一、V-ing形式由“do＋ing”构成,其否定形式是“notdoing”,V-ing可以带宾语或状语构成V-ing短语,没有人称和数的变化,但有时态和语态的变化。一、V-ing形式由“do＋ing”构成,其否定形式是“notdoing”,V-ing可以带宾语或状语构成V-ing短语,没有人称和数的变化,但有时态和语态的变化。V-ing形式在句中作定语和状语是本单元的学习重点。V-ing形式在句中作定语和状语是本单元的学习重点。1.作定语V-ing形式可以单独充当名词的前置修饰语,这时有两种情况。1)-ing形式表示用途和功能，这类作定语的-ing形式，叫动名词。e.g.aswimmingpool=apoolforswimming1.作定语V-ing形式可以单独充当名词的前置修饰语,这时有两种情况。1)-ing形式表示用途和功能，这类作定语的-ing形式，叫动名词。e.g.aswimmingpool=apoolforswimmingasleepingcarasleepingcar=acarforsleeping=acarforsleeping2)-ing形式表示状态和属性，叫现在分词。e.g.asleepingchildworkingpeopletherisingsun-ing形式短语作定语时一般放在它所修饰的名词之后,相当于一个定语从句。e.g.Theyarevisitorscomingfromseveralcountries.Theboystandingthereisaclassmateofmine.Inthefollowingyearsheworkedevenharder.在后来的几年中，他学习更努力了。Themanspeakingtotheteacherisourmonitor'sfather.xk正与老师谈话的那个人是我们班长的父亲。1).____dogsseldombite.A.BarkB.TobarkC.BarkedD.Barking2).Thewolfspokeina_____voiceandMr.Dongguofelt______.A.frightening;frightenedB.frightened;frightenedC.frighten;frighteningD.frightening;frightening3.It’spleasuretowatchthefaceofa____baby.A.asleepB.sleepC.sleepingD.slept•4.The____buildingsshowedusthatanearthquakewascoming.A.shakingB.shookC.shakenD.shakeReadthesentencesfromthetext.1.Isawseveralyoungpeopleenterthewaitingarealookingaroundcuriously.2.Istoodforaminutewatchingthemandwenttogreetthem.3.Shesteppedbackappearingsurprised…4.ThenAkiraNagatafromJapancameinsmiling,togetherwith…5.…,sherecognizedTonyGarcia’ssmilingface.attributiveadverbialadverbialadverbialattributive动词-ing在语法功能上相当于动词、形容词和副词。现在分词通常和逻辑主语之间存在主动关系。但要注意它的各种形式变化：主动形式被动形式doingbeingdonehavingdonehavingbeendone动词-ing做状语一般式完成式现在分词作状语现在分词作状语往往和逻辑主语之间存在主动关系。现在分词作状语，常常用来表示原因、时间、方式、结果、条件、伴随状况等。现在分词一般不用作表目的的状语（通常用不定式表目的状语）。Walkinginthestreet,Icameacrossanoldfriendofmine.(=WhenIwaswalkinginthestreet,Icameacrossanoldfriendofmine.)Whilewaitingforthebus,hereadacopyofChinaDaily.(=Whilehewaswaitingforthebus,hereadacopyofChinaDaily.)1）表时间状语Attention：连词可以保留2)表原因状语Beingill,hedidn’tgotoschool.(=Because/Ashewasill,hedidn’tgotoschool.)Beingastudent,youshouldstudyhard.(=Sinceyouareastudent,youshouldstudyhard.)Thinkinghemightbeathome,Icalledhim.(=AsIthoughthemightbeathome,Icalledhim.)3)表方式、伴随状语：作伴随状语地分词表示的动作，Hesatonthesofa,watchingTV.(=Hesatonthesofa,andwatchedTV.)他们笑着谈着走进了教室。____________________,theywentintotheclassroom.他斜靠(lean)着墙站着。Hestoodleaningagainstthewall.(＝Hestoodandleanedagainstthewall.)Laughingandtalking4)表结果Hermotherdiedin1990,leavingherwithheryoungerbrother.(=Hermotherdiedin1990,andleftherwithheryoungerbrother.)全国到处在传唱这首歌曲，使它成了一首最受欢迎的歌曲。Thesongissungalloverthecountry,_____________________________.makingitthemostpopularsongAttention：表示意外的结果用todo(与only连用)5)表条件Usingyourhead,youwillfindaway.(=Ifyouuseyourhead,youwillfindaway.)一直往前走，你就会看到一座白色...
