Unit 5 Discover useful structures 课件-2022-2023学年高二英语同步课件（人教版2019选择性必修第二册）

Unit5UNIT5FIRST

AIDToreviewtheusesandfunctionsofthe-ingformToanalysethesentencestructuresandgettherightanswersTomakeaconclusionabouthowtousethe-ingformproperlyWhatisthefunctionofthe-ingformineachsentencebelow?Canyouexpressthesameideaswithoutusingthe-ingform?1.Asyoucanimagine,gettingburntcanleadtoveryseriousinjuries.2.Thefirstandmostimportantstepinthetreatmentofburnsisgivingfirstaid.subjectpredicativeAsyoucanimagine,ifyougetburnt,itcanleadtoveryseriousinjuries.Thefirstandmostimportantstepinthetreatmentofburnsistogivefirstaid.3.Itisbesttoplaceburnsundercoolrunningwater,especiallywithinthefirsttenminutes.4.Removeanyclothesusingscissorsifnecessary,unlessyouseethefabricstickingtotheburntskin.attributeadverbial

Itisbesttorunsomecoolwaterandplaceburnsunderit,especiallywithinthefirsttenminutes.Usescissorstoremoveanyclothesifnecessary,unlessyoufindthatthefabricisstickingtotheburntskin.objectcomplement5.Youcanprotecttheburntareabycoveringitwithaloosecleancloth.objectafteraprepositionToprotecttheburntarea,youcancoveritwithaloosecleancloth.请从准确性和简洁性对以上五组句子进行对比，总结动词-ing形式在表意方面的功能和优势。动词-ing形式具有动词的特征，同时又具有名词、形容词和副词的特征。有时态和语态的变化形式。动词-ing形式主动被动一般式doingbeingdone完成式havingdonehavingbeendone动词-ing形式的否定式是在前面加not。1.动词-ing形式作主语

通常表示一种概念、习惯或经验。e.g.Learningnewwordsisveryimportantforme.Talkingiseasierthandoing.

注意：动词-ing形式作主语时，如果其结构内容较长，可用it作形式主语，而将作主语的动词-ing形式后置。e.g.It’snousewaitinghere.动词-ing形式的基本用法2.动词-ing形式作表语

说明主语的性质、状态或内容。动词-ing形式作表语时，句子的主语常是表示无生命的事物的名词或what引导的名词性从句。e.g.Herjobiswashingandcooking.Althoughitistiring,shelikesit.3.动词-ing形式作宾语

1)作动词的宾语e.g.Toavoidbeingnoticed,sheslippedintotheroom.2)作某些动词短语的宾语e.g.MaryisthinkingofgoingbacktoNewYork.3)“do+限定词（如my,some,any,the等）+动词-ing形式”表示“做……事”。e.g.ThehouseholdoftendoessomecleaningonSaturdayafternoon.4)作介词的宾语

e.g.Hersisterisgoodatlearningphysics.5)作形容词worth,busy等的宾语

e.g.Thisbookiswellworthreading.4.动词-ing形式作定语

1)表示被修饰词的性质、作用或用途,意为“供……用”，相当于介词for短语，常置于被修饰词之前。e.g.awaitingroom=aroomforwaiting

2)表示被修饰词的动作或状态，被修饰词与动词-ing形式之间是主动关系，相当于一个定语从句。

单个的动词-ing形式作定语时，放在被修饰词之前;动词-ing形式短语作定语时，则放在被修饰词之后。

e.g.Thegirlperformingonthestagehasagiftfordance.常见的感官动词有:see,watch,hear,feel,smell,find,listento,lookat,notice,observe；其他动词有:set,keep,have,get,leave,catch等。e.g.Isawhimwalkinginthestreet.Iheardthemsingingintheclassroom.Theyusecomputerstokeepthetrafficrunningsmoothly.5.动词-ing形式作宾语补足语

补充说明宾语正在进行的感官动作、心理状态或使役动作等。6.动词-ing形式作状语动词-ing形式作状语时，可以表示时间、原因、结果、条件、让步、方式、伴随情况等。

可以根据需要在其前加上连词while,when,once,if,unless等。e.g.Crossingthestreet,hewasknockeddownbyacar.Hefelloffthebike,breakinghisleftleg.Agroupofchildrenweresittingaroundtheteacher,playinggames.Seeingthosepictures,herememberedhischildhood.1.Thenextmorninghehiredaboatandsetouttofindthewell-knownpainter.…Andwhenhesawthemistsrisingfromtheriverandthesoftclouds____________(surround)themountaintops,hewasreducedtotears.

(2020年新课标全国卷III)surrounding2.Aswellaslookingatexhibits,visitorscanplaywithcomputersimulations(模拟)andimaginethemselveslivingatadifferenttimeinhistoryor____________(walk)througharainforest.(2020年全国新高考I卷)3.…Later,theylearnedtoworkwiththeseasons,plantingattherighttimeandindryareas,____________(make)useofannualfloodstoirrigate(灌溉)theirfields.

(2020浙江卷)walkingmakingReplaceeachunderlinedpartwithasuitable-ingformandrewritethesentenceasnecessary.Workwithapartnerandsummarisethedifferentstructuresofthe-ingform.Wheniseachoneused?1.Whenhegotoutofthebathtub,heslippedandfellonthefloor.Whengettingoutofthebathtub,heslippedandfellonthefloor.2.Isthereanyreasonwhywearenotgoingtohavethefirst-aidtrainingthisweek?

3.Shehadbeentoldabouttheriskofelectricshocksandthismadeherverycarefulwhileusinghairdryers.Isthereanyreasonfornothavingthefirst-aidtrainingthisweek?Havingbeentoldabouttheriskofelectricshocks,shewasverycarefulwhileusinghairdryers.4.Becausethechildwasnotwatchedcarefullybyhisparents,hetouchedahotironandburnthisfinger.5.Aftershehadbeenbittenbymosquitoes,sheappliedsomemedicinetoherskin.Notbeingwatchedcarefullybyhisparents,thechildtouchedahotironandburnthisfinger.Afterbeing/havingbeenbittenbymosquitoes,sheappliedsomemedicinetoherskin.主动语态被动语态肯定式否定式肯定式否定式一般式doingnotdoingbeingdonenotbeingdone完成式havingdonenothavingdonehavingbeendonenothavingbeendoneCompletethepassagewiththecorrectformsofthegivenwords.WhathappenedtoMrsTayor?MrsTaylorwasanelderlywoman__________(live)alone.Oneday,shewasinherlivingroomcleaningthewindows,whensuddenlyshecouldnolongerfeeltherightsideofherbody.__________(try)towalktohersofatositdown,shefelloverontothecarpet.Thensherealisedthatshecouldnotgetup,andthatshewashavingtroule_____________(breathe).livingTryingbreathingFortunately,shehadhermobilephonewithher,andshewasabletoreachitwithherlefthandwhile___________(lie)onthefloor.Hermobilephone________________(already,setup)tocallanemergencynumberatthepushofabutton,soitwaseasytocallforhelp.Whileattemptingtotalktotheoperator,MrsTayordiscoveredthatshecouldnotspeak._____________(not,hear)ananswer,theoperatorknewthatMrsTayormustbeintrouble.TellingMrsTayorthateverythingwouldbeOK,lyingwasalreadysetupNothearingsheimmediatelysentanambulance.After_________(arrive),theambulanceteamquicklyfoundMrsTayorandwithoutdelaygaveheoxygen,putinanIVneedle,andcheckedhervitalsigns.________________(take)tothehospitalandtreatedimmediately,MrsTayor'shealthwasinnogreatdanger,thoughshehadtostayinthehospitalward.Afteraweek,her_______________(frighten)experiencewasover,andshewasallowedtogohome.arrivingHavingbeentakenfrighteningWhatisthefunctionofeach–ingformyouused?Amongallthestructuresfilledin,whichisdifferentfromtheothers?Why?Canyoufindmore–ingformsinthepassage?Whataretheirfunctionsinthesentences?Howmanydifferentstructuresdidyouuseinthepassage?Whatarethey?Didyoufindanystructurelike“when/after+doing”?Afterfinishingthepassage,answerthefollowingquestions:YouhavejustreadaboutMrsTaylor’sexperience.Doyouthinksheis