2018年牛津译林版九年级英语上册Unit4 Grammar课件(共18张ppt)

e.g.ItbegantorainassoonasIleftthehouse.CUsingassoonasandwheneverAssoonasmeanswhensomethinghappens,orashorttimeaftersomethinghashappened.Whenevermeansatanytime.e.g.IcanreadbookswheneverIwantto.themoment一…就…MoreaboutbasketballSimoniswritingaboutDavid’sloveforbasketball.HelpSimoncompletehissentenceswithassoonasorwhenever.1.Davidoftengoestoplaybasketball_______________schoolisover.2.HewatchestheNBA____________thereisagameonTV.assoonaswhenever3.________________hetalksaboutbasketball,hegetsexcited.4.________________helearntthattheNBAplayerswouldcometoChina,hetriedhisbesttogetaticket.WheneverAssoonas一、before,after,when,while,till,until,assoonas,whenever引导的时间状语从句中，如果主从句都指将来发生的动作，主句用一般将来时，从句用一般现在时。e.g.Shewon’tgohomeuntilshefinishesherwork.二、since+过去式（自从……），常与主句为现在完成时连用。e.g.Johnhasworkedinthisfactorysince1998.三、while（当……时）引导的时间状语从句通常要用进行时。e.g.SomeoneknockedonthedoorwhileIwaswatchingTV.四、before,after,since,till,until还可作介词，后接时间名词。e.g.before9a.m.till/untiltodaysince2009afterlunch五、当主句和从句的主语是同一个人时还可用：before/after/when/whiledoingsth.e.g.You’dbetternotlistentomusicwhiledoingyourhomework.六、assoonas引导时间状语，表示“一……就……”e.g.ItbegantorainassoonasIleftthere.七、till和until通常可以互换，但当“直到”这词用于句首或与not连用时只能用until。e.g.Theydidn’tcomebackuntilitwasdark.YaoMingwasborninShanghaiin1980.Hegothisfirstbasketball(1)_______hewasonlyfouryearsold,buthedidnotbecomeseriousaboutbasketball(2)________hewas12.whenuntilDavidiswritingaboutYaoMing,hisfavouritebasketballstar.Helphimcompletehisarticlewiththecorrectconjunctionsyouhavelearntinthisunit.YaojoinedtheHoustonRocketsin2002andbecamethebestChineseplayertohaveeverplayedintheNBA.(3)_____________hewenttotheUSA,heknewlittleEnglish,buthequicklylearntthelanguage.Thebestmomentinhiscareerwasin2004—hescored41pointsinagameagainsttheAtlantaHawks.Before/WhenWhenYaoMingwaslivingintheUSA,hereturnedtoChina(4)__________hewasneeded.HetookpartintheOlympicsin2004andin2008asoneoftheChineseathletes.(5)___________heendedhisbasketballcareer,Yaohasdonealotofcharitywork,especiallyforpoorChineseteenagers.wheneverSince/After1.Itwasquiet________thosebigtrucksstartedcomingthroughthetown.A.beforeB.afterC.untilD.unless2.Itseemedonlyseconds________theboyfinishedwashinghisface.A.whenB.beforeC.afterD.evenifChoosethebestanswer.3.Irecognizedyou________Isawyouattheairport.A.themomentB.whileC.afterD.once4.Hewasabouttogotobed________thedoorbellrang.A.whileB.asC.beforeD.when正要/刚要/将要做某事5.Severalweekshadgoneby_____Irealizedthepaintingwasmissing.A.asB.beforeC.sinceD.when6.It_____longbeforewe____theresultoftheexperiment（实验）.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know1.Reviewtheuseoftheconjunctionsinthislesson.2.Prepareforthenextlesson.