Unit 1 Nature in the balance Grammar （省略） ppt课件-（2020）新牛津译林版高中英语必修第三册.rar

Unit 1 Nature in the balanceUnit 1 Nature in the balanceGrammar and usageGrammar and usageEllipsis-Excuseme!-Yes?-Isthisyourhandbag?-Pardon?-Isthisyourhandbag?-Yes,itis.-Thankyouverymuch.Watch and Observe-Excuseme!-Yes?-Isthisyourhandbag?Pardon?-Isthisyourhandbag?-Yes,itis.-Thankyouverymuch.-(You)-(Ibegyour)pardon.myhandbag.-(I)Jack:Hi,Henry!DidyouwatchthedocumentaryaboutenvironmentalprotectiononTVyesterday.Henry:(1)No,Ididnt.Jack:Whatapity!Ihighlyrecommendit.(2)Youcanwatchitonlineifyouwantto.Itsaboutsomeoftheworstenvironmentalproblemswerefacingtoday.Globalwarming,forexample,isamajorproblemcausedbygreenhousegases.Itmayleadtoextremeweatherevents:droughts,heatwavesandsoon.(3)Ifeltworriedwhenwatchingthedocumentary.Henry:Doesitalsotalkaboutsolutionstotheseproblems?Part A ExplorPart A Exploring the rulesing the rulesJack:Yes.Itincludesinterviewswithmorethan20oftheworldsleadingexpertsonenvironmentalissues.Allofthemcomeupwithcreativeideasonhowtosolvetheseproblems.(4)Somecallfortheapplicationofmoderntechnology,andothersachangeoflifestyle.Henry:Iwishwecouldalsodosomethingtohelp.(5)Gotanyideas?Jack:Whataboutmakingabrochureaboutenvironmentalproblems?Henry:(6)Soundsgreat!Letsgetstartedafterlunch.1.No,Ididnt(watchthedocumentaryaboutenvironmentalprotectiononTVyesterday).2.Youcanwatchitonlineifyouwantto(_).3.Ifeltworriedwhen(_)watchingthedocumentary4.Somecallfortheapplicationofmoderntechnology,andothers(_)achangeoflifestyle.5.(_)Gotanyideas?6.(_)Soundsgreat!watchitIwascallforHaveyouIt/ThatExplorExploring the rulesing the rulesWhy do people leave them out?l Wecanuseellipsis:Working out the rules inshortresponses ininfinitives(不定式) aftersomeconjunctions（连词连词 ）likeif, whenandwhile inclauseswiththesamepatternandthesameverb atthebeginningofasentenceininformal(非正式的)speechWesometimesuseellipsistoavoid_(stressing/repeating)oneormorewordswhenthemeaningisclear.repeating1. No, I didnt (watch the documentary about environmental protection on TV yesterday).2. You can watch it online if you want to (watch it).3. I felt worried when (I was) watching the documentary.4. Some call for the application of modern technology, and others (call for) a change of lifestyle.5. (Have you) Got any ideas?6. (It/That) Sounds great!InshortresponsesIninfinitivesAftersomeconjunctionslikeif,whenandwhile InclauseswiththesamepatternandthesameverbAtthebeginningofasentenceininformalspeechAtthebeginningofasentenceininformalspeech1.在非正式场合，如果语境清晰，常省略_或_+_。2.在简简短对话对话 中，答句常保留_和_，省略其后主要动动词词以及上句出现过现过 的其他内容。(It/That)Soundsgreat!(Areyou)Ready?Didyougotothemuseumyesterday?No,Ididnt(gotothemuseumyesterday).Working out the rulesWorking out the rules主语主语动词主语助动词3.在由_或_连连接的并列结结构中，常常省略与前面_的主语语、谓语谓语 或其他成份。andbut相同Peterenteredtheclassroomand(Peter)satathisdesk.Ilikedancingbutmybrother(likes)singing.WhatIsaidmadeJackhappybut(whatIsaidmade)Janeangry.JackmusthavebeenplayingfootballandMary(musthavebeen)doingherhomework. Youdbetterlookoutwhenwhen(youare)crossingthestreet.Woodgivesoffmuchsmokewhilewhile(itis)burning.Iwontattendhisweddingunlessunless(Iam)invited.Motherandfathercamebackearlierthan(theywere)expected.Youneedtomakeimprovementswherewhere(itis)necessary.Pleasecallmebackifif(itis)possible.4.在when,while,if,asif,though,although,as,than,until,once,unless,等引导导的状语语从句中，当从句主语语和主句的主语语_且从句谓语谓语 中含有系动词动词 _或从句的主语为语为 _时时，从句中_和_常被省略。 一致be主语语itbe动词动词5.不定式作_或_时，常省略to后面的内容。这些动词常见的有：这些动词常见的有：ask,tell,advise,force,persuade,wish,ask,tell,advise,force,persuade,wish,allow,permit,forbid,expect,order,warnallow,permit,forbid,expect,order,warn等。等。YoudonYoudon thavetodoitifyoudonthavetodoitifyoudon twantto(twantto(doitdoit).).YouYou dbetternottakemedicineunlessyourdoctortoldyoudbetternottakemedicineunlessyourdoctortoldyouto(to(takemedicinetakemedicine). ).宾语宾语补足语如果不定式后接be动词或动词的完成式，省略句中往往保留be或have。IambusiernowthanIusedtoIambusiernowthanIusedtobebe(busy).(busy).HasMikefinishedhisproject?HasMikefinishedhisproject?HeseemstoHeseemstohavehave(finishedhisproject)(finishedhisproject)你是一位律师你是一位律师吗？吗？不是，但我以不是，但我以前是。前是。1.John worked hard but his brother didnt work hard.2.Whenever it is possible, he will come to my help.3.When you are crossing the street, you should be careful.4.Dont go till I tell you to go.5.Hasnt he finished writing the report?No, but he ought to have finished it.Rewrite the sentences with ellipsis.Rewrite the sentences with ellipsis.Applying the rulesApplying the rulesFindthemistakesandrewritethesentencesusingellipsis.1. I cannot watch the documentary this weekend, though I would like. We cannot leave out to in infinitives when using ellipsis. I cannot watch the documentary this weekend, though I would like to.2. Cows live on land, and fish the water. Different prepositions are used and they cant be left out. Cows live on land, and fish in the water.3. The Amazon rainforest is smaller now than was 50 years ago. When using ellipsis in clauses with the same pattern, the subject and the verb should be left out altogether.The Amazon rainforest is smaller now than 50 years ago.4. He had planned to borrow a book on environmental protection, but he didnt do. When using ellipsis in compound sentences, the part behind the auxiliary verb should be left out altogether. He had planned to borrow a book on environmental protection, but he didnt.5. When taking photos of wildlife, every effort should be made to ensure that we keep away from the animals. When using ellipsis in adverbial clauses, we need to make sure that the subject of the main clause is the same as the subject of the subordinate clause.When taking photos of wildlife, we should make every effort to ensure that we keep away from the animals.B2Jack is sharing with his classmates his experience of taking part in a forest clean-up activity. Use ellipsis where necessary. Put brackets around the word(s)that can be left out.Lastweekend,Itookpartinaforestclean-upactivity.ItwasorganizedbyGreenHope,anorganizationdevotedtoprotectingforests.AtfirstIdidntwanttotakepartintheforestclean-upactivity,butthenIthought,“Whatifnobodygoes?”Ourteamleader,Joe,tookustoaforestoutsidethecity.Iwassadtoseelittereverywhere.Therewasa“Nolitteringisallowedhere”signattheentrancetotheforest,butthatdidntstoppeoplefromthrowingtheirrubbishontheground.Joedividedusintotwogroups:onegroupcleanedupthenorthsideoftheforest,andtheothergroupcleanedupthesouthsideoftheforest.Weworkedforseveralhoursandwewerehappytoseethattheforestlookedcleanerthanithadlookedbefore.Itwasabsolutelyworthoureffort!Therellbeanotherclean-upactivityinthegreenbeltnextSaturday.YoucanfindJoeandsignupifyourewillingtohelp.Everyonewhotakespartintheactivitywillreceiveamedal.IlljoinyoutooifIhavetime.