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1、Theuseof-ing语态时态主动形式被动形式一般式完成式(not)doing(not)beingdone(not)havingdone(not)havingbeendone二:V-ing可作主语、宾语、表语;定语、状语和宾语补足语，但不能单独作谓语。V-ing形式表示的动作与主要动词同时发生或发生在主要动词之后，用其一般式;V-ing形式表示的动作在主要动词之前发生，用其完成时，在具体应用中也常以一般式代替完成式。V-ing的用法：1.作主语★Swimmingisgoodforhealth.★___________(raise)yourhattoaaladyisgoodmanners.
2、对一位女士脱帽致敬是礼貌的。★____________(kill)bysharksintheseaisacommonthing.RaisingBeingkilled2.作表语☆Teachingislearning.教学相长．☆Myhobbyis__________(make)modelplanes.☆Whatworriedthechildmostwas_________(not,allow)tovisithismotherinthehospital.makingnotbeingallowed注意：动名词和不定式都可以作主语，动名词作主语表示一般或抽象的多次性行为，不定式作主语往往表示具体的
3、或一次性的动作。如：Playingwithfireisdangerous.（泛指玩火）Toplaywithfirewillbedangerous.（指一具体动作）2).V-ing形式和不定式都要有对称性;当主语是不定式时，表语也用不定式；反之，当主语是V-ing形式时，表语也用V-ing形式。Toseeistobelieve.=Seeingisbelieving.注意3).It’snouse(good)doingsthIt’sawasteoftimedoingsthit作形式主语,只用V-ing,不用不定式。※Itis+adj.+(forsb)todosthItisnousecryingo
4、verspiltmilk.覆水难收。Itisawasteoftime___________(talk)tohim.Itisimportantforme_______________(learn)English.talkingtolearn_____theexamwilldisappointyourparents. A.YoufailingB.YourfailingC.YoufailD.Youtofail.2._____thesamemistakeagainmadehisparentsveryangry. A.HisbeingmadeB.HehasmadeC.HehadmakingD.His
5、making3.Idon'tthinkit'smuchgood_____tohim. A.writingB.towriteC.writeD.written4.Suchbooksarenotworthy_____atall. A.ofbeingreadB.beingreadC.readingD.toread5.Itisnouse________withoutthrough_________.A.toread;understoodB.reading;understandingC.toread;understandD.read;tounderstandExercises3.作宾语V-ing形式既
6、可作动词的宾语,也可作介词的宾语。★Wewouldappreciatehearingfromyou．我们会珍惜你的来信。★Thebirdescaped______________(catch).★Ifeellike__________(join)thearmy.★Hewasafraidof____________(abandon)byus.beingabandonedbeingcaughtjoining注意：在avoid,admit,appreciate,consider,delay,enjoy,escape,excuse,finish,forgive,imagine,mind,miss,
7、practise,risk,suggest,giveup,putoff,feellike,insiston,insteadof,lookforwardto,objectto,keepon等后只接V-ing形式作宾语。避免错过少延期建议完成多联系喜欢想象禁不住承认否定与嫉妒逃避冒险莫原谅忍受保持不介意Exercises1.Thethiefenteredtheroomwithout_____. A.noticingB.bei
