Unit 1 Food matters Grammar and usage 课件-高中英语牛津译林版(2020)选择性必修第一册

Grammar&Usage

Grammar&Usage

-ToinfinitivesassubjectsandpredicativesB4U1Class108ChristinaChuStep1ReadandfillStep1ReadandfillInthepast,theauthorlikedtoeat___________.The

authorwas______totrynewrestaurants.Toeatoutwasalso_____________toenhancetherelationshipwithfriends.Thentheauthorcameacross___________.Therearealotof________tochoosefrom.Itoffers__________________foruserstofollowstepbystep.Inthelastfewweek,theauthorengagedinhomecooking.Cookingathomeis_____.Theauthorcancookexactly_____hewants.Cookingathomeis______.atarestaurantacookingappeagerasocialactivityrecipesdetailedinstructionscheaperwhathealthierreasonsfunctionsbenefitsStep1ReadandfillStep1ReadandfillInthepast,theauthorlikedtoeat___________.The

authorwas______totrynewrestaurants.Toeatoutwasalso_____________toenhancetherelationshipwithfriends.Thentheauthorcameacross___________.Therearealotof________tochoosefrom.Itoffers__________________foruserstofollowstepbystep.Inthelastfewweek,theauthorengagedinhomecooking.Cookingathomeis_____.Theauthorcancookexactly_____hewants.Cookingathomeis______.atarestaurantacookingappeagerasocialactivityrecipesdetailedinstructionscheaperwhathealthierreasonsfunctionsbenefitsQ1：Inwhatorderisthetextorganized?A:Itisorganizedintheorderoftime.Q2:Canyoufindmorebenefitsaboutcookingathome？A:InthecontextofCOVID-19pandemic,cookingathomecanbeausefulskill,especiallyforyoungpeoplelivingalone.Q3:Doyouknowotherwaystoaccessrecipesonline?A:Cookingchannelsonvideowebsites.Step2ReadandlearnStep2ReadandlearnToinfinitivesassubjectsToinfinitivesaspredicativeitbeStep2ReadandlearnStep2Readandlearn①②③Q：Whatarethefunctionsofthethreeto-infinitives?A:①objectcomplement②attributives③adverbialsofpurposeStep3ConclusionStep3ConclusionStep3ConclusionStep3ConclusionHelpingkidsto

surftheInternetwithoutbeingcheatedbyevilfraudsonlineismyduty.Itisnogood/usedoingsth.Itis(agreat)fundoingsth.Itisawasteoftimedoingsth.Step3ConclusionStep3Conclusion如果主语用了不定式,表/宾语也要用不定式;主语用了动名词,表/宾语也要用动名词，如:Toseeistobelieve.=Seeingisbelieving.Itisbettertostayhomethan___（go）out.不定式做主语常表示具体的某一动作;表示泛指或一般的抽象的概念时，多用动名词，如:_____(read)isanidealwaytoacquireknowledgeandbroadenourhorizons._____(read)thebookagainisnecessary.不定式可以和when,where,how,what,whether等连用,在句子中做主语、宾语和表语，而动名词则不能，如:Howtosolvetheproblemisahotpotato.Wheretoputtheboxseemshardtodecide.Whethertodoithasn’tbeendecided.Whattodonextisuptoyou.it作形式主语时，还常用于Ittakessb.sometime/moneytodosth.这一句型中，如：Ittookmemorethananhourtodomyhomeworkyesterdayevening.昨天晚上我做作业用了一个多小时。togoReadingToreadStep3ConclusionStep3ConclusionStep3ConclusionStep3Conclusion（2）动词不定式作表语时，可表示目的。Thenextstepistomakesurethatyouknowexactlywhatisrequired.Thepurposeofeducationis________________afinepersonalityinchildren.教育的目的是发展儿童良好的个性。（3）动词不定式作表语时，可表示事态发展的结果、预期的结果或不幸的命运。Hewastoperishinashipwreckandtoleaveawifeandtwochildren.Youmustspeakout,ifweare________________friends.如果我们还想继续做朋友的话，你就必须痛痛快快地把话都说出来。Step3ConclusionStep3Conclusion（4）动词不定式作表语且用于第一人称的疑问句时，可表示征求意见。WhatamItosayiftheyaskmethequestion?WhatamI________________ifIhavenomoney?如果没有钱，我该怎么办呢？（5）作表语的动词不定式用于被动语态时，相当于can/could,should,oughtto,must，具有情态意义。Youaretoberewarded.你应该受到奖励。(相当于shouldbe)It'snowheretobefound.哪儿也找不到它。(相当于can'tbe)Thesebooks________________________________________.这些书不应该卖掉。（7）动词不定式作表语时，可用于表示“同意、安排、命令、决定、劝告、意愿、禁止”等。Theyaretomarrynextweek.他们将在下周结婚。(表示“安排”)Childrenarenottosmoke.儿童不准吸烟。(表示“禁止”)Youmustbepatientandpersistentifyouare________________.想要成功，你就必须有耐心，有毅力。（8）动词不定式作表语时，可用主动形式表示被动意义。Sheistoblame.她应该受到责备。还有许多事要做。Agreatdealisyet________________.Step3ConclusionStep3ConclusionStep3ConclusionStep3ConclusionStep3ConclusionStep3ConclusionStep4UtilizationStep4UtilizationLocatedtoseetoturntositpaintedrangingtobetoinvitewin/loseabet;have/putabetonsthOne’sbetisthat……