Unit 4 Growing up Grammar课件 牛津译林版九年级英语上册

Unit4GrowingupGrammar时间状语从句Igotoschoolat6：00.Igotoschoolwhenyouaresleeping.时间状语时间状语从句时间状语从句：在复合句中充当时间状语的句子。时间状语从句主句连接词从句1.before2.after3.when4.while5.since6.till7.untill8.assoonas9.whenever1.before:在...之前2.after：在...之后3.when：当...时候，可接延续性动词，可接短暂性动词4.while：当...时候，只接延续性动词5.since：自从...以来，主句是完成时，从句是过去时6.till：到...为止，不能在句首7.until：到...为止，能在句首8.assoonas：一...就，主将从现9.whenever：任何时候时间状语从句主短从长延续性动词：动作发生后，这个动作能持续下去。比如run，play，draw，swim，sing，cry...（在时间状语从句中，常加ing）短暂性动词：动作发生后，这个动作不能持续下去，发生即结束。比如start，leave，die，finish...（在时间状语从句中，不加ing）无论是延续性动词还是短暂性动词，本身都有ing形式，只是在时间状语从句中，短暂性动词没有ing，延续性动词才有ing.时间状语从句1.Closethewindows______youleavetheroom,please.2.Iwenttoschool______Ifinishedmybreakfast.3.Sheaskedmeforhelp______shelostkeys.4.Iusuallyboughtsomepresents_______Iwastravelling.beforeafterwhenwhilewhen5.Theyhavebeenfriends______theywereinjuniorhigh.6.Don’twakemeup______youfinishyourwork..7.______hisdreamcametrue,Spudnevergaveup.sincetilluntillUntill8.Hewillvisityou____________hegetsthere.主短从长assoonas主将从现9.Icanreadbooks_________Iwantto.whenever时间状语从句拓展：上述连接词在引导时间状语从句时，主句和从句的主语一致，可以省略从句中的主语和be动词，构成连接词+Ving形式。TomknockedthedoorbeforeTomcameintotheroom.Tomknockedthedoorbeforecomingintotheroom.IwenttoschoolafterIfinishedmybreakfast.Iwenttoschoolafterfinishingmybreakfast.时间状语从句的复合句中，主从句的时态应遵循的原则:时间状语从句1.当主句是一般将来时，从句要用一般现在时.Amywillwaithereuntilherfathercomesback.2.当主句的谓语含有may、can、must等情态动词时，从句要用一般现在时.Whenweseethetrafficlightsturnred,wemuststop.3.当主句的谓语是want、hope、wish等动词时，从句要用一般现在时。HewantstoworkinBeijingwhenhefinishescollege.4.当主句是祈使句时，从句要用一般现在时。Don’tcrossthestreetwhenthetrafficlightsarered.5.当主句是一般过去时，从句也要用一般过去时。IstartedtolearnEnglishwhenIwasyoung.用改为同意句IgojoggingeverymorningbeforeIhavebreakfast.IfelttiredoutafterIpractisedplayingbasketballforhours.ImetPeterwhile/whenIwaswaitingatthebusstop.Ireceivedacallfrommyunclewhile/whenIwaswatchingTV.Iwasreadytogotobedwhenmyfathercamebackfromwork.Igojoggingeverymorningbeforehavingbreakfast.Ifelttiredoutafterpractisingplayingbasketballforhours.ImetPeterwhile/whenwaitingatthebusstop.Ireceivedacallfrommyunclewhile/whenwatchingTV.用填空sincetill/untiltill/untilsince

till/untiltill/until用填空assoonaswheneverWheneverAssoonas用所学的9个连词填空Whenwhile/whenBeforeafterAssoonaswheneverbeforeuntill/till1.Ilovetolistentorockmusic______Iamrunning.A．untilB．after C．sinceD．while2.Mycousinbecameacountrydoctor__hefinishedmedicalschool.A．afterB．untill C．but D．before3.Youhavetopassatest______youcangetalicense（执照）.A．whileB．after C．before D．until4.Atruefriendcanseethepaininyoureyes________everyoneelsebelievesthesmileonyourface.A.while B.becauseC.beforeD.untilPractisemore5.—Wecan’tgetonoroffabus______itismoving.—You’reright.A．unless B．beforeC．whenD．until6.—Ican’tgetonwellwithmyfamily.—Whynottalkwiththem?Youshouldcommunicate______thingsbecomeworse.A．until