecauseofthelowgravity.LifewouldbeboringformeifIcouldnotplayfootball.Maybethisprob