高中英语 Unit 3 Under the sea period 3 grammar课件 新人教版选修7.ppt

,Grammar,Theuseofv-ing,Unit3Underthesea,学生能够了解并掌握v-ing形式的主动式和被动式。学生能够了解并掌握V-ing形式的完成式，及其对应的被动式。,本节课是关于动词V-ing形式的语法课，设计意图是通过当堂讲解和练习来让学生掌握该语法的考点。首先，通过让学生填表格导入新课，先让学生从形式上认识V-ing形式的一般式和完成式及其对应的被动形式。然后，逐个讲解v-ing形式作主语，宾语，表语，定语等，并且讲练结合，当堂巩固。最后，课堂检测，既能让学生自我检测，又达到了整体上巩固语法的目的。,(not)doing,(not)beingdone,(not)havingdone,(not)havingbeendone,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。,1.作主语Swimmingisgoodforhealth._(raise)yourhattoaladyisgoodmanners.(kill)bysharksintheseaisacommonthing.,Raising,Beingkilled,2.作表语Teachingislearning.教学相长Myhobbyis_(make)modelplanes.Whatworriedthechildmostwas(not,allow)tovisithismotherinthehospital,making,notbeingallowed,1).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)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.,talking,tolearn,e.g.:Itisnousecryingoverspiltmilk.覆水难收。,Itis+adj.+(forsb.)todosth.,It作形式主语,只用V-ing,不用不定式。,3).Itsnouse(good)doingsth.Itsawasteoftimedoingsth.,Itisawasteoftime_(talk)tohim.Itisimportantforme_(learn)English.,3.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.Hewasafraidof_(abandon)byus.,beingcaught,joining,beingabandoned,4.作定语Thegirlstandingthereismysister.Thisisapieceof_(surprise)news.Theproblem_(discuss)nowisveryimportant.Thefarmers_(work)inthefieldsaretired.,surprising,beingdiscussed,working,5.作状语Hearingthegoodnews,hejumpedwithjoy.Hesatatthetable,_(read)ChinaDaily._(ask)toanswerthequestion,shecouldntrefuse._(work)hard,youwillsucceed.,reading,Beingasked,Working,6.作宾语补足语Isawpeoplecomingandgoinginthestreet.Iheardher_(sing)asonginherroom.Youllfindthetopic_(discuss)everywherenow.,singing,beingdiscussed,1)Hehurriedhome,lookingbehindfromtimetotime.2)Thebuildingbeingrepairedisourdormitory.,-V-ing一般时和一般时的被动形式,1)Havinglitacandle,shewentout.2)Havingbeenaskedtostay,Icouldntleave.3)Havingheardthis,ourteacherexpressedhersatisfaction.,-V-ing的完成时和完成时的被动形式,_(turn)totheright,youwillfindtheplaceyouwant.2._(ask)toputonperformance,sherefused.3.Hedisliked(interrupt)inhisexperiment.4._(learn)newwordsisuseful.,Turning,Beingasked,Learning,beinginterrupted,5._(finish)hiswork,Henrywenthome.6.Iapologizefor_(not,wait)foryou.7._(not,receive)ananswer,