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-ingasadverbial1.HavingseenquiteafewproductionsofHamletandreadtheplaymanytimes,Iwasfullofconfidence—untilthePekingOperacametotown.Studythetwosentencesfromareadingpassage.Q:WhohadseenquiteafewproductionsofHamletandreadtheplaymanytimes?AfterIhadseenquiteafewproductionsofHamletandreadtheplaymanytimes,Iwasfullofconfidence---untilthePekingOperacametotown.现在分词作状语，相当于时间状语从句。2.Seeingthemaincharacterscomeonstage,Iwassurprised.Q:Whosawthemaincharacterscomeonstage?WhenIsawthemaincharacterscomeonstage,Iwassurprised.现在分词作状语，相当于时间状语从句。1.Knowingalotofpeopleneedmyhelp,Ibecameaneducator.Moreexamples=AsIknowalotofpeopleneedmyhelp,Ibecameaneducator.原因2.Thinkingtwice,youmightchangeyourmind.=Ifyouthinktwice,youmightchangeyourmind.条件3.Hewalkedintotheclassroom,carryingalotofbooks.=Hewalkedintotheclassroomandcarriedalotofbooks.伴随/方式4.Itrainedheavilyinthesouth,causingseriousfloodinginseveralprovinces.=Itrainedheavilyinthesouthandcausedseriousfloodinginseveralprovinces.结果5.Beingpoor,theoldmenwerequitehappy.=Thoughtheoldmenwerepoor,theywerequitehappy.让步动词的-ing形式（现在分词）作状语时，与谓语表示的动作（或状态）是同时或几乎同时发生的，有时先于谓语动词的动作发生。表示动作发生的时间、原因、条件、结果、让步、方式或伴随状况，相当于对应的状语从句。ConclusionRewritethefollowingsentenceswith–ingForm.1.WhenMikesawthegrandgateoftheSummerPalace,hefeltquiteamazed.2.Asshewasstillweak,shecouldn’tstayupforlong.3.Ileftamessageontheboardandexpressedmybestwishestomyhometown.SeeingthegrandgateoftheSummerPalace,Mikefeltquiteamazed.Beingstillweak,shecouldn’tstayupforlong.Ileftamessageontheboard,expressingmybestwishestomyhometown.值得注意的几点1.-ing形式作状语时，其逻辑主语必须与主句中的主语一致且为主动关系。1.HavingseenquiteafewproductionsofHamletandreadtheplaymanytimes,Iwasfullofconfidence—untilthePekingOperacametotown.2.Seeingthemaincharacterscomeonstage,Iwassurprised.判断以下两个句子是否正确。1.Seeingfromthehill,wefindthecityverybeautiful.2.Seeingfromthehill,thecitylooksmorebeautifultous.2.-ing形式作状语时，可以在主句之前，也可以在主句之后。1.Lookingoutofthewindow,Isawsomechildrenplayingfootball.2.Thestudentswalkedoutoftheclassroom,talkingandlaughing.一般来说，表示时间、原因、条件时位于主句之前，表示结果、方式、伴随时位于主句之后。3.-ing形式的否定形式在前面加not。1.Notrealizingthathewasingreatdanger,hewalkeddeeperintotheforest.2.Nothavingreceivedareply,hedecidedtowriteagain.4.-ing形式作状语时，前面可以加上连词或介词。1.Uponhearingthenews,hecouldn’thelpcrying.=Assoonasheheardthenews,hecouldn’thelpcrying.2.Heresignedfromthecompanybeforegoingabroad.5.不同形式1.在动词原形之后加-s主动被动时间意义一般式完成式doingbeingdonehavingdonehavingbeendone与谓语动作同时进行或紧接着发生发生在谓语动作之前一般式与完成式的区别1.在动词原形之后加-s1.Seeingthemaincharacterscomeonstage,Iwassurprised.现在分词的动作与谓语动作同时发生。2.HavingseenquiteafewproductionsofHamletandreadtheplaymanytimes,Iwasfullofconfidence---untilthePekingOperacametotown.现在分词的动作在谓语动作之前发生。Completethefollowingsentences.1.Thehospitalhasrecentlyobtainednewmedicalequipment,___________(allow)morepatientstobetreated.2._________________(work)fortwodays,Stevemanagedtofinishhisreportonschedule.3.Likeancientsailors,birdscanfindtheirway_________(use)thesunandthestars.4.___________(look)atmyclassmates’faces,Ireadthesameexcitementintheireyes.5.______________________(praise)forhisjob,Tomworkedharder.Completethefollowingsentences.1.Thehospitalhasrecentlyobtainednewmedicalequipment,___________(allow)morepatientstobetreated.2._________________(work)fortwodays,Stevemanagedtofinishhisreportonschedule.3.Likeancientsailors,birdscanfindtheirway_________(use)thesunandthestars.4.___________(look)atmyclassmates’faces,Ireadthesameexcitementintheireyes.5.______________________(praise)forhisjob,Tomworkedharder.allowingHavingworkedusingLookingHavingbeenpraisedTodayIperformedintheschoolplay.Ididagoodjob!“_______(see)allmyfamilyandfriendsintheaudienceapplaudme,I_____(feel)soconfidentandgrateful.Atfirst,Ihadn’trealizedhowmuchworkitwouldbe.Theteacherwasverystrict,_______(make)mesonervousthatIwouldforgetmylines.Ioftenstayeduplateatnight__________(practise)mypart._______(feel)extremelydiscouraged,Ialmostgaveup.Butthankstothesupportofmyteacher,parentsandfriends,Iovercamemyfears,______(know)thatIdidthebestIcould.It’sanunforgettableexperience.Nopain,nogain,asthesayinggoes.Completethejournalentrywiththecorrectformoftheverbsinbrackets.Friday15MayTodayIperformedintheschoolplay.Ididagoodjob!“_________(see)allmyfamilyandfriendsintheaudienceapplaudme,I_______(feel)soconfidentandgrateful.Atfirst,Ihadn’trealizedhowmuchworkitwouldbe.Theteacherwasverystrict,_________(make)mesonervousthatIwouldforgetmylines.Ioftenstayeduplateatnight_____________(practise)mypart.SeeingfeltmakingpractisingCompletethejournalentrywiththecorrectformoftheverbsinbrackets.Friday15May_________(feel)extremelydiscouraged,Ialmostgaveup.Butthankstothesupportofmyteacher,parentsandfriends,Iovercamemyfears,_________(know)thatIdidthebestIcould.It’sanunforgettableexperience.Nopain,nogain,asthesayinggoes.FeelingknowingCompletethejournalentrywiththecorrectformoftheverbsinbrackets.Rewritethepassageusingthe–ingform.IwenttowatchtheballetThePeonyPavilionlastnight.BecauseIthoughtballetwasmoreorlessthesameeverywhere,Iwastotallyunpreparedforitsuniquebeauty.Assoonasthecurtainrose,Iwasabsorbed.Theperformance