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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)yourhattoaaladyisgoodma
2、nners.对一位女士脱帽致敬是礼貌的。★____________(kill)bysharksintheseaisacommonthing.RaisingBeingkilled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或一次性的动作。如:Playingwithfireisdangerous.(泛指玩火)Toplaywithfirewillbedangerous.(指一具体动作)2.作表语☆Teachingislearning.教学相长.☆Myhobbyis__________(make)modelplanes.☆What
3、worriedthechildmostwas_________(not,allow)tovisithismotherinthehospital.makingnotbeingallowed2).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)todos
4、thItisnousecryingoverspiltmilk.覆水难收。Itisawasteoftime___________(talk)tohim.Itisimportantforme_______________(learn)English.talkingtolearn3.作宾语V-ing形式既可作动词的宾语,也可作介词的宾语。★Wewouldappreciatehearingfromyou.我们会珍惜你的来信。★Thebirdescaped______________(catch).★Ifeellike__________(join)thearmy.★Hewasafrai
5、dof____________(abandon)byus.beingabandonedbeingcaughtjoining注意:在avoid,admit,appreciate,consider,delay,enjoy,escape,excuse,finish,forgive,imagine,mind,miss,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
6、逃避冒险莫原谅忍受保持不介意注意①在want,need,require,deserve等动词之后作宾语时,常用动名词的主动式表示被动意义。Yourcarneedsfilling.你这车要充气了。Thiscitydeservesvisiting.这座城市值得光顾一下。Theproblemrequiresstudyingcarefully.这个问题需要认真研究。Thetreeswantwatering.这些树需要浇水了。②在(be)worth后面只能用动名词的主动态来表示被动意义。Hissuggestionisworthconsidering.Thebookisworthreadi
7、ng.③在allow,advise,forbid,permit等动词后直接跟动名词形式作宾语,如果后面有名词或代词作宾语,其后用动词不定式作宾语补足语。如:Wedon’tallowsmokinghere.Wedon’tallowstudentstosmoke.1.Sorry,wedon’tallow__________inthelectureroom.A.tosmokeB.smokeC.smokingD.tosmoking2..Theydon’tpermit__________noisehe