Unit+3+Fascinating+parks+Discovering+Useful+Structures高中英语人教版（2019）选择性必修第一册

动词-ing形式V-ing作主语1.TomasterthebasicgrammarrulesofV-ingformasthesubjectandobject.(掌握V-ing形式做主语和宾语的基本语法规则。)2.Tounderstandthegrammarruleof“It”asformalsubject.（理解It作形式主语的语法规则。）3.Toputwhathadbeentaughtintopractice.

Learninggoals:Lead-in一个句子中有且只有一个谓语动词多个谓语怎么办？思考：在一个句子已有谓语动词且没有连词和从句的情况下第二个动词要怎么办？1.Eventhoughthesunisbrightlyshining,tellingwhetheritismorningornightisimpossible.2.Gettinghere

isquitedifficult,soapartfromtheSamiveryfewpeoplehaveeverseenSarek.Ilove

English.句号、问号等断开and、but、so等连词从句3.Forhundredsofyears,________(look)afterreindeerwasawayoflifefortheSami.

(教材P26)4._______(be)insuchabeautifulandwildplacemakesmefeelblessedtobealive.(教材P27)Beinglooking在一个句子已有谓语动词且没有连词和从句的情况下第二个动词要用非谓语的形式非谓语动词的三种形式todo动词不定式V-ing动名词

现在分词V-ed过去分词关于动词­ing形式的基本情况1．动词­ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。1.aswimmingboyaswimmingpool2.asleepingcarasleepingbaby动词­ing形式在句中的语法作用v-ing形式动名词现在分词主语宾语表语定语定语表语状语宾补Playingwithfireisdangerous.Jimlikesjumpinginmuddypuddles.Herideaisbuildingupanewcompany.Peoplelivingtherearequitefriendly.Hereallyneedsawashingmachine.Theperformancewasreallyamazing.Laughingandtalking,theywentin.Ilovetowatchherperformingonthestage.语法体会：完成下列三个任务并作出小结。Task1:1.______(sing)istheirhobby.2.______(do)exerciseisthebestwaytoloseweight.3.______(fly)likebirdsistheirdream.小结：___不能作主语,___形式可以作主语,往往表示经常性/习惯性动作,谓语动词用____。

Task2:

例:Tryingtoescape

isnouse.It

isnousetryingtoescape.1.Seeingthefilmisworthwhile.__isworthwhile_______thefilm2.Playingcomputergamesisawasteoftime.__isawasteoftime_______computergames.3.Playingwithfriendsispleasant.__ispleasant________withfriends.小结：用_____作形式主语，把真正的主语V-ing形式移置____。

1.________(sing)is

theirhobby.SingingTask1:2.______(do）exerciseisthebestwaytoloseweight.DoingTask1:3._____

(fly)likebirdsistheirdream.

FlyingTask1:What’sincommon?Singing

istheirhobby.Doingexercise

isthebestwaytoloseweight.Flyinglikebirds

istheirdream.用法1小结：1.______不能作主语，_________可以作主语，往往表示经常性、习惯性动作，谓语动词用

。动词单数V-ing形式It

isnouse_________(try)toescape.________(try)toescapeisnouse.TryingtryingTask2:例：________thefilmisworthwhile.____isworthwhile_________thefilm.SeeingseeingTask2:It_________computergamesisawasteoftime.__

isawasteoftime________computergames.PlayingplayingTask2:It______withfriendsispleasant.___ispleasant_________withfriends.PlayingplayingTask2:ItItisnousetryingtoescape.Itisworthwhileseeingthefilm.Itisawasteoftimeplayingcomputergames.Itispleasant

playing

withfriends.用法2小结：用_____作形式主语，把真正的主语V-ing形式移置_______。What’sincommon?it句尾Itisnouse/gooddoingsth

做……是没有用处/好处的Itis/was

worthwhile

doing做……是值得的Itis/was

awasteoftime

doing

做……是浪费时间的Itispleasant/uselessdoing…做……是有乐趣/无用的ReadandMemorize:(读&记忆)Itisnouse/gooddoingsth

做……是_____/_____的Itis/was

worthwhile

doing做……是________的Itis/was

awasteoftime

doing

做……是______的Itispleasant/uselessdoing…做……是___/___的Fillblanks:(填空)Itis____/____doingsth

做……是没有用处/好处的Itis/was

_______

doing做……是值得的Itis/was

________doing

做……是浪费时间的Itis____/_____doing…做……是有乐趣/无用的Fillblanks:(填空)用法3动词-ing的复合结构作主语（动名词的复合结构实际上是给动名词加了一个逻辑主语）通常有四种形式：(1)形容词性物主代词+v-ing(2)名词所有格+v-ing(3)代词宾格＋动名词(4)名词＋动名词_____________________madehisteacherveryangry.他再次迟到让老师很生气。

_____________________isagreathelptohisfamily.麦克回来工作对他全家来说都是一大帮助。HisbeinglateagainMike’sreturningtowork

动词-ing作主语，常常表示抽象的习惯性或经常性的动作。而不定式一般表示一次性、具体性的行为;且表示将来的事情或未达成的目的。

Tolookafterchildrenisherjobtoday.

她今天的工作是看孩子。

Lookingafter

childrenisherwork.

她的工作是看孩子。二、V-ing与动词不定式作主语的区别：三、v-ing作主语的“数”单个的v-ing(短语)作主语，谓语动词用单数。Helpingothersmeanshelpingourselves.帮助别人意味着帮助我们自己。注意：两个或两个以上的动词-ing短语作主语时，如果表示一件事，谓语动词用单数；如果表示两件或多件事情，谓语动词用复数。

Goingtobedearlyandgettingupearly

goodforourhealth.

早起早睡是一件事Drawingandplayingfootball

whatItookinterestinasateenager.

isare画画和踢足球是两件事练习四.动词-ing形式的时态和语态①琳达已经被我的狗咬了，所以她拒绝再和我玩。_____________________bymydogmadeLindareufsetoplaywithmeagain.②有时候被惩罚是一件好事。Sometimes_________________maybeagoodthing.beingpunishedHavingbeenbitten主动语态被动语态一般式完成式doingbeingdonehavingdonehavingbeendone动词­ing形式的完成式所表示的动作发生在谓语动词所表示的动作之前。动词­ing形式的被动式表示