2024九年級英語下冊Unit4LifeonMarsPeriod3Grammar課件牛津譯林版

Period3GrammarUnit4

LifeonMarsAUsingadverbialclausesorsimplesentencesWecanrewritesomeadverbialclausesinsimplesentenceswithprepositionalphrasesbeginningwithattheageof,becauseofandwithout.NeilArmstrongreceivedhisstudentpilot’slicencewhenhewas16.→NeilArmstrongreceivedhisstudentpilot’slicenceattheageof16.Peoplemightfloatinspacebecausethegravityislow.→Peoplemightfloatinspacebecauseofthelowgravity.Humanscannotsurviveifthereisnofood,wateroroxygen.

→Humanscannotsurvivewithoutfood,wateroroxygen.LearningaboutouterspaceDanieliswritingaboutvisitinganotherplanet.Helphimrewritethesentencesusingthewordsinbrackets.1.NeilArmstrongtookhisfirstflightwhenhewasonlysix.(attheageof)____________________________________________________NeilArmstrongtookhisfirstflightattheageofsix.2.YuriGagarinbecamethefirstmantogointoouterspaceattheageof27.(when)________________________________________________________________________________________________________3.PeoplemightmovetoanotherplanetinthefuturebecausethepopulationontheEarthisincreasingrapidly.(becauseof)________________________________________________________________________________________________________YuriGagarinbecamethefirstmantogointoouterspacewhenhewas27.PeoplemightmovetoanotherplanetinthefuturebecauseoftherapidincreaseinthepopulationontheEarth.4.Ifthereisnofreshfood,mealswillnotbeastastyastheyaretoday.(without)_______________________________________________________5.ItwouldbefunnytoplayfootballonMarsbecauseofthelowgravity.(because)______________________________________________________________________________________________________________Withoutfreshfood,mealswillnotbeastastyastheyaretoday.ItwouldbefunnytoplayfootballonMarsbecausethegravityislow.6.Withoutspecialboots,youcannotwalkonMars.(if...not)____________________________________________________

Ifyoudonotwearspecialboots,youcannotwalkonMars.BUsingobjectclausesorsimplesentencesWecanrewritesomeobjectclausesinsimplesentenceswithprepositionslikeofandabout.ThesmellofthepillsremindsthemthatfoodontheEarthistasty.→ThesmellofthepillsremindsthemofthetastyfoodontheEarth.Aretheysurethatspacetravelwillbeveryfast?→Aretheysureaboutthefastspeedofspacetravel?AbouttheplanetMarsMillieknowslittleabouttheplanetMars.SheisaskingDanielformoreinformation.RewriteMillie’ssentencesusingthewordsinbrackets.Millie:(1)AreyouawarehowfarMarsisawayfromtheSun?

Daniel:Yes.Marsisabout142,000,000milesawayfromtheSun.IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.

①M(fèi)illie:(2)ArescientistsinagreementthatlivingonMarswouldbepossibleforhumansinthefuture?②Daniel:No.Butthey’reworkinghardtolearnmoreaboutMars.溫馨提示：此符號表示“考點(diǎn)精講點(diǎn)撥”鏈接。名詞形式possibilityMillie:(3)DotheythinkthatthelowgravityonMarsmightbeaproblem?Daniel:Yes,theydo.Millie:(4)AreyouawarewhattransportcouldbelikeonMars?Daniel:ItcouldbemuchbetterthanthatontheEarth.However,scientistsaren’tsurewhetherpeoplecouldgrowplantsonMars.Millie:(5)IwonderhowmanypeoplewouldliketomovetoMars.(6)IthinkpeopleshouldknowthatlifeonMarswouldbedifferentfromthatontheEarth.1.Areyouaware___________________________________(distance)?2.Doscientistsagree_______________________________________________________________________________________(possibility)?3.Havetheythought________________________________________(problem)?4.Areyouaware___________________________________(transport)?ofthedistancebetweenMarsandtheSunabout/withthepossibilityoflivingonMarsforhumansinthefutureabouttheproblemofthelowgravityonMarsofthetransportonMars5.Iwonder________________________________________________________________________________________________(number).6.Ithinkpeopleshouldknow________________________________________________________________________________(differences).aboutthenumberofpeoplewhowouldliketomovetoMarsthedifferencesbetweenlifeonMarsandthatontheEarthCUsingdefiningrelativeclausesorsimplesentencesWecanrewritesomedefiningrelativeclausesinsimplesentenceswithprepositionslikewithandin.Peoplemightliveinhouseswhichhavehugecomfortablerooms.→Peoplemightliveinhouseswithhugecomfortablerooms.OnMarsyoumightseepeoplewhowearspecialboots.→OnMarsyoumightseepeopleinspecialboots.C1SimoniswritingaboutMars.Rewritethedefiningrelativeclausesinsimplesentenceswiththeprepositionwithorin.1.MarsisaplanetthathasanenvironmentsimilartothatoftheEarth.2.AstronautswhowearspacesuitsandhelmetsmightstayonMarsforhours.3.ItisdifficulttobreatheonaplanetthathasmuchthinnerairthanthatontheEarth.4.OnMarstheremightbepeoplewhocarryairtanksontheirbacks.C2Simonisinterestedinstoriesaboutaliens.Heevenwritestoaliens.Replaceeachoftheunderlinedpartsinhisletterwithanotherexpression.Dearaliens,Humansarethinkingaboutmovingtoanotherplanet(1)becausethepollutionontheEarthisveryserious.Manypeopleareinnodoubt(2)thatlifeonMarswouldbeveryinteresting,butIamnotsure.③WecouldnotplayfootballonMars(3)becauseofthelowgravity.Lifewouldbeboringforme(4)ifIcouldnotplayfootball.Maybethisproblemcouldbesolvedbybuildingindoorplaygrounds(5)whichhavethesamefootballfieldsasthoseontheEarth.Bytheway,wouldstrangersbewelcome?④

Ihopetohearfromyousoon.Simon考點(diǎn)精講①IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.circle/'s??kl/v.圍繞；將……圈起來n.圓圈；圈子e.g.Circlethewordsonthislistthatyourecognize.把這張表上你認(rèn)識的字圈起來。Theplanecircledtheairporttoburnupexcessfuel.飛機(jī)在機(jī)場上空盤旋以耗掉多余的燃料。Thechildrenstoodinacircle.孩子們站成一圈。考點(diǎn)1返回溫馨提示:可返回原文考點(diǎn)精講②ArescientistsinagreementthatlivingonMarswouldbepossibleforhumansinthefuture?agreement/?'gri?m?nt/n.一致，同意考點(diǎn)2agreement的相關(guān)短語：①beinagreement=agree同意；(意見或看法)一致②reachagreement=cometoagreement意見達(dá)成一致考點(diǎn)精講e.g.I’mgladweareinagreementaboutatleastonething.我很高興至少我們就一件事達(dá)成了一致。Weareinagreementwiththeirdecision.我們同意他們的決定。Thetwosidesfailedtoreachagreement.雙方未能取得一致意見。拓展：agreement作可數(shù)名詞時，意為“協(xié)定；協(xié)議”，常用短語reach/cometoanagreement意為“達(dá)成協(xié)議”。e.g.I’msurewecanreachanagreementsoon.我肯定我們很快可以達(dá)成協(xié)議。考點(diǎn)精講構(gòu)詞法記單詞“動詞＋ment”構(gòu)成的名詞：development發(fā)展enjoyment享受；令人愉快的事achievement成就excitement興奮；激動movement活動；運(yùn)動disappointment失望；令人失望的事考題1：Afterthe“doublereduction”policy（“雙減”政策）iscarriedout,myparentsandIhavereachedan___________(agree)onreadingmorebooksanddoingmoresportsatweekends.【點(diǎn)撥】句意：“雙減”政策實施后，我的父母和我在周末多讀書，多運(yùn)動上達(dá)成了協(xié)議。reachanagreement達(dá)成協(xié)議。agreement考點(diǎn)精講返回考點(diǎn)精講③Manypeopleareinnodoubt(2)thatlifeonMarswouldbeveryinteresting,butIamnotsure.doubt/da?t/n.疑問，疑惑v.懷疑e.g.Youcanaskmeifthereisanydoubt.如果有任何疑問，你可以問我?？键c(diǎn)3doubt的常用搭配：①doubtsth.懷疑某事②withoutdoubt毫無疑問③nodoubt無疑考點(diǎn)精講拓展：doubt還可作動詞，意為“懷疑”。后接名詞、代詞、if/whether/that從句等作賓語。e.g.Noonedoubtshisability.沒有人懷疑他的能力。Idoubtwhether/ifthenewonewillbeanybetter.我不敢肯定這個新的是否會好些。返回考點(diǎn)精講④Bytheway,wouldstrangersbewelcome?stranger/'stre?nd??(r)/n.外來者，陌生人e.g.Inthewoods,hemettwostrangers.在樹林里，他遇到了兩個陌生人。Hehassomestrangeideasabouttheproject.他對那個項目有一些奇怪的看法。拓展：stranger還可表示“外地人；新來者”。e.g.HeisastrangerinNewYork.在紐約他是一個異鄉(xiāng)人?？键c(diǎn)4考題2：[濱海一調(diào)]Themannextdoorisa______toBruce.Hedoesn’tevenknowtheneighbour’sname.A.strangerB.volunteerC.trainerD.teacherA考點(diǎn)精講陌生人志愿者教練教師strange的詞形變化：strangeadj.奇怪的；陌生的strangestrangern.陌生人返回簡單句和復(fù)合句之間的轉(zhuǎn)換（二）單元語法簡單句和復(fù)合句之間的轉(zhuǎn)換（二）用介詞(短語)把狀語從句轉(zhuǎn)換成簡單句由when，before，after等引導(dǎo)的時間狀語從句，可以用合適的介詞短語來代替。①由if，unless引導(dǎo)的條件狀語從句，可改為由without引導(dǎo)的介詞短語。②單元語法簡單句和復(fù)合句之間的轉(zhuǎn)換（二）用介詞(短語)把狀語從句轉(zhuǎn)換成簡單句由because引導(dǎo)的原因狀語從句，可改為由becauseof構(gòu)成的介詞短語。③（as...）as引導(dǎo)的比較狀語從句，有時可改為“beofthesame+名詞”結(jié)構(gòu)。④單元語法簡單句和復(fù)合句之間的轉(zhuǎn)換（二）用介詞把賓語從句轉(zhuǎn)換成簡單句某些動詞后的賓語從句，可以用介詞加名詞、代詞或動名詞（短語）轉(zhuǎn)化成簡單句。⑤用介詞把定語從句轉(zhuǎn)換成簡單句如果定語從句中的謂語動詞have表示“有”的含義，從句可轉(zhuǎn)換成with短語作后置定語。⑥1e.g.We’llplayfootballwhenschoolisover.→We’llplayfootballafterschool.放學(xué)后我們要踢足球。2e.g.Peoplecan’tsu