Gerundxxx主动形式被动形式一般式doingbeingdone完成式havingdonehavingbeendoneI.Forms1.SubjectWritingthebookhastakenupallhissparetime.翻译:眼见为实.Seeingisbelieving.II.Functions注①:It作形式主语(nouse,nogood,fun,awasteoftime,worthwhile);或Therebeno+Ving…a.It’snogoodtalkingalotwithoutdoinganything.对此争论是浪费时间.It’sawasteoftimearguingaboutit.b.There’snojokingaboutsuchmatters.There’snosayingwhathe’llbedoingnext.There’snotellingwhathe’sgoingtodo.注②:动名词作主语与不定式作主语的区别:动名词作主语通常表示抽象的或泛指的动作,一般不与特定的动作执行者联系在一起;不定式作主语通常表示具体的动作或行为,往往与特定的动作执行者联系在一起It’snousecryingoverspiltmilk.(抽象)Herealizedthattogoonlikethiswasnouse.(具体)在实际运用中,一般可以互换,差异不大。但在下列几种情况中不能互换:a.当表语是动名词时,主语也要用动名词;当表语是不定式时,主语也要用不定式,如:Seeingisbelieving.Toseeistobelieve.c.而在It’simportant…/It’snecessary…/It’sadvisable…/It’sessential…这类句型中,只能用不定式,如:It’simportanttolearnforeignlanguages.读许多遍是很有必要的.It’squitenecessarytoreaditmanytimes.2.PredicativeTheirjobisbuildinghouses.Myfavoritesportisswimming.注:动名词作表语与不定式作表语的区别:动名词作表语时表示比较抽象的一般行为、习惯;不定式作表语时表示具体的某一次动作,特别是将来的动作,试比较:Hisjobisraisingpigs.Mymainjobnowistoteachthemtoreadthetext.3.ObjectHearingthewords,shecouldn’thelpthinkingofherpastbitterness.我们都回避提及此事.Weallavoidedmentioningthatmatter.★能用动名词作宾语的动词有两类:⑴.只能用动名词作宾语的动词,其中有:avoid,admit,advise,appreciate,consider,delay,dislike,enjoy,escape,finish,giveup,can’thelp,imagine,keep(on),don’tmind,miss,practise,putoff,goon,resist,suggest等,如:Ienjoyworkingwithyou.玛莉正考虑换工作.Maryisconsideringchangingherjob.Wouldyoumindringingmeuptomorrow?⑵.既可以用动名词,又可以用不定式作宾语的动词,其中有:begin,continue,forget,hate,like,love,prefer,propose(建议,打算),regret,remember,start,try,want,need,stop但是在下列情况下,通常用不定式:a.在like/love/prefer/hate后表示一个特定的新动作时:Iliketobuyasuit.我不愿意让他们失望Ihatetodisappointthem.b.当谓语动词已用进行时态时:Thewaterisbeginning/startingtoboil.I’mstartingtoworkonmyessaynextweek.c.在begin等后,非限定动词由某些状态动词构成时(即:指心理状态或精神活动时)Shebegantobelievehisstory.Hebegantorealizethathewaswrong.d.当主语是物,不是人时:Thewaterstarted/begantoboil.Theicestarted/begantomelt.B.在need,want,deserve等后,可用动名词的主动式表示被动含义,或用不定式的被动式,意义上无差别。但用动名词较为普遍,(这时主语一般是物),如:Thedoorneedsoiling/tobeoiled.C.有的动词尽管可以用两种结构,但意义明显不同,须认真加以区别(mean,remember)IforgottoclosethedoorbeforeIlefttheroom.Iforgothavingclosedthedoor.Hetriedtowritebetter.(尽量努力地写)Hetriedwritingwithabrush.(用毛笔试着写)Icouldn’thelpfinishingit.(不能不结束某事)Icouldn’thelptofinishit.(不能帮助结束某事)Theyleftofffishing.(停止钓鱼)Theyleftofftofish.(离开某处出发去钓鱼)Iregrettosaythatthereisnowineinthebottle.(对现在要发生的事表示遗憾、抱歉)Iregretnottakingyouradvice.(后悔)★动名词(短语)还常常跟在短语动词之后,作介词的宾语。常见的有:insiston/persistin/thinkof/dreamof/hearof/prevent…from/keep…from/stop…from/feellike/beengagedin/dependon/thank…for/excuse…for/setabout/spend…in/befondof/beafraidof/betiredof/succeedin/beinterestedin/beproudof/burstout/giveupobjectto/lookforwardto/contributeto/devote…to/get(be)usedto…/leadto/等,如:Whydoyoupersistinthinkingthatway/doingso?Heinsistedonseeingushome.Theyallobjectedtoputtingthemeetingoff.Areyouinterestedingoingtotheshow?I’mthinkingofgoingtotownthisafternoon.Idon’tfeellikeeatinganything.Sheisafraidoffallingbehindtheothers.Hefinallygottiredofdoingofficework.(3)v.+Gerund(object)v.+object+infinitive(complement)advise,admit,allow,consider,permit,encourage,forbid,recommendSherecommendedustovisitthetownofLondon.SherecommendedvisitingthetownofLondon.4.Prep.+Gerund=Adverbial(about,against,at,before,after,by,for,besides,from,in,on,upon,without)Hewarnedmeagainstswimmingthere.Sheleftwithoutsayinggood-byetous.Besidescookingandsewing,shehadtotakecareofthechildren.Hefeltuncomfortableaboutacceptingthegift.5.Prep.+Gerund=Attributive如:What’stheirreasonforcancelingtheEnglishevening?Haveyouanyobjectiontogoingthereonfoot?Hehaslittlehopeofpassinghisexaminations.6.Attributive如:singingcompetitionswimmingpooldiningcaropeningspeechdrinkingcuplivingroomtypingpaperwaitingroomwritingdeskwashingmachinefrying-pansleeping-pillwalkingstickteachingmethodGerund复合结构:前面带有代词或名词有时为了明确动名词所表示的动作的执行者,可以在动名词之前加上一个物主代词或名词所有格,来表示动名词逻辑上的主语。有时也可以用人称代词宾格或名词普通格,但主要用于口语中。Shewon’thearofourleavingthevillage.DoyouobjecttoLiPing’sjoiningthephysicsgroup?III.CompoundStructure动名词的复合结构有下列用法:①作主语:放在句首作主语应该用物主代词和所有格Theircomingtohelpwasagreatencouragementtous.LaoLi’sgoingwon’tbeofmuchhelp.②作表语:Oursoleworryisyourrelyingtoomuchonyourself.What’stroublingthemistheirnothavingenoughmachine③作宾语:Doyoumindmyreadingyourpaper?Pleaseexcusemyinterruptingyou.④作介词宾语:Theyinsistedonmystayingthereforsupper.Doyouthinktherewillbeanychanceofmyseeinghimagain?IV.PerfectandPassiveVoice动名词的一般形式通常表示一般性动作(即不是明确地在过去、现在或将来发生的动作)或是与谓语所表示的动作同时发生的动作,如:Theyareallinterestedinclimbingmountains.Hetookagreatdelightinhelpingothers.1.如果要表示动名词代表的动作在谓语所表示的动作之前发生,通常用动名词的完成形式,如:Hedidn’tmentionhavingmetme.Iregretnothavingtakenheradvice.Idon’trememberhavingeverpromisedyouthat.注:在某些动词之后(或在成语中)常用(或可以用)动名词的一般形式表示在谓语动作之前发生的动作,如:Excusemeforcominglate.Idon’tremembereverseeinghimanywhere.2.当一个动名词逻辑上的主语所表示的是这动作的承受者时,这个动名词一般要用被动形式,如:Thisquestionisfarfrombeingsettled.Hediditwithoutbeingasked.Theyinsistedontheirbeingtreated