Unit3FascinatingParksVing形式作主语课件高中英语人教版选择性

动词-ing形式（一）V-ing作主语Unit31.TomasterthebasicgrammarrulesofV-ingformasthesubject.(掌握V-ing形式做主语的基本语法规则。)2.Tounderstandthegrammarruleof“It”asformalsubject.（理解It作形式主语的语法规则。）3.动词-ing的时态和语态4.Putwhathasbeentaughtintopractice.（把所学到的运用到实践中去。）Learninggoals:Smoking抽烟,Parking停车,Spitting吐痰,Littering乱丢垃圾…Haveyoueverseenthesesigns?-ingformsStep1:LeadinStep2：Presentation&Explanation(展示点拨)Task1:完成下列练习并作出小结。

1.__________(sing)is

theirhobby.

2.__________(do）exerciseisthebestwaytoloseweight.

3.___________(fly)likebirdsistheirdream.

SingingDoingFlyingWhat’sincommon(共同点)?Singing

istheirhobby.Doingexercise

isthebestwaytoloseweight.Flyinglikebirds

istheirdream.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V-ing形式单数注意1：动名词v-ing和不定式todo都可以做主语，它们有什么区别吗？

Deliveringnewspaperishisjob.送报纸是他的工作。Todelivernewspaperishisjobtoday.送报纸是他今天的工作。动名词做主语表示一般的，抽象的行为.不定式做主语表示一次性的，具体的行为.注意2：两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.

早起早睡对我们的健康有好处（早起早睡是一件事）ListeningtotheEnglishtapesandwatchingEnglishfilms______goodwaystolearnEnglish.

isare听英文磁带和看英文电影是学英语的好方法。It

isnouse_________(try)toescape.1.________(try)toescape(

逃跑)isnouse.TryingtryingTask2:模仿例子变换句型并作出小结：

例：2.________thefilmisworthwhile(值得的).Seeing____isworthwhile_______thefilm.Itseeing3.Playing

computergamesisawasteoftime.__

isawasteoftime________computergames.Itplaying4.Playing

withfriendsispleasant(愉快的).___ispleasant_________withfriends.ItplayingItisnousetryingtoescape.Itisworthwhileseeingthefilm.Itisawasteoftimeplayingcomputergames.Itispleasant

playing

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

做某事是没有用处/好处的Itis/was

worthwhile

doingsth.做某事是值得的Itis/was

awasteoftime

doingsth.

做某事是浪费时间的Itispleasant/uselessdoingsth.…做某事是有乐趣/无用的ReadandMemorize:(读&记忆)Itisnouse/gooddoingsth

做某事是_____/_____的Itis/was

worthwhile

doingsth.做某事是________的Itis/was

awasteoftime

doingsth.

做某事是______的Itispleasant/uselessdoingsth.做某事是___/___的Fillblanks:(填空)Itis

____/____doingsth

做某事是没有用处/好处的Itis/was

_______

doing

做某事是值得的Itis/was

________doing

做某事是浪费时间的Itis____/_____doing…做某事是有乐趣/无用的Fillblanks:(填空)Step3动词-ing的时态和语态1.构成如下：(以do为例)主动形式

(do)被动形式

(bedone)一般式完成式否定形式doingbeingdonehavingdonehavingbeendonenotdoing2.动词-ing的时态意义1）动词-ing的一般式多用于表示一般情况，或所表示的动作通常与谓语动词动作几乎同时发生，或发生在谓语动词动作之后。Ienjoylisteningtoclassicalmusic.Wehadagoodtimeindancingwiththem.Weareconsideringbuyinganewcar.一般情况同时稍后Jackwaspraisedforhavingdoneagooddeed.杰克因为做件好事而受到表扬。2）动词-ing的完成式所表示的动作发生在谓语动词动作之前。3.动词-ing的语态动词-ing的主动式表示的是它的逻辑主语是动作的执行者。动词-ing的被动式表示的是它的逻辑主语是动作的承受者。Heinsistedonsendinghertohospital.他坚持要送她去医院Sorry,Ididn’tmeantolosemytemper.Ijustcan’tstandbeingmisunderstood.执行者承受者对不起，我不是故意发脾气的。我只是不能忍受被误解。动词-ing形式作主语表示经常性或习惯性的动作且常放句首动词-ing作主语It’sawastetimedoingsthIt’suseless/nouse/nogooddoingsthIt’snopleasuredoingsthit作形式主语动词原形+-ing基本构成基本用法动词-ing与动词不定式作主语的区别Summary小结Step4：Consolidation(巩固达标)TimeforPractice1．

(read)inbedisbadforyoureyes.2.__________

(talk)withyourkidhearttoheartisveryimportant.3.Itisnouse________(regret)yourpastmistakes.4.Itisawasteoftime____________(play)videogames.5．Climbingmountains

(be)reallyfun.6．Itisnogood

(cry)overspiltmilk.

7.Ican'tstand

(work)withJaneinthesameoffice.8.It'snouse

(complain)withouttakingaction.9.(2019·全国卷Ⅱ)

(volunteer)justfeelssogood.10.____________(invite)tothepartywasagreathonourtothefamily.

11.Hisnot

(know)Englishbroughthimalotofinconvenience.

12.____________(win)thegoldmedalintheOlympicGamesmadeherfamousovernight.ExerciseIⅠ.单句语法填空ReadingTalkingregretting

playingiscryingworkingcomplainingVolunteeringBeinginvitedknowingHavingwonExerciseII汉译英学习英语非常有趣。2.阅读是扩大(enlarge)你的词汇量的一个好方法。3.

在教育上多花钱是值得的.LearningEnglishisveryinteresting.

Itisworthwhilespendingmuchmoneyoneducation.Readingisagoodwaytoenlargeyourvocabulary.Step5：HomeworkItisnouse/gooddoingsth

____________Itis/was

worthwhile

doing____________Itis/was

awasteoftime

doing

____________Itispleasant/uselessdoing…____________1.默写：_________________做……是没有用处/好处的_________________做……是值得的_________________做……是浪费时间的_________________做……是有乐趣/无用的1.默写：2.金版巧学活用——用所给动词的适当形式填空/补全句子①________(learn)tothinkcriticallyisanimportantskilltoday’schildrenwillneedforthefuture.②________(learn)Englishasasecondlanguagecanbeapainfulexperience.③It’sawasteoftime______(try)topersuadesuchaperson.④It’snouse___________(complain)withouttakingaction.⑤____________________(未能通过考试)madehimveryupset.⑥____________________(他又一次迟到)madehisteacherveryangry.3.维度一单句语法填空1．Whatweallknowisthatit’sawasteoftime_______(play)computergames.2．_____(lie)onthebeachinsummerreallymakesyouf