Unit(1)FoodMattersGrammarandUsageI课件高中英语牛津译林版（2020）选择性

B4U1FoodMatters

Grammar:

Toinfinitivesassubjectsandpredicatives年级：高二年级学科：英语（译林版）年级：高二年级学科：英语（译林版）主讲人：刘献平学校：涟源一中B4U1Grammar&Usage(I)To-infinitivesassubjectsandpredicativesReadtheblogentryonpage6andfillinthefollowingmindmap.Inthepast,theauthorlikedtoeat(1).Thentheauthorcameacrossacookingapplastmonth.Theauthorwaseagertotrynewrestaurants.Toeatoutwasalsoasocialactivity(2)_______________________________

withfriends.ReasonsatarestauranttoenhancetherelationshipApp’sfunctionsThereareavarietyof

(3)

tochoosefrom.Itoffers(4)

foruserstofollowstepbystep.recipesdetailedinstructionsReadtheblogentryonpage6andfillinthefollowingmindmap.Inthelastfewweeks,theauthorhasbeenengagedinhomecooking.Cookingathomeis(5)

1

Cookingathomeis(6)

1

BenefitshealthierTheauthorcancookexactlywhathewants.cheaper

Belowisablogentryabouteatingoutandeatingathome.Findthesentencesthatuseto-infinitives

assubjectsorpredicatives.To-infinitivesassubjectsToeatoutwasalsoasocialactivity,...To-infinitivesaspredicatives...,myfirstthoughtatmealtimeswastoeatatarestaurant.Myplanistoinvitemyfriendsoverattheweekend......,itwasnotthatdifficulttomakeasimpleandtastydish.WorkingouttherulesWhentheto-infinitiveisusedasasubject,weusuallyusethepreparatorysubject(1)_____

atthebeginningofthesentence.Theto-infinitivecanalsobeusedasapredicative.Itusuallycomesaftertheverb(2)

.itbeIdentifyfunctionsoftheto-infinitiveinthefollowingsentencesfromtheblogentryofPartA.(1)Toeatoutwasalsoasocialactivity,allowingmetoenhance

therelationshipwithmyfriends.(2)Thereareavarietyofrecipesintheapptochoosefrom.(3)Myplanistoinvitemyfriendsoverattheweekendtoshowthemmynew-foundskills.objectcomplementattributiveadverbialofpurposeGothrough“Grammarnotes”onpage94.动词不定式具有名词特征，可充当主语。（做主语时谓语动词用单数形式）Toseeistobelieve.眼见为实。注：单个不定式作主语时，谓语动词用单数形式；两个及以上不定式作主语时，谓语动词用复数形式；但作为一个整体时，谓语动词用单数形式。到哪里去度假以及何时去度假还没有决定。Wheretogoonaholidayandwhentogofortheholiday

(decide).到哪里去，何时去度假还没有决定。Whereandwhentogoonaholiday____________________(decide).Tosayisonethingandtodoisanother.

说是一回事，做又是另一回事。havenotbeendecidedhasnotbeendecided动词不定式作主语动词不定式句子做主语时可以用形式主语it代替，将不定式置于句末，平衡句子结构。Itis

a

shame

to

litter.乱扔垃圾可耻Itisaprivilegetomeetyou.认识你很荣幸it作为形式主语时，常见句型。It+be+adj.

+(forsb)todosth(adj修饰物）It+be+adj.+(ofsb)todosth(adj修饰人）It+be+n.+todosthIttakes/took/willtakesbsometime/moneytodosth动词不定式作主语动词不定式做主语时,若其后面需要用动词作表语，则作表语的动词也最好使用不定式形式，保持形式一致(todoistodo)Tosavemeistosaveyourself.救我也是救你自己。动词不定式做句子的主语时,会有时态、语态的变化。Itis

a

great

honor

formetobeinvitedheretoday.今天我很荣幸被邀请到这里。Her

birthdaypartyistobeheldnextFriday.她的生日将于下周五举行。动词不定式作主语1.动词不定式做表语直接用在系动词之后，起解释说明的作用，其主语通常是aim,ambition,dream,duty,goal,idea,intension,plan,purpose,task,way,wish等表示意向、打算、计划的词。Her

wish

is

to

be

a

teacher.她的愿望是当一名教师。2.动词不定式做表语用在seem,appear,remain,prove,turnout

等之后：Severalproblemsremaintobesettled.有几个问题有待解决。Thedutyofsoldiersistodefendtheircountry.军人的职责是保卫祖国。动词不定式作表语3.用于表达想法、约定、义务、命令、可能性、命运等。如：We

are

to

meet

at

the

station

then.(表约定）Howarewetoconvincehim?（表可能性）YouaretocomewhenIcall.（表命令）Thequestionishowtocarryouttheplan.问题是如何实施这项计划。4.“疑问词+不定式”也可以用作表语动词不定式作表语B2Completethe

articlewiththecorrectformsoftheverbsinthebrackets.Locatedtoturntositpaintedrangingto

invitetobetoseeB3ImagineyourfriendhastakenyououttodinneratSkyBuffet.Writeathank-younotetoyourfriend,offeringtoreturnthefavourbyinvitinghimorhertoyourhomefordinnernextweekend.Remembertouseto-infinitives.Usetheexpressionsbelowtohelpyou.ExpressionsIamwritingto…Ihavealwayswantedto…Itwassokindofyouto…Iwouldlike/loveto…Itwaswonderfulto… Myplanisto…DearTom,IamwritingtothankyoufortakingmetoSkyBuffet.Itwassokindofyoutoinvitemeandbookatablebythewindow.Itwaswonderfultoseethecitysceneryandwatchthebeautifulsunset.IhavealwayswantedtogiveSkyBuffetatry,anditcertainlyliveduptomyexpectations!Doyouhaveanyarrangementsnextweekend?MyplanistoinviteyouovertomyhomefordinnernextSaturday.Theviewwon’tbeasgoodasatSkyBuffetbutIwouldliketocookyousomethingspecialtothankyou.