Unit 5 Period 2 Discover Useful Structures 课件 2023-2024学年高二英语人教版（2019）选择性必修第一册

人教选择性必修第一册Unit5DiscoverUsefulStructures12TomastertheusageofsubjectclauseTousesubjectclausecorrectlyincontext目标一：TomastertheusageofsubjectclauseActivity1:Lookatthecomplexsentencesbelowandstatethefunctionsofthenounclausesitalicised.Thenfindsimilarcomplexsentencesfromthetext.•WhatYuanLongpingreallycaredaboutwasnotmoneyorcelebrity.•ThatYuanLongpinghadrealisedhisdreamofseawaterricesurprisedthewholeworld.•ItsurprisedthewholeworldthatYuanLongpinghadrealisedhisdreamofdevelopingseawaterrice.Theyworkassubjects.1)However,whatconcernedhimmostwasthatfarmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.2)Howthiscouldbedonewasachallengingquestionatthetime.3)However,whetheritwaspossibletodevelopahybridofself-pollinatingplantssuchasricewasamatterofgreatdebate.4)WhatimpressespeoplemostaboutYuanLongpingishisongoingabilitytofulfilhisdreams.Activity2:Lookatthefollowingsentences.Summarizewhatsubjectis.1.Janeisgoodatplayingthepiano.2.Shewentoutinahurry.3.Toseeistobelieve.4.Smokingisbadforhealth.5.Whathehassaidistrue.结论：(1)主语是句子说明的人或事物，一般放在_______；（2）在句子中充当_________的从句就是主语从句。句首主语Activity3:Lookatthefollowingsentences,anddoasummary.1.WhichbookIshallchoosehasn'tbeendecided.2.Whetherhewillpasstheexamisuncertain.3.Whowillgomakesnodifference.4.Whatweneedismoretime.结论：主语从句的语序要用________语序。陈述Activity4:Analysethefollowingsentencesanddosummaries.Thathewillpasstheexamiscertain.Whetherhewillpasstheexamisuncertain.结论1：________不做成分，放在句首不能省略，无意义.whether不做成分，译为“________”，that,whether是从属连词that是否Whowillgomakesnodifference.Whatweneedismoretime.WhichbookIshallchoosehasn'tbeendecided.Whoeverbreaksthelawwillbepunished.结论2：who,what,which,whoever是连接代词，在从句中做______________________。主语、宾语、表语Whenwewillleavehasn'tbeendecided.Wherethemeetingwillbeheldisnotknown.Whyhecriesisnotclear.Howshekeepshealthyisasecret.结论3：when,where,why,how是连接副词，在从句中做__________。状语【Attention】1当单个的从句做主语时，谓语用单数。Thathewillpasstheexamiscertain.WhichbookIshallchoosehasn'tbeendecided.Howshekeepshealthyisasecret.2what引导的从句做主语时，谓语的单复数取决它的表语。WhatIwantisthebook.WhatIwantaresomebooks.3it放在句首作形式主语，真正主语则置于句末。①Itiscertainthathewillwinthematch.他一定会赢得这场比赛的。②Itistruethathehasmadeanimportantdiscoveryinchemistry.他确实在化学上做出了一项重大的发现。目标二：TousesubjectclausecorrectlyincontextActivity1:Matchthesentenceparts,andthentranslatethecompletedsentencesintoChinese.Payattentiontohowthesubjectsareintroduceddifferently.1.____remainsanunansweredquestion.2.____isanimportanttopicforustoresearch.3.____isthatthesechemicalsmayevencausecancer.4.____thesevegetablescanevenbeplantedwithoutanysoilthroughthisnewtechnology.5.____isthereasonwhysomepeopleprefertoliveinthecountryratherthaninthecity.AWhatworriesmanypeopleBThatthelifestyleisslowerandhealthierCHowwecanfindasuitablesolutiontoproducesufficientfoodwhilekeepingtheenvironmentsafeDWhenthesewheatfarmerswilljointhispilotexperimentEItamazedallofusthatDCAEB1.这些小麦农户什么时候会加入预试验仍然不得而知。2.如何能够找到一个合适的解决办法，在保证环境安全的同时，

生产足够的粮食，是一个需要我们研究的重要课题。3.令很多人担心的是，这些化学制品甚至可能导致癌症。4.令我们所有人惊讶的是，通过这种新技术，可以无土栽培这

些蔬菜。5.有些人更喜欢住在乡下而非城市的原因是前者生活节奏更慢、

生活方式更健康。Activity2:Readthepassageandunderlineallthesubjectclauses.Theninpairs,discusswhetherthesentenceswithsubjectclausescanbeparaphrased.Grandmahasbeencomplainingaboutthevegetablessoldinthesupermarket,whichhavebeengrownusingchemicalfertilisers.Toher,thattheylookbeautifulontheoutsideisobvious.However,whatsheisunhappyaboutisthelowernutritionalvalueandreducedflavour.Nowthatbothofmygrandparentshaveretiredfromtheirjobsinthecity,howtheyaregoingtospendtheirretirementisanimportantdecisionforthem.Whethertheycanliveahealthylifeisthefirstthingtheyareconsidering.Sotheyhavemadeuptheirmindstomovetothecountryside,wheretheycanliveagreenlife.

Activity3:WhatqualitiesdoyouthinkmakeapersonlikeYuanLongpingsosuccessful?Workingroups.Haveadiscussionandprepareapresentation.Thefollowingpointsandexpressionsmayhelpyou.•his/herdeterminationtotacklethecrisisof...•his/herintenseefforttoovercome...•his/herdreamtodevelop...•his/herloveandcarefor...•he/shesucceededin...•he/shenevergaveup...•he/sheisdevotedto...Whatimpressesmemostisthat...Whatmakeshim/heragreat...isthat...Itisimportantthat...Whether...dependson...That...ishis/hermostimportantquality.Sample:Whatimpresses